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

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ToTTenTranz

Member
Feb 4, 2021
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161
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Sort of. 3.5 actually works.

It supposedly has better voltage-clock curves, which is why they're putting an additional 2 WGPs in there without increasing power consumption, but IPC-per-WGP should be similar between the two.

Of course, Strix Point's GPU should be even more bandwidth bottlenecked than Phoenix's because there's 33% more WGPs and 13.8% higher RAM bandwidth (plus a CPU with more cores = more demanding for the memory controller).
 

adroc_thurston

Diamond Member
Jul 2, 2023
3,322
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It supposedly has better voltage-clock curves, which is why they're putting an additional 2 WGPs in there without increasing power consumption, but IPC-per-WGP should be similar between the two.
Yeah, but clocks is where RDNA3 struggled.
Of course, Strix Point's GPU should be even more bandwidth bottlenecked than Phoenix's because there's 33% more WGPs
Phoenix wasn't bandwidth-bound much, and neither was RMB.
STX is, though, MALL would've been real handy for actual video games
 
Reactions: Joe NYC
Jun 1, 2024
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CPU: AMD Ryzen AI 9 HX 170
Min/Max/Avg: 3545/3673/3653 MHz
Codename: Strix Point
Single: 2544
Multi: 14158
https://browser.geekbench.com/v6/cpu/6418984

This is extremely disappointing



my GB 6.3 results on 7840HS (same as 8845HS)

single 2396
multi 12477
and that's with 3 browsers open, 50 tabs active and another 600 inactive, several apps open and music playing in background

YIKES!!!!!!!!!!!!!!!!
 
Reactions: invisible_city

gdansk

Platinum Member
Feb 8, 2011
2,489
3,381
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The 7840U I tested scored 2642/11352 in GB6.
But the model name, clock rates and/or clock rate reporting don't seem to be correct for that Strix example.
 
Jun 1, 2024
42
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are you saying the strix point GB bench is fake?

also the theory that "linear 5.1 will be 3500+" is plain wrong

just did 7840hs gb6.3 @ base freq with boost disabled

1975 single
10848 multi
~20% difference

which means at very best case strix point at max boost (?) has around 2800 single 15000 multi
 

Abwx

Lifer
Apr 2, 2011
11,167
3,862
136
This is extremely disappointing



my GB 6.3 results on 7840HS (same as 8845HS)

single 2396
multi 12477
and that's with 3 browsers open, 50 tabs active and another 600 inactive, several apps open and music playing in background

YIKES!!!!!!!!!!!!!!!!

With browsers opened those numbers are meaningless, the higher score at NBC is 2721 for the 7840HS, wich is 13.5% higher than your score, so your CPU didnt clock at 5.1GHz in ST, rather at 4.6-4.7GHz.

 

Hitman928

Diamond Member
Apr 15, 2012
5,600
8,790
136
Zen5 @ 5.7ghz = ~3950points according to that scaling
Almost seem too good to be true 👍

GB doesn't scale linearly with clock speed across a wide frequency range, but it usually isn't too far off. It can be accurately approximated as linear if the frequency difference is relatively small, but with multiple GHz, it's going to be less than linear.
 
Reactions: lightmanek

Hitman928

Diamond Member
Apr 15, 2012
5,600
8,790
136
are you saying the strix point GB bench is fake?

also the theory that "linear 5.1 will be 3500+" is plain wrong

just did 7840hs gb6.3 @ base freq with boost disabled

1975 single
10848 multi
~20% difference

which means at very best case strix point at max boost (?) has around 2800 single 15000 multi

GB says your higher run was run at between 4.6 - 4.7 GHz. So from base, that is approximately a 22% increase in frequency for 21% more performance, pretty close to linear.

Edit: Comparing your base freq. run to the STX point result, the STX CPU has a 29% higher score while running at a ~4% slower frequency. Not sure why you think that is extremely disappointing. If it ran at 5.1 GHz, it should score at least 3350 pts, if not higher (3554 would be perfect scaling but it won't quite get that).
 
Last edited:

adroc_thurston

Diamond Member
Jul 2, 2023
3,322
4,790
96
Comparing your base freq. run to the STX point result, the STX CPU has a 29% higher score while running at a ~4% slower frequency. Not sure why you think that is extremely disappointing. If it ran at 5.1 GHz, it should score at least 3350 pts, if not higher
Bingo.
Now, if you look at the subtests, that's where it gets more interesting.
The INT side is pumping the score.
 

inf64

Diamond Member
Mar 11, 2011
3,764
4,222
136
GB says your higher run was run at between 4.6 - 4.7 GHz. So from base, that is approximately a 22% increase in frequency for 21% more performance, pretty close to linear.

Edit: Comparing your base freq. run to the STX point result, the STX CPU has a 29% higher score while running at a ~4% slower frequency. Not sure why you think that is extremely disappointing. If it ran at 5.1 GHz, it should score at least 3350 pts, if not higher (3554 would be perfect scaling but it won't quite get that).
I was about to reply to that post but you beat me to it again. The scores are looking good so far, but we need to wait for granite ridge leaks to be sure.
 
Reactions: lightmanek
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