3 ms·
I don't think there's room for margin any more. Margin means fixing a power limit slightly lower than what the worst machine can sustain. That probably means le
by tlb 8y ago
I don't think there's room for margin any more. Margin means fixing a power limit slightly lower than what the worst machine can sustain. That probably means leaving 10-20% performance on the table for average machines.
- stefan_ 8y agoNo, you don't get to blame this on the processor. Modern processors are perfectly capable of operating exactly at the limit of the cooling system they are provided. No worries there. There is no "setpoint" you need to set; the processor ramps up, then sustains. This is purely a mechanical engineering issue. They haven't designed it properly.
- tlb 8y agoChips vary considerably in the amount of power they use at a given frequency, as a result of silicon process variations. Consider table 5 in http://charm.cs.illinois.edu/newPapers/16-08/paper.pdf http://charm.cs.illinois.edu/newPapers/16-08/paper.pdf. So even with identical cooling systems, some chips will outperform others.
- EpicEng 8y agoYet that's all rather irrelevant im context considering that apple controls every aspect of their machines.