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

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igor_kavinski

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Jul 27, 2020
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40W: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41252027
60W: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41252719
80W: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41253719
100W: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41254064
120W: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41254436
160W, 200W and 230W: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41254696

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gaav87

gaav87

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Apr 27, 2024
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tsamolotoff said:
You can also add the first score (38.3k ish) for essentially unlimited mode, as it does not go above 170W with any PPTs etc.
Click to expand...
IT would be above 170w if you had it DELID with diamond cpu-waterblock, underground salt water reservoir at -3C, with premium industrial heathing pumps, heatexchangers, two car radiators. According to some people. :tearsofjoy::tearsofjoy:
 
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tsamolotoff

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May 19, 2019
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gaav87 said:
IT would be above 170w if you had it DELID with diamond cpu-waterblock, underground salt water reservoir at -3C, with premium industrial heathing pumps, heatexchangers, two car radiators. According to some people. :tearsofjoy::tearsofjoy:
Click to expand...
I actually have a sort of car radiator (Bykski B-RD1080-TK-V2 in addition to two 360 rads) and i use LM instead of paste, but it wouldn't probably go above much this amount of watts even with delid because it's mostly voltage limited, not thermally limited. Of course, there is something that prevents proper heat transfer with x3d cores (just compare temps on my highest score screenshot), but even with that CPU could probably do more (normal z4 can do 5.5 ghz all core with 1.25v ish even without delid)
 
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igor_kavinski

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Jul 27, 2020
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Perf/watt comparison 9950X ES vs. Det0x's optimized 7950X

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Det0x's data source: https://forums.anandtech.com/thread...ranite-ridge-ryzen-9000.2607350/post-41255152

Past 100W, 7950X can't compete on perf/watt in this benchmark and basically game over after 210W PPT. But it does show that if you are allergic to watts, 7950X will offer you better performance for your electricity bill at lower power levels.

STILL, for most of us, it's

RIP 7950X.

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Det0x

Det0x

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Sep 11, 2014
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Think we will need a proper V/F curve for 16core Zen5 before we can draw any final conclusions in regards to the comparison above..
Dont think the V/F curve for the 9550X ES is optimized/finalized at the lower end of the spectrum (sub 160w)

After i get a retail 9950X in my hands, i can do a real apples to apples comparison
 
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tsamolotoff

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May 19, 2019
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What is interesting how the leakers got their IPC increase numbers with epycs if this trend is also prevalent among those SKUs (and if TDP wasn't increased they should roughly get the same amount of watts per core like 9950x at 60W PPT or less)
 
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A

Abwx

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Apr 2, 2011
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igor_kavinski said:
True but it will be very surprising if the retail sample does well at the lower power levels.
Click to expand...

Your ES is fed with the right cores voltages but the VRMs voltage is kept at a fixed value whatever the cores effective voltage.

This way the CPU integrated regulators have very low efficency at lower cores voltage since their voltage drop is uselessly high, with a proper implementation the VRMs voltages will be reduced to lower values with the ES when the cores are fed with a very low voltage, as to get the integrated regulators voltage drop at an adapted value.
 
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igor_kavinski

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Hemu2K said:
48K @300W is insane, hopefully the temps are much easier to handle this gen.
Click to expand...
Bit less efficient than a monster 128 thread 7702P but hey, it's almost delivering similar perf with 4x fewer threads!

www.cgdirector.com

Cinebench R23 Scores [Updated Results]

Cinebench R23 is the newest instalment of the most popular CPU-Rendering Benchmark Cinebench. We have the Score Results for all modern Processors.
www.cgdirector.com www.cgdirector.com

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Timmah!

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Jul 24, 2010
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Saylick said:
Yep.

Not bad in the grand scheme of things. Same CCD die area (~70 mm2), >20% increase in density while maintaining clocks, +16% IPC uplift, and even a small boost to perf/W. Oh, and they managed to add AVX512 and allegedly running AVX512 doesn't reduce clocks. If you can't call that a success, Idk what does.
https://twitter.com/x/status/1813281978591944827
Click to expand...
So no about 30GHz slower as was the case with Skylake-X? :-D
 
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majord

Senior member
Jul 26, 2015
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just drilling down into the screenshots of haims run with identical scores at 60w ppt..

little tidbit

9950X: 35w core pwr /2686Mhz [23985cb]
7950X: 36.9w core pwr/3160Mhz [23780cb]

= 17.6% higher clocks

looking at the VId's it seems the ES is asking a tad more Volts per Mhz in these lower ranges.. have to plot it. but if that's the case, there may be some better perf/watt in retail if that can be brought down a bit. Not sure what the Vf curve would be expected to look like on this process on the same core ( obviously this isn't the same core, but it does have similar Vmax it seems)
 
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