As I email'd previously, I have an Intel Pentium 4 1.9 GHz with PC800
RAM in an Intel D850GBC motherboard running Windows 2000. Even with no
other programs running, and a minimal of services, (100% of cpu
dedicated to prime95), I get approximately 0.180 seconds/iteration.
According to the benchmark on mersenne.org, I should be getting closer
to 0.143 seconds/iteration. I suspect that my Pentium 4 may be engaging
its built in "Thermal Monitor" feature, which is mentioned on Intel's
website, without extensive documentation (as far as I can find). The
Thermal Monitor is a temperature sensor inside the Pentium 4 which
detects when the processor is getting too hot and reduces system
performance in order to compensate. I have noticed
using my motherboard's temperature sensor (different from the internal
P4 sensor), that Prime95 raises my CPU temperature from approximately
90 to 95 F to exactly 124 F, which is immediately below an indicated
threshold. This makes me suspect that the P4's Thermal Monitor
is engaged and could be causing the performance decrease. I have looked
for, but have not found, a way to detect whether or not the Thermal
Monitor is infact being activated. I want to make sure this is the case
before taking drastic actions on my CPU's cooling system. Any help would
be appreciated.
Thanks,
David Meyer ([EMAIL PROTECTED])
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