Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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SpudLobby

Senior member
May 18, 2022
961
655
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Full disclosure I think AMD in server is generally fine and am not sure why people think otherwise. Hope they do well. There’s no competition in merchant.

But client? Oh buddy the next 5 years are going to be fun. They’re just lucky they can still climb some (Intel in even worse position obvs).

I mean, an X5 still has like a 30-33% IPC lead in GB6 lmao. MediaTek could ship that bad boy at 3.8GHz and be totally fine. And honestly it is “good enough” even if Zen 5 were a 25% IPC gain, because AMD has other… issues related to power. (Btw, even Cortex X4 was doing 1690 GB5 at 5.5-6W on N4P total and near A14 IPC, which is behind Apple but I’d take that over Phoenix!)

Some here confuse “Armlets were hyperbolic about the pace of change” with “AMD INTEL ON TOP FOREVER” even though most signs in the last 4 years point to very meh results coming out of Team Red and Blue for anyone that isn’t a desktop gamer.
 

reaperrr3

Junior Member
May 31, 2024
5
11
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No, not that.
At 16% PPC they're physically not getting that 128c socket score.
96c you can game with magical v/f curves being magically way better, but not 33% more cores ISO-ish node.

AMD hasn't lied or missed a single DC part in Zen history so this would be a first.
Everything since Rome was exactly as promised.
Is it possible IPC only goes up significantly in very int-heavy workloads and everything more mixed or fp-heavy is much less (outside of AVX512)?
Not sure how consumer workloads compare to server applications in terms of int/fp mix.

I mean, from what I know, apart from the 16KB bigger L1D, cache sizes stay flat and the number of FP pipes also stays flat, so I'd assume anything cache-/bandwidth- or FP-bound won't scale so well, even with bigger ROB and so on.
 

adroc_thurston

Diamond Member
Jul 2, 2023
3,314
4,782
96
Is it possible IPC only goes up significantly in very int-heavy workloads and everything more mixed or fp-heavy is much less (outside of AVX512)?
Someone said yes but I have to see it first.
so I'd assume anything cache-/bandwidth- or FP-bound won't scale so well, even with bigger ROB and so on.
L1/L2 b/w is actually wayyy up so there's that.
 
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