GP500 (GP500=07SBK.exe) is not overly happy running in Dual CPU, Dual Core or even Multithreaded CPU machines.

 

The problem is most visible on AMD Dual core PCs where random slow downs and speed ups can occur during racing.

 

On Intel Dual Core machines (including the new Core 2 Duo CPUs) the problem is most often shown at the menu where the mouse control is either slow or jerky or freezes altogether.

 

This seems to be a result of multi CPU aware video drivers and mouse drivers not speaking nicely to GP500.

 

So here are two executables that forces GP500 to run on a single CPU/CORE/THREAD

 

The first will run GP500 on the first CPU (Called CPU 0 for some unknown reason)

 

The second will run GP500 on the seconds CPU, which is quite often the better choice as virus detectors etc can randomly use a lot of the first CPU’s bandwidth.

 

 

I also suggest that GP500 fans also look at the AMD Dual-Core Optimizer utility and AMD Athlon?64 X2 Dual Core Processor Driver for Windows XP at this site

 

http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_871_13118,00.html

 

 

 

I highly recommend the KB8fxxz56 Windows XP Patch is also applied which is available from this site

 

http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=C2AB5A48-8240-4934-BBD8-34FB8A0FCE3B

