3770k z77 multiplier change isn't increasing clock speed

wp746911 · Aug 23, 2015

I have a GIGABYTE GA-Z77X-UD4H LGA 1155 Intel Z77 with a 3770k cpu. I am trying to overclock it (have had it as stock for a long time). I have turned off turbo, and go to increase the multiplier. I bump it up to 40 but it reads as only 3.5ghz (cpu id and bios). Doesn't appear to increase the multiplier ? What am I doing wrong? It's acting like it won't let me change the multiplier? See photo link below:

wp746911 · Aug 24, 2015

Well this is annoying. I reset the bios and it'll boot at 3.5 ghz with 3.9 turbo. Verified under cpu id. I change the multiplier to 40 and it work- verified under cpu id. But now it I go to change the mutliplier from 40 to 41 it won't change. Still shows 40 under cpu id. It is saving the changed value, but not really changing it. So some bios changes will take, but others won't. Is my motherboard bad somehow?

barto · Aug 24, 2015

Have you tried updating the BIOS on the motherboard?

wp746911 · Aug 24, 2015

worked! Well sort of- I couldn't update it b/c it already had the latest firmware- but I reflashed the same firmware and it's working perfect- thanks!

barto · Aug 25, 2015

Glad to hear it worked. Make sure to read up on a overclocking guide. Don't aimless apply a vcore to a frequency. It's a process to find the minimum voltage for the highest attainable frequency.

http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end
http://www.anandtech.com/show/5763/undervolting-and-overclocking-on-ivy-bridge

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3770k z77 multiplier change isn't increasing clock speed

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