prime95 brings cpu to only 50%?

prime95 brings cpu to only 50%?

Original Message

Name: chopficaro
Date: May 15, 2008 at 13:59:17 Pacific
Subject: prime95 brings cpu to only 50%?
OS: 1
CPU/Ram: 3
Model/Manufacturer: 2

Comment:

i got an old Pentium 4 hyperthreaded, and when i run any of the three standard torture tests in prime95, my cpu processing tends to stay at approximately %50. it jumps higher for a millisecond or so once in a while, but it tends to stay at 50. shouldn't it be at %100? ive noticed this tendency in other applications as well.

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Response Number 1

Name: idisjunction
Date: July 29, 2008 at 19:15:05 Pacific
Subject: prime95 brings cpu to only 50%?

Reply: (edit)

Prime95 is probably only single-threaded. Thus,it will only max out one of the two threads available on the processor.
Try disabling HyperThreading in your BIOS, and see if it drives it up to 100%.

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