Post B4cBDvOJNGJ6roc3m4 by q66@gts.q66.moe
 (DIR) More posts by q66@gts.q66.moe
 (DIR) Post #B4c0yWhfsgyaPjgl3g by q66@gts.q66.moe
       7 likes, 4 repeats
       
       oh, found a cute thing while cleaning up for movingit's cpu silicon, from ibm power9 :neocat_cute:​i got it when i crashed an ibm conference in france some years back, they were giving them out as souvenirs
       
 (DIR) Post #B4c11nerIiLJrmvsLw by lanodan@queer.hacktivis.me
       1 likes, 0 repeats
       
       @q66 I guess it's from a failed batch? Or like IBM is that made out of money.
       
 (DIR) Post #B4c16jFx5sEvf9dJ0y by q66@gts.q66.moe
       1 likes, 0 repeats
       
       @lanodan no idea, i would assume soeveryone got one
       
 (DIR) Post #B4c5NuA4CZUEDwKFvM by fiore@brain.worm.pink
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       @q66 holy  beautiful
       
 (DIR) Post #B4c6T3fYNZFr784gTI by djsumdog@djsumdog.com
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       So like the cut silicon before lithography? That is a cool conference swag idea; good way to use a defective wafer sheet.
       
 (DIR) Post #B4c81Wisxqj31SdIXI by q66@gts.q66.moe
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       @djsumdog afaict this is after lithography? the patterns are there
       
 (DIR) Post #B4c81WrkQtoZSwmNLk by djsumdog@djsumdog.com
       0 likes, 0 repeats
       
       hmm, true. Might failed QC later in the process. POWER is an interesting architecture.Is the other side just an IBM conference logo?
       
 (DIR) Post #B4c8HOrPxqE5GsC0Rs by q66@gts.q66.moe
       1 likes, 0 repeats
       
       @djsumdog the other side is just plain (iirc? that's what i remember, i haven't taken it out of the plastic frame this time), there is nothing on it
       
 (DIR) Post #B4cAcBVqzBx9ra92em by acsawdey@fosstodon.org
       1 likes, 0 repeats
       
       @lanodan @q66 assuredly it’s a failed one, there are usually quite a few with any chip this size. It’s not usually that entire wafers don’t work, more like there are defects sprinkled across the wafer and some can’t be corrected either the redundancy in the design leading to some chips being unusable.I’m jealous, I worked on POWER9 and I don’t have one of these.
       
 (DIR) Post #B4cBDvOJNGJ6roc3m4 by q66@gts.q66.moe
       1 likes, 0 repeats
       
       @acsawdey @lanodan yeah what can the yield be for this kind of complex chip and process, 90%? and power9 had a lot of different core count configurations to take care of defective cores, but i guess even then...