4 ms·
Big thing to also take from that article is that the POWER8 uses over 2 times as much power as the Xeon E5 v4. Depending on the use case this can be very import
by doikor 10y ago
Big thing to also take from that article is that the POWER8 uses over 2 times as much power as the Xeon E5 v4. Depending on the use case this can be very important.
- snuxoll 10y agoIf single-threaded performance or memory bandwidth is more important to your use case then POWER8 would steamroll a Xeon E5 v4 even factoring in the power usage, I'm actually looking at trying to get a S812LC at work to eval moving one of our very heavy transactional PostgreSQL databases to for this very reason (having to run a seq scan over a 80GB table would benefit heavily from the increased memory bandwidth).
- gpderetta 10y agoAs per article linked by the OP, the single threaded performance of the POWER8 is 87% of the Intel CPU at the same clock [1]. The per-core performance is higher thanks to the 8 thread SMT capability of POWER8 (although the sweet spot is normally 4) and its massive 8-way execution. So POWER8 is excellent for heavily threaded applications, but for pure single thread speed, Intel is still king. [1] IIRC POWER8 and Intel CPUs peak at around the same clock speed.