Olikan
Platinum Member
- Sep 23, 2011
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AMD verbiage particularly Forst Norrods has been the exact opposite. Zen2 was a more "minor"update and Zen3 is a bigger update. I dont trust any of the rumors but what we have so far is:
8 Core CCX ( amd presentation)
big (50%) L1 bandwidth increase (rumor)
4x 256 FMA (rumor)
big FPU performance incerease (rumor)
3d stacking of SRAM ( few rumors , new patients)
We haven't heard any rumors on the front-end/INT core but even if you just assume only evolutionary changes, that still better /bigger branch/fetch/predict/retire/PRF etc .
assuming all are true holistically that a very big uplift in the Core to memory sub system/a cache design. The requirements of the IF/cache coherency will change massively if AMD stack stacking 100's/1000's of MB of SRAM on each CCD.
Also this, on linux zen3 patch: "Future SMCA systems may see a new version of the Load Store unit bank type as indicated by its McaType value."
[PATCH 0/5] MCA and EDAC updates for AMD Family 19h
lore.kernel.org