At 09:17 PM 2/14/2005, John R Pierce wrote:
yes, and the operating systems inability to know how effective hyperthreading can be.
It is on Windows XP home, SP2. Would XP Pro be better?
try disabling hyperthreading, its generally a setting in your BIOS setup. prime95 might run slightly faster, but the rest of your system will run somewhat slower.
Well, the benchmark shows prime95 running "fast enough". It is faster than my slower P4 w/o HT. I think I'll leave HT on, since prime95 isn't the primary reason for the machine.
but, faster CPUs don't scale linearly with clock speed, as the memory is generally not proportionally faster.
The memory on this new machine should be faster than my old one. The old one uses PC2700 DDR with a 533 FSB - the new one uses DDR2 PC2-3200 (or higher) dual channel, 800 FSB.
no, two at once would cause major problems. As there is only one floating point/SSE processor, and Prime95 is heavily optimized to keep the FPU efficiently pipelined, trying to hyperthread two Prime95's would be a serious net LOSS due to resource contention.
Thank you.
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