******Gigabyte GA-P67A-UD4 Discussion Thread******

[jumper2high]

Having PLL override enabled causes a MUCH bigger chance of a boot loop or a power down/power up after shutting down from windows, or changing a setting than having it disabled. It's also difficult to make an overclock setting "stick" with PLL override enabled, even at known stable settings, without getting a failed OC or one loop. This is probably why GB doesn't have it in their official bioses.

In over 30 restarts, I haven't had a single boot loop after changing bios settings (though I think BCLK change causes a power off) or after a restart from windows, with PLL override disabled.

Could be - but, NOT having PLL Overvoltage guarantees the overclock won't go past 4.5GHz. I had it fully stable at 4.9GHz on an Asus board, then I took the GA board for a spin and had nothing but disappointment from that point on.

EDIT: Flashed F8b bios - after a few quite random restarts and powerdowns, finally able to boot into windows, I restarted and set 4.8GHz with a slightly higher voltage than on ASUS (was 1.33 on Asus, put 1.345 on GA) and it still kept coming up with an error after several minutes of prime95.

Sad to admit, but first chance I get, I'm putting back the Asus board in.