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I am trying to OC my 2500K on my MSI Z77MA-G45 board. The problem I am having is the BIOS shows CPU at 4.0ghz (Multiplier at 40), but CPUz shows multipier at 33 and 3300mhz. I have EIST off, turbo boost off, Power Technology off, C1E off and Overspeed Protection off. I ran Prime95 and it stays at 3.3ghz. I am confused. Thanks

I have alot of alcohol in me atm, but perhaps you have a bad bios or even motherboard, try reflashing bios or rma motherboard:)

Actually, sorry, just clicked on your mb and the link to msi site and it does not show support for 2500k.

http://www.msi.com/product/mb/Z77MA-G45.html#/?div=CPUSupport

I did not even think that compatibility would be an issue. Sheeeeeet!! I wonder if a BIOS update is coming. I hope. Thanks Credible for pointing that out.

Woah, seriously? Z77 is supposed to completely support Sandy Bridge. Either MSI messed up the manual or they /really/ messed up the motherboard.

maiden4life wrote:

I am trying to OC my 2500K on my MSI Z77MA-G45 board. The problem I am having is the BIOS shows CPU at 4.0ghz (Multiplier at 40), but CPUz shows multipier at 33 and 3300mhz. I have EIST off, turbo boost off, Power Technology off, C1E off and Overspeed Protection off. I ran Prime95 and it stays at 3.3ghz. I am confused. Thanks

Well, that's your problem. When overclocking a 2500K, you modify the turbo multipliers, not the base ones - the base ones are locked, the turbo ones are unlocked. Turn back on Turbo! Oh, and I'd recommend turning back on all the things you turned off, while you're at it.

Well, that's your problem. When overclocking a 2500K, you modify the turbo multipliers, not the base ones - the base ones are locked, the turbo ones are unlocked. Turn back on Turbo! Oh, and I'd recommend turning back on all the things you turned off, while you're at it.

That worked! I was always use to changing the base multiplier and forgot about the turbo frequency multipliers. Thanks!