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First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

extremetech.com

11–20 of 108 posts

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#11
post #3

Single core performance? All i'm seeing is the confirmation that independently parallalizable tasks finish twice as fast on a cpu with twice the cores. cool, amdahl's law is proven. The handbrake one, all the times seems similar indicating similar single core perf. This matters for me since single core perf is pretty important for visual studio/other software with alot going on feeling "snappy" even tho the actual co…

Single core should be not much worse than Ryzen.

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Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#12

"One big disparity between the three machines was the Zen 4 machine was outfitted with 512GB of memory, while its competition had just 128GB each" This feels like cheating to me.

I guess that depends on how memory bound the test is.

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#13
post #8

Earlier quoted context omitted.

Yep seems about the same single thread wise which is a bit weird since 7950x3d base clock is 4.2 whereas the 7995wx is 2.5. https://www.cpubenchmark.net/compare/5726vs5234vs3862/AMD-Ry...

Single threaded tasks should never run at the base clock. The base clock can pretty much be thought of as the minimum clock speed you should see when all cores are maxed out and the thermal solution is only just meeting the spec.

I still want my computer to remain responsive even when I'm rendering in the background.

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#14

Single core performance? All i'm seeing is the confirmation that independently parallalizable tasks finish twice as fast on a cpu with twice the cores. cool, amdahl's law is proven. The handbrake one, all the times seems similar indicating similar single core perf. This matters for me since single core perf is pretty important for visual studio/other software with alot going on feeling "snappy" even tho the actual co…

Threadripper is as the name implies, purely MT focused.

I run simulations that are inherently completely single-threaded and I lean on Geekbench which tend to be a good predictor for me. As far as I can tell, Intel still holds the crown in absolute ST perf, granted at horrific efficiencies: https://browser.geekbench.com/processor-benchmarks/ (be sure to ignore the "Top Single-Core Results" which AFAICT is full of BS numbers). Intel's latest 14900K isn't there yet, but should be a smidgen faster: https://www.techspot.com/news/100034-intel-core-i9-14900k-to...

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#15

Single core performance? All i'm seeing is the confirmation that independently parallalizable tasks finish twice as fast on a cpu with twice the cores. cool, amdahl's law is proven. The handbrake one, all the times seems similar indicating similar single core perf. This matters for me since single core perf is pretty important for visual studio/other software with alot going on feeling "snappy" even tho the actual co…

> All i'm seeing is the confirmation that independently parallalizable tasks finish twice as fast on a cpu with twice the cores. cool, amdahl's law is proven.

Yes, but if you can squeeze more cores in the same space (and/or power) envelope, and not suffer a performance per core penalty, you're winning.

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#16

"One big disparity between the three machines was the Zen 4 machine was outfitted with 512GB of memory, while its competition had just 128GB each" This feels like cheating to me.

Why? Extra RAM has no effect on most types of performance.

These chips have 8 channel ram, so you need at least 8 sticks to get full ram bandwidth.

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#17
post #8

Earlier quoted context omitted.

Single threaded tasks should never run at the base clock. The base clock can pretty much be thought of as the minimum clock speed you should see when all cores are maxed out and the thermal solution is only just meeting the spec.

I still want my computer to remain responsive even when I'm rendering in the background.

I doubt 2.5ghz vs 4.2ghz is going to make any real difference to "responsiveness". The more pressing concern would be making sure the kernel actually schedules foreground workloads promptly.

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#18

"One big disparity between the three machines was the Zen 4 machine was outfitted with 512GB of memory, while its competition had just 128GB each" This feels like cheating to me.

They had to give the Eypc 4 more RAM to populate all its RAM channels. I've read it has 12 channels of DDR5.

I believe it is just 8

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#19

Earlier quoted context omitted.

Why? Extra RAM has no effect on most types of performance.

These chips have 8 channel ram, so you need at least 8 sticks to get full ram bandwidth.

Aren't there 16GB DDR5 sticks?

With smaller sticks, they could populate all the channels while keeping total memory capacity the same as other setups. I don't see why they had to splurge all the way up to 512GB.

Re: First 96-Core AMD Zen 4 Threadripper Tests Show Utter Domination over Intel

#20
post #9

"One big disparity between the three machines was the Zen 4 machine was outfitted with 512GB of memory, while its competition had just 128GB each" This feels like cheating to me.

They're testing CPU performance, not memory capacity. They need that much for the channels.

It just seems so incredibly sloppy to not have that be consistent. Do they expect all of their readers to then audit the code of the benchmarking that they are doing to ensure that it cannot possibly be bound by this?
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