so i recently bought a GTX 460 1g from EVGA, I have the latest drivers and while using the evga overclocking tool and also even the msi after burner it says the the clock should be at 875mhz but gpu-z and the overclocking tools show that the core clock and shader clock is at 405core and 810 shader. why does it do that, i seem to get regular clocks when i start up my comp. also i noticed, in the EVGA OC scanner under GPU monitoring, it only goes to the clocks i want when it says p0, abd drops to the 405 clock when it shows p3, what is that? i just tried playing black ops and the core clock did not jump up while playing.