New to i7 platform and I've been looking through the Gigabyte thread as well as the D0 thread. I am looking for some BIOS setting templates so I can get a good idea where to start playing with the oc. My goal is somewhere around the 4.2-4.4 area.
naokaji
04-29-2009, 03:59 PM
First off your mileage can and will vary.
There are chips that can do 4.4 24/7 stable and there are some that will crash with any load exceeding that of Cpu-z.
Anyway, here some settings to get you started, they got me to 4 (before turbo, so 4.2 with it):
Cpu Features:
Diable everything except the following: Turbo, Cpu Cores, Multithreading
QPI set it to x36
Uncore multi will depend on ram speed, example: if you have 200 bclk and the ram at 8 multi for 1600 you would have to set it to x17 (ram multi x2 +1)
Performance enhance, Extreme can be a bit tricky to get it to work at high clocks, set it to Turbo for the time being, standard doesn't really help, once you have a stable oc try to raise it back to extreme.
Ram timings, just put it to whatever your ram is rated for, I'd oc the cpu first, then if it's stable add ram clocks (ram speed is not really important for I7 in real world performance).
Loadline Calibration: Enabled
Vcore: this will vary widely from cpu to cpu, I'd start with 1.3, the system will most likely boot, unless you have a miracle chip it won't be stable with any load though, just raise as needed in small steps (up until around 1.4 temps should remain acceptable, above that you will need some serious cooling)
QPI / VTT: My chip loves 1.36, but again, your mileage will vary, start at 1.32 and give it some small bumps until stable.
IOH Core: 1.2
Ram: Don't be scared by the supposed 1.65 limit, that only applies with QPI / VTT voltage at stock, but with that in the 1.3x range up to 1.8V ram voltage is safe.
CPU PLL: Leave it on auto, it does not really have a big effect
PCI-E V: Auto
QPI PLL: This helps a lot, just go straight for 1.3
ICH I/O: Auto
ICH Core: Auto
Monstru
04-29-2009, 04:02 PM
UD5 with D0 works pretty well, I did a little test here - Core i7 D0 (http://lab501.ro/procesoare-chipseturi/core-i7-920-revizia-d0-a-ajuns-in-romania/2).
For higher Uncore and DDR clocks, use the F6 bios. The F4 I have used works with D0 but does not allow Uncore setting or high-ram clocks with this revision.