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

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Jun 1, 2024
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regardless true or not, it's the right thing to do

as mobile becomes thermally practical enough tobe desktop replacements (power+slim balance)
desktop doesn't make sense anymore and should be replaced by client-friendly server mobo+epyc/threadripper

already happening with mac pro i.e. M2 ultra desktop = M3 max laptop

is there any real reason to get 9950X instead of threadripper or phoenix/STXH?

calling it now Medusa will be the real x86 desktop killer

if not zen6 then definitely 100% the tsmc 2nm version
 

Mahboi

Golden Member
Apr 4, 2024
1,007
1,831
96
Thing I just noticed re-reading the Zen 5 Info thread:

Zen 5Zen 4Zen 3Zen 2
Transistor Count8.315B6.5B4.15B3.9B
6.5 / 4.15 = 56% increase
8.315 / 6.5 = 27.9% increase

How did Zen 4, which is supposedly more or less a tweak on Zen 3, have this much more transistor count? Obviously the node leap was massive, but...that's still huge. 56% more.
Zen 5 is a massive rework with a completely new decode, and they still only added 28% in comparison.
 
Reactions: Racan

MS_AT

Senior member
Jul 15, 2024
210
507
96
Thing I just noticed re-reading the Zen 5 Info thread:

Zen 5Zen 4Zen 3Zen 2
Transistor Count8.315B6.5B4.15B3.9B
6.5 / 4.15 = 56% increase
8.315 / 6.5 = 27.9% increase

How did Zen 4, which is supposedly more or less a tweak on Zen 3, have this much more transistor count? Obviously the node leap was massive, but...that's still huge. 56% more.
Zen 5 is a massive rework with a completely new decode, and they still only added 28% in comparison.
Caches. L2 got twice as big. I think uop cache got larger, not sure about BTBs and so on. And don't forget about register files [not only more entries but for SIMD they doubled in size] and tweaks to make it clock higher
 

Philste

Senior member
Oct 13, 2023
251
444
96
How did Zen 4, which is supposedly more or less a tweak on Zen 3, have this much more transistor count? Obviously the node leap was massive, but...that's still huge. 56% more.
L2 doubled, AVX512 and actually the higher clocks need a big Transistor budget. The Core itself also has enough changes, of course not the big obvious ones that ZEN5 has but the 13% IPC of ZEN4 isn't that much below ZEN5s 16%.
 

Josh128

Senior member
Oct 14, 2022
296
410
96
Thing I just noticed re-reading the Zen 5 Info thread:

Zen 5Zen 4Zen 3Zen 2
Transistor Count8.315B6.5B4.15B3.9B
6.5 / 4.15 = 56% increase
8.315 / 6.5 = 27.9% increase

How did Zen 4, which is supposedly more or less a tweak on Zen 3, have this much more transistor count? Obviously the node leap was massive, but...that's still huge. 56% more.
Zen 5 is a massive rework with a completely new decode, and they still only added 28% in comparison.
Cache, double pumped AVX-512 & frequency increase. AMD has stated in the past, I think it was for RDNA 2, that designing for higher frequency requires higher transistor count, as counterintuitive as it seems.
 

Abwx

Lifer
Apr 2, 2011
11,517
4,303
136
Typical AMD APU launch.
View attachment 106474

Typical clulessness used as argument.to badmouth AMD.

If 26 games out of 30 work flawlessly it means that the 4 remaining ones have half broken code, i wont abound on that matter but FI google "Resident Evil crash", and do the same with F1 24, it s just so much easy to blame AMD for the incompetence of some games developpers.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
26,065
15,205
136
Thing I just noticed re-reading the Zen 5 Info thread:

Zen 5Zen 4Zen 3Zen 2
Transistor Count8.315B6.5B4.15B3.9B
6.5 / 4.15 = 56% increase
8.315 / 6.5 = 27.9% increase

How did Zen 4, which is supposedly more or less a tweak on Zen 3, have this much more transistor count? Obviously the node leap was massive, but...that's still huge. 56% more.
Zen 5 is a massive rework with a completely new decode, and they still only added 28% in comparison.
Z3 to Z4, got a onboard GPU for the first time since Z1 and avx-512. Z4 to Z5, avx512 doubled in capacity and others have mentioned several things. THose were the most noticeable things though.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
26,065
15,205
136
Anybody giving credence to to someone commenting on server performance of Genoa over Milan who does not think it was an immense improvement is frankly a moron. in addition to the mhz which is like one ghz more at full load of all cores, plus the addition of avx-512, which IS a real server thing, proves they don't know what they are talking about. Genoa to Turin, I will know soon, as I have a Turin in my hand. But doubling the avx-512 alone is a big change. I don't expect that many other noticeable changes, but we will see.
 

Josh128

Senior member
Oct 14, 2022
296
410
96
Anybody giving credence to to someone commenting on server performance of Genoa over Milan who does not think it was an immense improvement is frankly a moron. in addition to the mhz which is like one ghz more at full load of all cores, plus the addition of avx-512, which IS a real server thing, proves they don't know what they are talking about. Genoa to Turin, I will know soon, as I have a Turin in my hand. But doubling the avx-512 alone is a big change. I don't expect that many other noticeable changes, but we will see.
How do you have a Turin in hand? ES? What is stopping you from running it now?
 

Hail The Brain Slug

Diamond Member
Oct 10, 2005
3,487
2,412
136
Z3 to Z4, got a onboard GPU for the first time since Z1 and avx-512. Z4 to Z5, avx512 doubled in capacity and others have mentioned several things. THose were the most noticeable things though.
These are the transistor counts for the CCD, so core and CCX changes only - iGPU, I/O, IMC, IOD changes are not reflected here.
 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
26,065
15,205
136
How do you have a Turin in hand? ES? What is stopping you from running it now?
Gee, first there is no motherboard or vendor that has Turin CPU BIOS out there , so if I put my $2600 aquisition in, its a risk. Yes, its an ES. I have to decided to take the risk.
 
Reactions: marees
Jul 27, 2020
19,613
13,481
146
If 26 games out of 30 work flawlessly it means that the 4 remaining ones have half broken code, i wont abound on that matter but FI google "Resident Evil crash", and do the same with F1 24, it s just so much easy to blame AMD for the incompetence of some games developpers.
True. If a studio doesn't test on AMD APUs, not AMD's fault. They are just ignoring a potentially large percentage of sales, especially in second/third world countries.
 
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