Hello, I have a FX-8320E (8cores) Why Raceroom work on 4 cores only ? I've bad perf on nordschleife. Other game works on 8 cores.
Im not sure this is completely accurate. 64 bit is primarily about memory usage, not cpu usage. RR is just a very old game that is not designed/optimized for cpu's with lots of cores.
Well, yeah, DX9 games don't work very well with a lot of cores. But, from what I have seen the 64bit exe spreads the load more evenly on cores while the 32bit one relies mainly on 2 cores.
AFAIK @nate is right. The 64 bit executable can use more RAM, but not more cores. RaceRoom itself uses 1 (one) core. If on your system more than one core is used then these additional cores are used by another process - whatever this might be. And please keep in mind that the exact core any process is using is not decided by the process itself. Windows decides this. And Windows often changes the core an application uses. So if an application, that uses one core to 100%, randomly switches between 2 cores, in task manager it looks like it is using both, about 50% each. Unfortunately for AMD users, racesims are still quite heavy on the CPU because of the many not-graphics-related calculations to be made that can't be done by the GPU. That's unfortunate because AMD CPUs, while having a lot of cores, have a weaker single core performance than Intel CPUs.
@Arthur Spooner you mean "old race Sims" there is nothing that prevents new engines to use more cores and GPU