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STH ServeTheHome Advertisement [INS::INS] STH STH * Forums * AI * Server + Server Systems + Server CPUs + Accelerators + Server Motherboards + Server Chassis + Other Components * 5G Edge * Storage * Networking * Workstation + Workstation Processors + Workstation Motherboards * Software + Operating Systems + Server Applications + Virtualization * Guides + Buyer's Guides + Tips + Top Hardware Components for FreeNAS NAS Servers + Top Hardware Components for pfSense Appliances + Top Hardware Components for napp-it and Solarish NAS Servers + Top Picks for Windows Server 2016 Essentials Hardware + The DIY WordPress Hosting Server Hardware Guide [ ][Search] Home Server Other Components PCI-SIG Releases 256GBps PCIe 6.0 x16 Spec * Server * Other Components PCI-SIG Releases 256GBps PCIe 6.0 x16 Spec By Cliff Robinson - January 11, 2022 2 Facebook Twitter Pinterest Linkedin Email Print PCI SIG PCIe Releases And Growth PCI X To PCIe 6.0PCI SIG PCIe Releases And Growth PCI X To PCIe 6.0 Today we have the next generation of PCIe, PCIe Gen6 or PCIe 6.0. This new generation will be able to handle 64GT/s which means 256GB/s on a PCIe Gen6 x16 link, double that of PCIe Gen5, or quadruple what today's PCIe Gen4 servers can achieve. PCI-SIG Releases 256GBps PCIe 6.0 x16 Spec One of the big drivers for PCIe 6.0 the PCI-SIG says is SSDs. This is actually a really interesting chart. Cloud is expected to grow, as will client SSDs and that is likely the point of the chart. The bigger insight is that enterprise NVMe SSDs are a very small portion of the current and projected market. While cloud providers have largely swapped to NVMe, many enterprise vendors are still on SAS SSDs. PCI SIG Forward Insights SSD Forecast August 2021PCI SIG Forward Insights SSD Forecast August 2021 The big story here though is really the cadence. PCIe Gen3 to Gen4 was a very long cadence. After Gen4, the speed at which we are getting new standards is increasing rapidly. PCI SIG PCIe Releases And Growth PCI X To PCIe 6.0PCI SIG PCIe Releases And Growth PCI X To PCIe 6.0 2022 will be the year where we see broad platform support for PCIe Gen5 so the next-generation Gen6 will not be in 2022. Still, having the standard with new Flits (fixed size flow control units) for lightweight FEC, PAM4 signaling, and more is a big deal. This means that the ecosystem can start building and validating designs to the new standard. Final Words PCIe Gen6 is important beyond just having a faster pipeline for a SSD. Recall that Compute Express Link or CXL sits atop PCIe Gen5. While we may not necessarily see the need for 800GbE or dual 400GbE adapters right away, the new PCIe standard also means that CXL can potentially build its specification atop the faster Gen6 architecture and get more speed for next-generation servers. The implications of a new Gen6 architecture extend across the domains of storage, networking/ interconnects, accelerators, CPUs, and even to the possibilities for next-generation cache-coherent fabrics. Thank goodness we are in a period of rapid innovation instead of the slow pace in the PCIe Gen3 era. If you want to learn more, check out the specification page here. [INS::INS] * TAGS * PCIe * PCIe 6.0 * PCIe Gen6 Previous articleSecure Your QNAP NAS Immediately From Latest Wave of Attacks Cliff Robinson They call me "the STH news guy" for a reason. RELATED ARTICLESMORE FROM AUTHOR Stephen Van Doren CXL Interconnect Cover Other Components New CXL Details at Intel Interconnect Day 2019 One Stop Systems - Avago PCIe switch board for AIC SSDs Other Components PCI-SIG Releases PCIe 4.0 Version 1.0 2 COMMENTS 1. Jay Kastner January 11, 2022 At 10:48 am To satisfy the Gen6 bus speeds you will need DDR5-5000 in 8 channels, so this will be expensive and for Xeon servers for a while 2. creker January 11, 2022 At 12:14 pm "If you want to learn more, check out the specification page here" Funny. I want to learn more but I can't. PCIe specification is available only for PCI-SIG members or you can buy it for 4500$ which is insane. Many other major specifications like CXL and nvme are available to anyone for free, like it should be. LEAVE A REPLY Cancel reply [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] Please enter your comment! [ ] Please enter your name here [ ] You have entered an incorrect email address! Please enter your email address here [ ] [ ]Save my name, email, and website in this browser for the next time I comment. [ ] [ ]Sign me up for the STH newsletter! [Post Comment] [ ] [ ] [ ] [ ] [ ] [ ] [ ] D[ ] This site uses Akismet to reduce spam. Learn how your comment data is processed. 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