Question Zen 6 Speculation Thread

[Goop_reformed]

1.27x perf/core * 1.33x more cores = 1.7x perf gain?

IPC uplift seems to be around in the low teens

 

[CouncilorIrissa]

Oh god, we're going to enjoy so many extrapolations from that slide. Jfc.

 

[511]

I would guess 1.7X is Spec Int so roughly ~2550-2600. Also from N4P -> N2p IS ~27% PPW improvements. As Adroc pointed out it is N3E for 9965 N3E -> N2P SO APPROX 1.18% FROM NODE.

CPU2017 Integer Rate Result: Lenovo Global Technology ThinkSystem SD535 V3 (2.25 GHz, AMD EPYC 9965)

CINT2017 result for ThinkSystem SD535 V3 (2.25 GHz, AMD EPYC 9965); SPECrate2017_int_base: 1510; SPECrate2017_int_peak: 1570

spec.org

CPU2017 Integer Speed Result: ASUSTeK Computer Inc. ASUS RS720A-E13-RS8U (2.25 GHz, AMD EPYC 9965)

CINT2017 result for ASUS RS720A-E13-RS8U (2.25 GHz, AMD EPYC 9965); SPECspeed2017_int_base: 16.6; SPECspeed2017_int_peak: 16.8

www.spec.org

I am surprised Zen 7 is 2027 has to be N2P

 

[adroc_thurston]

Also from N4P -> N2p IS ~27% PPW improvements.

Turin-D is N3e.
Generously it's like 15% speed and the rest is IPC.

 

[511]

Turin-D is N3e.
Generously it's like 15% speed and the rest is IPC.

which is a big part of 1.7 1.33X from cores 1.15 from node and 1.12 from cores

 

[yottabit]

Oh god, we're going to enjoy so many extrapolations from that slide. Jfc.

Zen60% !

 

[adroc_thurston]

which is a big part of 1.7 1.33X from cores 1.15 from node and 1.12 from cores

I've said *generously*.
I don't know what kind of nanoflex mix they're gonna use for Venice-D.

 

[511]

I've said *generously*.
I don't know what kind of nanoflex mix they're gonna use for Venice-D.

well yeah but if i have to fathom a guess it will be the densest version to be able to pack 32C in a CCD

 

[adroc_thurston]

it will be the densest version to be able to pack 32C in a CCD

Packing 32C into one CCD is really easy on N2.

 

[511]

Packing 32C into one CCD is really easy on N2.

well they can pack 48 they if want depending on their die size but i don't know the die size for 32C . I am basing it on how they have done they dense parts

 

[adroc_thurston]

well they can pack 48

Yes, but cloud wants specific core counts per socket.

 

[Kepler_L2]

Zen60% !

60% IPC, -20% clock speed. Heard it here first

 

[511]

60% IPC, -20% clock speed. Heard it here first

69% IPC SOURCE: NOT MLID

 

[marees]

That s not all, there s an update for this CPU as early as 2027.

AMDs HPC-AI-Roadmap: Instinct MI500 mit Epyc „Verano“ kommt bereits 2027

AMDs neue HPC-AI-Roadmap blickt zwei Jahre voraus. 2027 soll neben Instinct MI500 auch die siebte Generation Epyc erscheinen.

www.computerbase.de

Zen 6? Zen 6+? Zen 7 ??

 

[511]

Zen 6? Zen 6+? Zen 7 ??

It is still N2 so Zen6+ is most likely

 

[adroc_thurston]

It is still N2 so Zen6+ is most likely

Zen3 was still N7.

 

[511]

Zen3 was still N7.

now that i check their launch date as well both were only a year apart as well it could be Zen 7 but i would believe it would be based on Zen 6.
what say you @Kepler_L2

 

[DisEnchantment]

Sounds about right. The 9965 is already 500 W tho... and even though N2P's power savings is good, 500 W is pushing it.

Auras AMD SP7 Liquid Cooling Cold Plate for 600W CPUs Shown at Computex 2025

Auras showed its next-gen AMD SP7 liquid cooling cold plates for up to 600W CPUs at Computex 2025 next to other next-gen designs

www.servethehome.com

Seems SP7 are at the maximum 600W CPUs, if not lesser.



But they won't be able to sacrifice all the power efficiency gains to get max node frequency uplift, roughly there is 33% more cores with 20% more power.
Doubtful clocks on this SKU be will that much higher.

 

[adroc_thurston]

https://twitter.com/x/status/1933411116396491045

 

[511]

https://twitter.com/x/status/1933411116396491045

You beat me to it :rofl:

 

[511]

Socket to Socket Bandwidth is 64 Gen6 Lanes roughly 484 GB/s Socket to Socket Bandwidth vs nearly 252 GB/s bandwidth for Turin

 

[Timorous]

60% IPC, -20% clock speed. Heard it here first

Watch this get quoted by the typical leaker sites and then spread around Reddit and then MLID will pick up something from his sources and then someone here will post that video.

 

[511]

Watch this get quoted by the typical leaker sites and then spread around Reddit and then MLID will pick up something from his sources and then someone here will post that video.

He has to post this on Twitter for it to happen as someone said Anadtech doesn't get clicks 🤣

 

[Kepler_L2]

now that i check their launch date as well both were only a year apart as well it could be Zen 7 but i would believe it would be based on Zen 6.
what say you @Kepler_L2

I found Verona in some Fam1Ah files so it should be Zen6 but it's possible it could be Zen7 I guess.

 

[marees]

Verona

Verona or Verano ?