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Core clock multiplier keeps changing for some strange reason.

Last response: in Overclocking
April 29, 2012 8:14:01 AM

System specs;

CPU: i5 2500K (multiplier 44x)
Ram: Kingston, 2x4 8GB HyperX (
VC: XFX Radeon 7770 Black Edition OC

Here is 3DMark2011;

I'm not sure what is going on here.

According to CPUID the multiplier is 16x when idle but when I run prime 95 the multiplier changes to 44x. The bus speed is also listed as 100.3, but in the bios it is listed at 100.


When I am in the Bios, if I disable c3/c6 option, windows never boots and my system keeps restarting itself.

Has anybody else experienced this? I'v checked all the ram settings, they seem fine.


a b K Overclocking
April 29, 2012 9:52:14 AM

Probably an energy saving feature enabled on BIOS.When at idle it slows down to save power.