[computer-go] Re: OpenMP / Quad Core experiments (repost)

[Darren Cook]

>> One more puzzle: this processor is rated at 2.4GHz,
>> but cpuinfo tells a different story:
> 
> It's because SpeedStep is working.  You can stop it in BIOS setting.
> http://en.wikipedia.org/wiki/SpeedStep

Thanks! I've the same CPU and just discovered mine is running at 1.6Ghz
too! For linux users some more information is here: http://rffr.de/acpi
But ubuntu default kernel does not seem to have the "scaling_setspeed".
I don't remember a bios setting but will check again.

To the original poster, I found mogo is a good way to test the 4 CPUs as
I could control how many threads to give it. It was considerably quicker
with 4 threads (even at 1.6Ghz as it now turns out!) than my celeron 2.8
Ghz. Also I read some CPU reviews and benchmarks before ordering this
and it was getting very good results on software designed to use 4+
threads. So I don't think you've bought a dud.

Darren