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Those TDPs look pretty high, what are vendors willing to put into 1U high 0.5U wide style servers with 2 sockets these days? Last I looked I seem to recall it w
by gbrown_ 9y ago
Those TDPs look pretty high, what are vendors willing to put into 1U high 0.5U wide style servers with 2 sockets these days? Last I looked I seem to recall it was around up to 145W.
- quickben 9y agoAll of them? Nothing Intel made so far can compete with the efficiency.
- lettergram 9y agoI would agree, but there appears to be a 15% to 20% improvement of efficiency. Meaning, the processing power per watt is worth more.
- sliken 9y agoKeep in mind that AMD puts more on chip than Intel, so you should look at system power, not socket power. The comparisons so far I've seen show AMD doing as well or better than Intel on perf/watt.
- satai 9y agoAMD EPYC 7601 Dual Socket Early Power Consumption Observations https://news.ycombinator.com/item?id=14598660 https://news.ycombinator.com/item?id=14598660 https://www.servethehome.com/amd-epyc-7601-dual-socket-early-power-consumption-observations/ https://www.servethehome.com/amd-epyc-7601-dual-socket-early...
- rb808 9y ago> Running an AVX2 workload we were expecting much higher power consumption but at under 500w for 128 threads, this is excellent. eish
- revelation 9y agoGranted the AVX2 performance of the Zen processors is intentionally crippled. It's more of a software compatibility implementation than actual performance boost.
- Recurecur 9y agoCitation?
- revelation 9y agoAgner on microarchitecture [1], page 213, another mention as a bottleneck on page 216: The Ryzen supports the AVX2 instruction set. 256-bit AVX and AVX2 instructions are split into two µops that do 128 bits each. AVX2 increased register width from 128-bit (AVX) to 256-bit, yet Ryzen cores can only process them 128-bit at a time. There is more to AVX2 than just width but that means in comparison to Intel processors, which can do the full 256-bit in a µop, the Ryzen throughput will suffer in tests that heavily emphasize AVX2 instructions (think video encoding). 1: http://www.agner.org/optimize/microarchitecture.pdf http://www.agner.org/optimize/microarchitecture.pdf
- Recurecur 9y agoThanks!
- piinbinary 9y agoThe TDP for the 32 core chip (180W) is lower than the TDP was for their 8 core FX-9590 (220W). Granted, that wasn't a server chip.