3 ms·
TDP is heat watts, not electricity watts. To measure electricity, you need to actually measure it. It's not a specified value. It also depends on workload. Yo
by dragontamer 3y ago
TDP is heat watts, not electricity watts.
To measure electricity, you need to actually measure it. It's not a specified value. It also depends on workload.
You will find that way high performance, all chips use more Watts than you expect.
But given most of the benchmarks I've seen, Xeon and EPYC hold firm as the most obvious powet-efficient and power-perfirmant chips in practice.
Apple M1 is pretty much the only chip in this discussion that's in the running. And only in 64-bit performance at that, the AVX512 units in Xeon are too good otherwise.
- geerlingguy 3y agoEPYC is decent, Xeon has a long way to go still. You mention actually measuring it, that's exactly what I've been doing in my top500 project: https://github.com/geerlingguy/top500-benchmark#results https://github.com/geerlingguy/top500-benchmark#results The RK3588 gets up to 4.64 Gflops/W, only beaten by a couple expensive Ampere Altra chips in my testing so far. A few of the newest EPYC chips touch that range, but none of the Xeons I've seen do (yet). I would like to test a few more but getting access to bare metal is tough, especially since I only need it for a day or two, but need to get it plugged into a consistent power monitoring device.
- dragontamer 3y agoInteresting project! Well, good luck with it. If you're using HPC Linpack, that could be a x2 multiplier difference between your results and my napkin math, as I've been assuming 32-bit Floats, while Linpack is 64-bit Floats IIRC.
- deleted 3y ago[deleted]