Gigabyte Z77 Overclocking Guide
Published: 26th February 2013 | Source: OC3D | Price: |
As we know from the above that our CPU can handle 3.9GHz perfectly well (as seen from the Turbo mode) then 4GHz isn't much of a stretch. However, it's a great number psychologically, and because it's not something you get as default but have to do manually, then you have performed your first overclock.
To reach these dizzying heights we've simply disabled the Turbo Boost, so that the chip runs either at the low-power state or our overclock, and adjusted the CPU Clock ratio to 40. Yes we know that sounds too easy. It isn't.
We aren't surreptitiously tweaking things behind the scenes, or giving you a "to play the flute simply blow in one end and move your fingers up and down" reduction of a complicated act to an 'as you know' simple statement.
Just turn off Turbo, set to 40. Tada. Or if you're on an alternate CPU to our model, set your CPU Ratio to one higher than the default Turbo speed was. Run OCCT for an hour until you're sure it's all gone well, and then move on to the next step.
4.4GHz and Voltage Increase
For the purposes of brevity we've skipped a couple of steps in our images. What we did was, as our 4GHz overclock proved stable, returned to the BIOS and solely increased the CPU Ratio (multiplier) from 40 to 41. Then saved the BIOS, rebooted to Windows, loaded OCCT and tested for an hour to ensure stability. We continued this process until, at a ratio of 44, the system failed. Returning to the BIOS, we entered the voltage section and solely changed the CPU vCore from 1.13 to 1.18. 0.05v isn't much, but enough to pass OCCT testing.
You might need more, or less. That's the difficulty with overclocking. You should never follow a guide in a "put this number here" way, because all of our components are different. Some of you might have needed more volts to reach a multiplier of 41, and some of you might have reached our 44 ratio still on the default CPU voltage.