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

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yottabit

Golden Member
Jun 5, 2008
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Now the hype has reached videocardz

Pretty soon Lisa Su will be citing ATOT performance figures
 

Rigg

Senior member
May 6, 2020
472
979
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You also couldn't buy one for many months after launch. The only Vermeer available was the 5800X in that time period.
I think it's fair to say that the pandemic had as much to do with that as the lack of competition. The fact that the 5800x was the only available SKU at the time speaks volumes about how bad its $450 MSRP was. Vermeer was also selling below MSRP well before Alder Lake was out.
 

AMDK11

Senior member
Jul 15, 2019
290
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Zen 4 has 4 ALU units.
Zen 5 supposedly has 6 ALU units.
Going from 4 to 6 means an increase of +50%.

IPC never scales proportionally to increased resources, and if with +50% more ALU Zen 5 achieves IPC of +20-25%, this will be a very good result.

GoldenCove already has 5 ALUs, which means Zen 5 has +1 more ALU, or +20%.

I believe the advantage of Zen 5 with the additional ALU over GoldenCove will give it about a 10% to 15% advantage.

I recently bought a glass ball, I just need to calibrate it
 

Ghostsonplanets

Senior member
Mar 1, 2024
384
658
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More from All the Watts (Her previous tweet I shared last page)


"Zen 5 is AMD's x86 equivalent to Apple architecture in size and IPC. The operating frequency of Zen 5 products will not be a problem. Zen 5 will sit above Zen 4. Be patient to see the surprise Lisa has for you."


"Up to 6 GHz F-Max"

Other tweet(Can't share more than 2 media):


"The Strix Halo iGPU > has 20 WGPs using the RDNA3+ architecture running at 3000 MHz."


These are more or less in-line with what Kepler and Adroc haven been saying. Interesting...
 

Gideon

Golden Member
Nov 27, 2007
1,665
3,778
136
Zen 4 has 4 ALU units.
Zen 5 supposedly has 6 ALU units.
Going from 4 to 6 means an increase of +50%.

IPC never scales proportionally to increased resources, and if with +50% more ALU Zen 5 achieves IPC of +20-25%
By that logic you shouldn't have gotten half that from Zen 1 -> Zen 4 as the ALU count was unchanged. In reality it's considerably over 40% IPC
 

Tuna-Fish

Golden Member
Mar 4, 2011
1,363
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Are we expecting an AM5 variant of this one too (similar to 8700G for Zen4)? Would be really nice I think.

It can't be fit on AM5 because it has a 256bit bus.

The "CUT-Down" version - it might since it will be 128 bit bus, but realistically how big of a chance for it exists?

I think that would be pointless compared to normal Strix. You are not going to eke out all that much GPU performance from 128-bit DDR5, no matter how much compute power you have on the system.

(edit: should have refreshed)
 
Jul 27, 2020
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I don't see the point of that to be honest- on a 128-bit DDR5 bus, that big GPU would be completely bottlenecked.
Novel idea for a new product. Don't anyone patent this under your name, please!

A half height PCIe 5.0 daughtercard for Strix Halo that expands the 16GB on-chip RAM with additional 16 or 32GB GDDR6 or GDDR7. Yes, it will contain only the RAM chips and the controller chip required for PCIe communication. This will alow OEMs to sell desktop mobos without having to worry about making expensive 32GB or higher onchip RAM SKUs that are wayy too expensive for the average consumer to afford in one go. Wait a year and upgrade the quasi-desktop PC with the daughtercard to make it run games more smoothly.
 

Gideon

Golden Member
Nov 27, 2007
1,665
3,778
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I don't see the point of that to be honest- on a 128-bit DDR5 bus, that big GPU would be completely bottlenecked.

I hope we'll see it in either it's own new socket, or at least available soldered down on Mini-ITX boards.
A new AM5+ socket with CAMM2 modules would be quite rad! Could also support Strix point with half the channels.

Would make little financial sense for AMD probably.
 
Reactions: Tlh97 and NTMBK

AMDK11

Senior member
Jul 15, 2019
290
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116
By that logic you shouldn't have gotten half that from Zen 1 -> Zen 4 as the ALU count was unchanged. In reality it's considerably over 40% IPC
What does this mean? This proves nothing other than that the use in Zen1 4ALU was far from optimal. Do not get me wrong. I would like Zen 5 to be as good or even better, but I doubt that in the first generation the Zen5 core with 6ALU was expanded so much that it could optimally use 50% more execution units.

Of course, this will be verified soon.
 
Reactions: Gideon

inf64

Diamond Member
Mar 11, 2011
3,706
4,050
136
I'm now almost certain that ARL will be DOA, we now have multiple people claiming that Granite Ridge will be clearly a faster product. If that is true, we'll have to wait until 2026 for something competitive from intel on desktop.
 
Reactions: Tlh97 and Joe NYC

Abwx

Lifer
Apr 2, 2011
11,039
3,686
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What does this mean? This proves nothing other than that the use in Zen1 4ALU was far from optimal. Do not get me wrong. I would like Zen 5 to be as good or even better, but I doubt that in the first generation the Zen5 core with 6ALU was expanded so much that it could optimally use 50% more execution units.

Of course, this will be verified soon.

But the ALUs are the exe units, the FPU is still under the ALUs s control for completion of the operations.

Beside your comparison to Intel s 5 ALUs is not relevant since that s not the same uarch, you forgot that Zen 4 has 4 ALUs and is still on par with GC IPC wise.
 
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