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AMD EPYC 9554 & EPYC 9654 Benchmarks - Outstanding Performance For Linux HPC/Servers
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Originally posted by pegasus View PostFor all the "wow" commentators, just wait till you see the zen5 epycs Even the Mi300 next year will be bonkers.
Now, what I would really like to see is a passively cooled desktop chip. Just the other day I realized that my use of computer didn't change at all since Pentium 200 days which that had a TDP of 13W and ran all I wanted just fine. Only drive for more performance has been fsckin web and multimedia consumption. So it should be doable to do these things today at 2-3W tdp ... Why are we not doing it?Last edited by t.s.; 11 November 2022, 09:01 PM.
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Originally posted by Paradigm Shifter View PostSapphire Rapids top-end has 350W TDP. If the server chips do similar things to the consumer chips, they'll exceed that by a significant margin when boosting.
This is essentially why 14 nm Xeons would experience such heavy clock-throttling from AVX-512, while the desktop Rocket Lake CPUs would just guzzle more power while clocks barely dipped.Last edited by coder; 11 November 2022, 11:51 PM.
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Originally posted by pegasus View Postwhat I would really like to see is a passively cooled desktop chip.
Originally posted by pegasus View PostJust the other day I realized that my use of computer didn't change at all since Pentium 200 days which that had a TDP of 13W and ran all I wanted just fine. Only drive for more performance has been fsckin web and multimedia consumption. So it should be doable to do these things today at 2-3W tdp ... Why are we not doing it?
However, consider that you can browse the web on a passively-cooled phone (even with the browser set to "desktop" mode), which uses in the realm of that 2 - 3 Watts you mention.Last edited by coder; 12 November 2022, 12:19 AM.
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Originally posted by alberto-pv View PostI think AMD should considering Intel may not be their main rival in the near future, ARM CPU makers could be.
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Originally posted by pegasus View PostI've been screaming "perf per watt is the right metric, not just raw perf" for more than a decade and nobody cared ... Looks like electricity is waaay too cheap for anyone to care. Luckily things are now changing.
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Originally posted by t.s. View PostYou can. Get something like Odroid N2+. Or Orangepi 5. Or Rock5B. These guys idle at ~2 watt. < 2 watt with small tweak. The catch is (there's always a catch) it's ARM architecture.
The Orange Pi 5 supports more RAM, but says it requires a 20 W power supply. I don't see where their peak power dissipation is stated, however.
Driver support for the GPUs and hardware video decoders in these SBCs tends to be somewhat spotty. That's why I like going the Intel route - their Apollo/Gemini/Jasper/Elkhart Lake SoCs have iGPUs of the same lineage that we see on desktop and mobile. Their drivers are similarly reliable.
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Originally posted by coder View PostHowever, consider that you can browse the web on a passively-cooled phone (even with the browser set to "desktop" mode), which uses in the realm of that 2 - 3 Watts you mention.
Otherwise we'll get mandatory liquid cooling not only for servers, but for "gaming rigs" as well before 2025. Madness ...
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Originally posted by pegasus View PostYes ... what is now used in phones should be available in laptops and todays laptop cpus should be available in desktops.
Otherwise we'll get mandatory liquid cooling not only for servers, but for "gaming rigs" as well before 2025. Madness ...
Luckily, you don't lose too much performance by reducing power limits. It's really just for that last 10-20% that you have to go from 65 W to 250 W. I'd imagine there's a similar delta between 35 or 45 W and 65 W. I think going below 35 W is probably going to be a bigger tradeoff, at least without dropping some PCIe lanes & speeds, as well as swapping out DDR5 for LPDRR5.
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