[HN Gopher] AMD Ryzen 9 7900X / Ryzen 9 7950X Benchmarks Show Im...
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       AMD Ryzen 9 7900X / Ryzen 9 7950X Benchmarks Show Impressive Linux
       Performance
        
       Author : nicolaslem
       Score  : 134 points
       Date   : 2022-09-26 13:39 UTC (9 hours ago)
        
 (HTM) web link (www.phoronix.com)
 (TXT) w3m dump (www.phoronix.com)
        
       | INTPenis wrote:
       | I'm a life long Linux user, it's not even a thing for me it's
       | just what I've used since my teens. But phoronix saying something
       | has good benchmarks in Linux means absolutely squat to me. That
       | site _always_ has good performance metrics on Linux.
       | 
       | I do some gaming and I can tell you their posts never reflect my
       | reality.
        
         | m463 wrote:
         | Isn't this so you as a linux user can decide if purchasing a
         | specific cpu will make a difference?
        
       | djha-skin wrote:
       | Fun seeing performance reviews of new chips coming out. It's a
       | sign to me that the market is recovering after the pandemic.
       | Imagine someone promoting a chip during the pandemic, when you
       | couldn't get them for love or money.
       | 
       | Still, I would have liked to see a graph or other pretty chart
       | showing the results of the benchmark off better so that I could
       | internalize them easier.
        
         | Bilal_io wrote:
         | The embargo is going to be lifted later today on reviewers
        
         | pedrocr wrote:
         | These reviews came out normally during the pandemic. Here's the
         | same review for the previous generation, released in November
         | 2020:
         | 
         | https://www.phoronix.com/review/ryzen-5900x-5950x
        
       | est wrote:
       | Still waiting for the rumored 6700G with 12 RDNA2 CUs.
        
       | hassanahmad wrote:
       | 95c and that power draw are a skip 7000 series for me. I think a
       | used 5950x will be the sweet spot soon.
        
         | bearjaws wrote:
         | Ryzen scales up exponentially in power draw as you try to hit
         | peak frequency numbers.
         | 
         | You can run it at 95% speed and usually something like 70%
         | voltage.
         | 
         | My 3900x can do around 4.5ghz at 1.4v or 4.3ghz at 1.05v all
         | core. I imagine Zen 4 will be exactly the same. Don't have the
         | power draw off the top of my head, but that is essentially 125w
         | for 4.5ghz and 90w for 4.3ghz.
        
           | blibble wrote:
           | for FETs the power draw on voltage is quadratic (not
           | exponential)
        
         | mhh__ wrote:
         | It's not going to get any better, you can thermal throttle it
         | if needs be.
        
         | bryanlarsen wrote:
         | According to other reviews, the 7000 series destroys the
         | competition (both Intel and 5000 series) at 65W.
         | 
         | Also, 7000 series is designed for 95C. It'll run forever at
         | 95C, and will always run at 95C if it has the workload and
         | power budget. IOW, giving it more cooling will cause it to run
         | faster rather than making it cooler.
         | 
         | On other chips 95C might indicate it's on the edge of failure,
         | but AMD asserts that 95C won't shorten the 7000's life.
        
       | dis-sys wrote:
       | based on what I heard from insiders, two batches of reviews for
       | AMD's new chips, those released now are the ones from sites
       | traditionally happy to provide overwhelmingly positive reviews,
       | those going to be released tomorrow are the ones which usually
       | provide more balanced reviews.
       | 
       | good PR tricks - they just sign NDA agreements with different
       | reviewers with slightly different embargo lift dates.
        
         | Teifion wrote:
         | Can you suggest some of these less positive reviewers please? I
         | like to have a broad range of reviews before deciding and all
         | the ones I normally look at came out today (though were not
         | overwhelmingly positive in every area).
        
           | dis-sys wrote:
           | No, I don't have such list.
           | 
           | The source of the claim is from here (in Chinese) -
           | 
           | https://www.chiphell.com/thread-2445527-1-4.html
           | 
           | chiphell is the largest computer parts review site in China,
           | and that nApoleon guy posting this two batches of review
           | story is the owner of the site.
           | 
           | In a more recent thread, he confirmed again that his site has
           | completed their own review and he had read it, yet they are
           | not allowed to post it until tomorrow.
           | 
           | https://www.chiphell.com/thread-2446331-1-1.html
           | 
           | In a separate thread he posted today, he mentioned that based
           | on their tests, the temp of the zen4 chip is always 95
           | degrees celsius - no matter whether you use a shitty cheap
           | cooler or a fancy kick ass one.
           | 
           | https://www.chiphell.com/thread-2446302-1-1.html
        
             | sliken wrote:
             | Not sure why the 95C thing is bad. If a chip has work to do
             | and can control it's overclocking, why not have it stick to
             | whatever safe temperature it wants?
        
             | rjsw wrote:
             | Would be interesting to know if benchmarks run faster with
             | a better cooler. It could be at the thermal limit in both
             | cases, just at different clock speeds.
        
               | wmf wrote:
               | It will run faster with more cooling. We'll probably see
               | some air vs. water benchmarks in the coming weeks.
        
             | fomine3 wrote:
             | Interesting but is delaying negative reviews works? It
             | seems that GN posts review with temperature criticism today
             | (see also thumbnail).
             | https://www.youtube.com/watch?v=nRaJXZMOMPU
        
         | halotrope wrote:
         | What are you talking about? E.g Anandtech and GamersNexus
         | (https://www.youtube.com/watch?v=nRaJXZMOMPU) are hardly
         | examples of being "overwhelmingly positive" towards anyone.
        
         | Tepix wrote:
         | Heise Online has released their review (alas, behind a paywall)
         | and it starts very positive. I'm pretty sure they are the most
         | trusted reviewers in the german language.
        
         | pedrocr wrote:
         | The Anandtech review is also out. I had them as pretty balanced
         | at least in the past.
        
           | dis-sys wrote:
           | surely Anandtech is in a different category - why would the
           | PR dept of AMD or Intel mess with Anandtech.
           | 
           | sadly, the same can't be said for hundreds/thousands other
           | much smaller reviewers.
        
             | hipnoizz wrote:
             | As this specific review is from Phoronix - do you have some
             | proof that their reviews are (heavily) biased? I'm looking
             | at reviews in more details only when I want to buy
             | something, other than that I skip them or just have a quick
             | look. I haven't did any serious comparison either, but I
             | remember Michael Larabel from Phoronix criticising various
             | parties. Many of his reviews are basically
             | measures/benchmarks with some summary on top of that - his
             | benchmarking methodology may be or may be not flawed, I
             | don't remember him shilling for AMD. AMD has probably some
             | goodwill from the Linux community since they open source or
             | provide various specs for their graphics card. At least
             | that used to be the case.
        
               | dis-sys wrote:
               | I was just passing on something claimed by the largest
               | computer parts review site in China. They claimed that
               | their site has been required not to release their review
               | until tomorrow, the owner of the site further claimed
               | that there are two batches of reviews and his site is in
               | the second batch for obvious reasons.
               | 
               | See the url in my replies.
        
               | michaellarabel wrote:
               | FWIW, at the AMD event in Texas last month where the
               | Ryzen 7000 series was announced, everyone was given the
               | same embargo date... Mostly all the US and EU reviewers
               | there.
               | 
               | Maybe the China/Asia review briefings or so are going
               | with a different date based on different retail
               | availability or so? Hadn't heard of some reviewers
               | getting a different embargo date, typically see that
               | usually only for different geo availability or if getting
               | a sample from a motherboard OEM / other partner and not
               | the CPU company review embargo.
        
               | yxhuvud wrote:
               | Could also be a TZ issue, where they have a clock time,
               | and that clock time ends up ending up at different dates
               | in practice.
        
           | MikusR wrote:
           | Their Desktop and Mobile CPU reviewers both quit.
        
         | saiya-jin wrote:
         | Everybody is doing dirty PR tricks these days, cash flow is
         | above morals for a long time. People overall don't mind so
         | don't expect change for the better.
         | 
         | Anyway, enough ranting, nobody sane decides on these 0day
         | benchmarks but waits at least few weeks for overall
         | conclusions, quirks, not so common issues etc. And even better
         | is to wait few months for more stable motherboards and drivers,
         | better availability of compatible RAM etc.
        
       | Tepix wrote:
       | Can't wait for the 65W, 45W and 35W Ryzen 7000 CPUs/APUs. These
       | 100+W CPUs are a step backwards.
        
         | sliken wrote:
         | I was impressed the 7950 did so well at 65 watts, 81% of the
         | perf at 38% of the power. I'd expect the lower end chips with
         | less cores to have even less of a compromise to get to 65
         | watts.
        
         | doikor wrote:
         | You can run it in 65W or 105W Eco mode. It will get the power
         | consumption down a lot. Single thread performance will be the
         | same and in multi thread it will still beat 12900K even in 65W
         | Eco mode.
         | 
         | https://youtu.be/uks4qQ2MXrM?t=1087
         | 
         | https://www.anandtech.com/show/17585/amd-zen-4-ryzen-9-7950x...
        
       | mhh__ wrote:
       | Not as much better than alder lake than I was expecting
        
       | AshamedCaptain wrote:
       | I really wish that someone would review CPUs at similar power
       | levels, rather than TDP when there is a big difference between
       | the two models.
       | 
       | Also, there is no idle power comparison, something that may also
       | differ significantly and affect Linux.
        
         | rndmize wrote:
         | The anandtech review has some of that, they have one chart on
         | the 7950X running in eco mode
         | https://www.anandtech.com/show/17585/amd-zen-4-ryzen-9-7950x...
         | .
        
           | neogodless wrote:
           | Yes scroll down to see the Cinebench R23 results at 65W.
        
         | fomine3 wrote:
         | This is my request for CPU review. It's good way to know core
         | efficiency. TDP or turbo watts is now artificially set very
         | high by manufacturer but not efficient. Maybe reviewers are too
         | busy to take many benchmarks before embargo.
        
         | devwastaken wrote:
         | What would be the purpose? If you want to purposefully limit
         | power you're forcing the chip to underperform. You can just get
         | the lower cost chip that does run at that power. For example
         | the 5600x being 76W versus the higher chips.
        
           | nine_k wrote:
           | (1) Battery life on laptops.
           | 
           | (2) Cooling budget on servers.
           | 
           | Both are very significant limiting factors for non-gaming
           | applications.
           | 
           | Top gaming rigs are the dragsters of computing: no power
           | consumption is too high, no hardware contraption is too
           | large. But most people, and most businesses, don't drive
           | dragsters.
        
           | fomine3 wrote:
           | It's not the same. Many core on lower frequency is efficient
           | than fewer core on high frequency, even if TDP is same.
        
           | AshamedCaptain wrote:
           | As shown in the anandtech review above, the 7950x limited to
           | 65W (ECO Mode) handily beats the 7600x at (uncapped) 105W,
           | and anecdotally everything that Intel has to offer as of
           | today...
           | 
           | https://www.anandtech.com/show/17585/amd-
           | zen-4-ryzen-9-7950x...
        
           | pizza234 wrote:
           | > What would be the purpose? If you want to purposefully
           | limit power you're forcing the chip to underperform
           | 
           | The rationale is that each architecture has a sweet spot
           | consumption/performance, and increasing performance over a
           | certain threshold has increasing costs (AFAIK, one
           | significant factor is the increase of voltage in order to
           | push frequencies higher).
           | 
           | I don't know the numbers, but AMD has been offering the 65W
           | threshold for a while, so it can be reasonably assumed that
           | 65W is the sweet spot performance/consumption.
           | 
           | The reason for not buying directly a cheaper model is the
           | number of cores - one may choose, say, a 65W-throttled CPU
           | with 16 cores over an unthrottled 8-cores (in some scenarios,
           | this can make sense).
        
             | Kerrick wrote:
             | In addition to this, you can choose to run your top-of-the-
             | line multi-core processor in eco mode most of the time, and
             | then consciously turn it back to stock settings when you
             | know you'll need the extra speed/throughput, only bearing
             | the extra heat and cost of that performance when you really
             | need it.
        
           | BaculumMeumEst wrote:
           | i like longer lasting hardware and not having a furnace in my
           | office
        
         | doikor wrote:
         | Gamers nexus kind of does that
         | https://www.youtube.com/watch?v=nRaJXZMOMPU&t=704s
         | 
         | Basically how many watts required to do some fix unit of work
         | (to render 1 frame using Blender CPU rendering)
        
           | Bolkan wrote:
           | Your cpu can simulate the universe at 1W. Although it will
           | take a long time.
        
             | ncmncm wrote:
             | My CPU can't, but it is theoretically possible to make a
             | CPU that could.
        
               | plasticchris wrote:
               | do you mean that a turing machine can't simulate the
               | universe but some other kind of cpu (i.e. quantum) could?
        
               | jhoechtl wrote:
               | This is all very theoretical so ... a turing machine can
               | simulate a universe as it assumes infinite memory
        
           | mastax wrote:
           | That is a useful measurement, but it's not quite what I'd
           | want.
           | 
           | In that test, the CPUs are running on an open-air test bench
           | with a 360mm AIO liquid cooler with the fans running at 100%.
           | I don't think any of us are going to be running the CPUs like
           | that, and that type of cooling encourages the CPUs to draw
           | way more power - because they can draw much more power
           | without overheating.
           | 
           | What I'd want in a test is to take some reasonable cooling
           | solution (reasonable varies from person to person, of course)
           | like a high-quality 140mm tower cooler or a 240mm AIO, in a
           | _computer case_ with the fans running at a silent or slightly
           | above silent level. Then see what type of power and
           | performance you get out of it.
        
         | nwmcsween wrote:
         | I just want a CPU freq to power chart, so I know how Intel/AMD
         | are pushing TDP and at what freq things start getting
         | exponential. It would be interesting to see what is considered
         | "normal".
        
         | arianvanp wrote:
         | But a 7950x is just a 7900x (They have identical silicon) that
         | is just "lucky" enough to survive more power draw. If you make
         | the TDP the same you just end up with the same CPU
        
           | Ygg2 wrote:
           | Pretty sure 7900x has fewer cores/threads.
        
             | ncmncm wrote:
             | Anyway fewer turned on? They need something to sell when
             | one or more of the cores don't work. Would be nice to let
             | you have 15 cores when that many of them work.
        
           | pizza234 wrote:
           | Are you sure? The 7900x has 12 cores, while the 7950x has 16.
        
             | Bolkan wrote:
             | They disable some cores? How else would you explain the
             | lower single core performance?
        
           | Scene_Cast2 wrote:
           | I did read that the silicon that can take higher voltages is
           | worse in lower power (i.e. lower voltage) situations.
        
       | didgetmaster wrote:
       | Does anyone know how to apply to be a 'reviewer' for pre-released
       | CPUs from AMD or Intel? I am building a new kind of data
       | management platform that is highly threaded so it can do DB
       | queries or other data manipulation functions in parallel. I will
       | benchmark it against other common systems like Postgres
       | (https://www.youtube.com/watch?v=OVICKCkWMZE) but I only do that
       | when I upgrade my own personal desktop or laptop. I would love to
       | get my hands on loaner hardware to run benchmarks and publish
       | them.
        
         | pella wrote:
         | You should add your benchmark to the
         | https://openbenchmarking.org/
         | 
         | And then there is a greater chance that phoronix will include
         | it in its tests; or others will run it and publish the results.
        
           | didgetmaster wrote:
           | That would only really work if I already had the hardware for
           | a meaningful benchmark. Right now my desktop has a 5950x and
           | my laptop has a 6700hq. Showing a benchmark between those two
           | systems would not be that interesting. I would like to show
           | how my system performs on a 7950x vs my 5950x but I don't
           | want to go out and buy another $2000+ computer just to get
           | those numbers.
        
             | pella wrote:
             | This is a Clickhouse aggregated benchmarks :
             | https://openbenchmarking.org/test/pts/clickhouse
             | 
             | so everybody can verify and compare the results.
             | 
             | If you create a benchmark; everybody can run .. and you can
             | ask your networks for run this public test and upload the
             | results.
             | 
             | On the other hand you can wait for ZEN4 Epyc ... and rent
             | for 1-2 hour in a cloud.
        
       | nwmcsween wrote:
       | Please give me a Frequency/Power chart so I can tell what if
       | there is any wackiness WRT TDP.
        
       | alkonaut wrote:
       | It's annoying when hardware sites compare new CPUs to a big list
       | of older or less capable ones, but precisely all of them are
       | basically so new that if you have one of them you probably aren't
       | upgrading now. If you have Ryzen 2/3/4 or 9/10th gen Intel you
       | have to guess what kind of performance leap you'd get with this.
        
       | dschuetz wrote:
       | Does the 7000 series have Pluton? Can't find specifics anywhere.
        
         | nicolaslem wrote:
         | I don't know but for what it's worth my main machine is a 6000
         | series laptop (with Pluton) running Linux and I did not have
         | any compatibility issues. Sure, it sucks to have some Microsoft
         | designed hardware in my CPU but at least it not causing issues
         | (for now).
        
           | anonym29 wrote:
           | You have two ring -3 coprocessors with unrestricted DMA,
           | unrestricted disk I/O, and unrestricted access to your
           | network interface. One belongs to the NSA, the other to
           | Microsoft.
           | 
           | Do some traffic analysis on the upstream end of an ethernet
           | cable plugged into that computer while it is hibernating or
           | sleeping some time, you might not like what you what you
           | find.
        
             | gruez wrote:
             | >Do some traffic analysis on the upstream end of an
             | ethernet cable plugged into that computer while it is
             | hibernating or sleeping some time, you might not like what
             | you what you find.
             | 
             | Is this something you know for a fact, or are you
             | extrapolating from intel ME?
        
               | anonym29 wrote:
               | It's behavior I've witnessed on my own system w/ AMD PSP.
               | I can't definitively attribute it to PSP, but I can't
               | attribute it definitively to anything else either.
        
             | YakBizzarro wrote:
             | any reference to that? I would like to read more
        
               | anonym29 wrote:
               | Reference: I've done it on my own system. I'd encourage
               | you to do it on your own system if you're curious.
        
               | bruce343434 wrote:
               | I don't have the hardware for it; what did you find?
        
               | anonym29 wrote:
               | Without divulging too much information about the
               | specifics, a LOT more traffic than I was expecting or
               | willing to tolerate.
        
               | bruce343434 wrote:
               | Such as?
        
             | kyriakos wrote:
             | Is this something that can be blocked at router/firewall
             | level?
        
               | anonym29 wrote:
               | Allowlisting, yes. Keep in mind that even fairly
               | unsophisticated malware has been observed using channels
               | like pastebin and Twitter for exfil/c2.
               | 
               | Blocklisting, that's a cat and mouse game. Go look at how
               | many different URLs and IPs are utilized for commercial
               | telemetry in the likes of Adobe and Microsoft software if
               | you aren't familiar.
        
         | anonym29 wrote:
         | Zen 4 (Raphael) desktop CPUs will have it. Right now, Zen 3
         | (Chagall) and Zen 4 Threadripper (Storm Peak) don't currently
         | have plans for integrating it, but that may be subject to
         | change. I cannot provide proof, but I sure as hell am never
         | buying Zen 4 or later AMD Desktop CPUs ever again for a system
         | that will be connected to the internet.
        
           | dschuetz wrote:
           | I would not go that far saying I won't buy AMD ever again,
           | but if Microsoft has a foot in the door inside my systems in
           | form of creepware like Pluton it is there for keeping the
           | door open.
        
             | anonym29 wrote:
             | I edited to clarify. I would consider using them on a
             | system that never gets connected to the internet.
        
               | adrian_b wrote:
               | I am also paranoiac about such things, but the part with
               | avoiding the connection to the Internet is easy for a
               | desktop computer, if it also does not run Windows, where
               | you never know what services might be active and with
               | which external servers they might try to communicate.
               | 
               | I have a small computer that is used as the router for
               | the Internet connection and on which I have complete
               | control over the firewall and over the proxies used for
               | connecting to the Internet, so there are no chances for
               | an unwanted connection to the Internet.
               | 
               | For additional protection, one could run the Internet
               | browsers in a Virtual Machine, to be absolutely certain
               | that there is no way for a script run by the browser to
               | access the physical hardware, assuming that you do not
               | trust the sandboxing capabilities of the browser.
        
               | anonym29 wrote:
               | VMs are an imperfect solution to preventing programs
               | running in the guest OS from affecting the host OS
               | (imperfect, as VM escapes are a thing).
               | 
               | VMs do not provide protection to the guest OS (or it's
               | processes) from inspection and snooping by the host OS,
               | or from inspection / snooping by the hardware the host OS
               | is running on.
               | 
               | If using a bare metal hypervisor, sed 's/host
               | OS/hypervisor/g'
        
           | gruez wrote:
           | FWIW it's already present on Zen 3+ (Rembrandt) CPUs.
           | However, at least on lenovo you can disable it (there's an
           | option in the BIOS that allows you to toggle between TPM 2.0
           | and pluton).
        
           | nine_k wrote:
           | What remains for a desktop system then? Is Intel in a
           | drastically better shape?
           | 
           | (I know about Talos.)
        
             | anonym29 wrote:
             | No, Intel's 13th generation (Raptor Lake) chips are slated
             | to have it too.
             | 
             | I suspect that like with Threadrippers, some Xeons will not
             | ship with it, but I am not as confident about this as I am
             | for Threadrippers, for reasons I cannot divulge.
        
           | xxpor wrote:
           | Maybe I'm interpreting this comment incorrectly but I'm
           | begging people to realize if they're a normal person and they
           | have the NSA at the top of their threat model they're bad at
           | internalizing relative risk.
        
             | anonym29 wrote:
             | You do appear to be interpreting it incorrectly. This is
             | about Pluton, for which the threat actor is Microsoft.
             | People concerned about the NSA would need to be worried
             | going all the way back to the introduction of AMD PSP back
             | in 2011.
             | 
             | Now, with regards to the important part of your message,
             | I'm begging people to realize that if they're blindly
             | trusting all code running on all firmware in their personal
             | machine, they are even worse at accurately internalizing
             | risk than those who are proactively paranoid.
        
               | xxpor wrote:
               | I would argue not trusting MS is even sillier. Like it or
               | not, they run most desktops around the world. Even if you
               | only run the purest NetBSD at home, nearly everything
               | someone knows about you will touch Windows at some point.
               | In terms of secureboot et al, MS hasn't done any of the
               | shenanigans people were worried about. You can still turn
               | off SB on every x86 desktop. What is the actual risk
               | here? At the end of the day, MS isn't the government.
               | 
               | Raptor Systems is right there for the truly paranoid.
        
       | cesarb wrote:
       | I recall that back in the 90s, besides higher clock speeds, one
       | of the greatest reasons for excitement about a new CPU was
       | instruction set extensions (MMX, 3DNow, etc), which could give
       | outsized performance gains when software was updated to work with
       | them. This latest release from AMD has similar cause for
       | excitement: AVX-512 is more than just larger vectors, it also
       | doubles the number of registers, adds per-lane mask registers,
       | and other enhancements; unlike with Intel processors, there
       | should be no worry of slowing down the clock for the whole
       | processor when using these instructions with larger vectors, and
       | unlike with Intel, we can reasonably expect that every AMD
       | processor from now on will always have these instructions
       | enabled.
        
         | fomine3 wrote:
         | > unlike with Intel processors, there should be no worry of
         | slowing down the clock for the whole processor when using these
         | instructions with larger vectors
         | 
         | because they don't implement "true" 512bit registers for
         | AVX-512. This is basically to support instruction set rather
         | than SIMD performance boost.
        
           | adrian_b wrote:
           | Actually, Zen 4 implements true 512-bit registers.
           | 
           | See the other thread on HN, which points to
           | https://www.mersenneforum.org/showthread.php?p=614191
           | 
           | It appears that Zen 4 implements around 192 registers of 512
           | bits. However, the latest Intel model (Sapphire Rapids)
           | implements more 512-bit registers, around 332 such registers.
           | 
           | For most operations, Zen 4 has the same execution units as
           | Zen 3, it has not expanded them to 512 bits, but the
           | execution units of Zen 3 are enough to match the 512-bit
           | throughput of the Intel CPUs. The only exception is that Zen
           | 4 can do one 512-bit FMA and one 512-bit FADD per cycle,
           | while the most expensive of the server and workstation Intel
           | CPUs have a second 512-bit FMA unit, so they can do 1 FMA + 1
           | FMA, instead of 1 FMA + 1 FADD. The cheaper Intel CPUs with
           | AVX-512 are worse than Zen 4, because they can do only 1 FMA,
           | not also an FADD, like Zen 4.
           | 
           | On the other hand Zen 4 implements a true 512-bit shuffle
           | unit, while the current Intel CPUs have only 256-bit shuffle
           | units, slowing down the shuffles that must cross the register
           | halves.
           | 
           | As tested at that link, while there are a few cases when Zen
           | 4 has slower implementations for some 512-bit instructions,
           | in many cases the AVX-512 implementation in Zen 4 is better
           | than in the current Intel CPUs.
        
           | doikor wrote:
           | They do still get around 60% speedup up according to phoronix
           | https://www.phoronix.com/review/amd-zen4-avx512/6
           | 
           | > On average for the tested AVX-512 workloads, making use of
           | the AVX-512 instructions led to around 59% higher performance
           | compared to when artificially limiting the Ryzen 9 7950X to
           | AVX2 / no-AVX512.
        
             | fomine3 wrote:
             | Wow it looks great than expected.
        
         | Scene_Cast2 wrote:
         | I'm personally curious about AVX512 support in pyTorch and
         | numpy. Numpy depends on BLAS libraries for performance, and I
         | don't know how much dev resources are behind openBLAS (i.e. how
         | soon I can expect performance increases), especially given that
         | AMD is a much smaller company and doesn't spend as much as
         | Intel on software.
        
           | timeu wrote:
           | Interestingly even software (oneDNN) that is using Intel's
           | brand new OneAPI is running excellent one Zen 4 CPUs, often
           | faster than on Intel's own CPUs:
           | 
           | https://www.phoronix.com/review/amd-
           | ryzen-7900x-7950x-linux/...
        
           | michaellarabel wrote:
           | Many AVX-512 Zen 4 benchmarks here -
           | https://www.phoronix.com/review/amd-zen4-avx512
        
         | devwastaken wrote:
         | Cache sizes are also significant in these gens. The 5800x3D
         | outperforms the 12900KS in many games. They just stuck a bunch
         | of cache onto the 5800.
        
           | AshamedCaptain wrote:
           | There was an article about the positive impact large
           | integrated caches had back when Intel was doing it:
           | https://www.anandtech.com/show/16195/a-broadwell-
           | retrospecti...
           | 
           | I'm surprised Intel has basically abandoned the idea, and AMD
           | just markets it for "gaming".
        
           | didgetmaster wrote:
           | Any rumors that any of the Zen4 chips will get a 3D cache
           | version?
        
             | cestith wrote:
             | There are those rumors. In fact, there's no announced 7800X
             | yet. The speculation is they launch a 7800X3D a few weeks
             | to a few months from now with 3D cache from the beginning
             | in that 7800 name space. To me that seems likely. There's a
             | rather more optimistic rumor that all the 7000 series will
             | eventually have 3D cache versions, which I find maybe too
             | optimistic.
        
             | ac29 wrote:
             | No need for rumours, AMD already said they will be bringing
             | out 7000 series chips with V-cache. This was during a
             | investor presentation, the specific products haven't been
             | announced yet.
        
             | beebeepka wrote:
             | Unspecified 3d cache models have been confirmed. Coming end
             | of this year, Q1 2023 at the latest.
             | 
             | Checking out the numbers for these non-3d models, the large
             | cache SKUs are going to be pretty amazing. Likely expensive
             | too
        
               | doikor wrote:
               | > Unspecified 3d cache models have been confirmed. Coming
               | end of this year, Q1 2023 at the latest.
               | 
               | Most speculation/leaks point to CES (early January) would
               | be the announcement so not this year.
        
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