OC 2500K and Z77 Board

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OC 2500K and Z77 Board

Postposted on Fri May 04, 2012 8:36 pm

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
maiden4life
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Re: OC 2500K and Z77 Board

Postposted on Fri May 04, 2012 9:13 pm

I have alot of alcohol in me atm, but perhaps you have a bad bios or even motherboard, try reflashing bios or rma motherboard:)
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Re: OC 2500K and Z77 Board

Postposted on Fri May 04, 2012 9:15 pm

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
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Re: OC 2500K and Z77 Board

Postposted on Fri May 04, 2012 9:42 pm

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.
maiden4life
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Re: OC 2500K and Z77 Board

Postposted on Sat May 05, 2012 6:06 am

Woah, seriously? Z77 is supposed to completely support Sandy Bridge. Either MSI messed up the manual or they /really/ messed up the motherboard.
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Re: OC 2500K and Z77 Board

Postposted on Sat May 05, 2012 7:05 am

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! :P Oh, and I'd recommend turning back on all the things you turned off, while you're at it.
i5-2500k @ 4.5ghz | ASUS P8Z68-V | nVidia GTX780 | 32gb DDR3| 2x SSDs 2x HDD | Antec Solo II | Dell U2713HM
Mentawl
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Re: OC 2500K and Z77 Board

Postposted on Sat May 05, 2012 8:10 am

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! :P 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!
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