Hmmm. Time for some adult leadership here.
I have a G0 Q6600 in a G'byte GA-EP45-UD3L motherboard with 4 GB of Crucial Ballistix running at 3.6 GHz (400 MHz X 9). VID is 1.2625 volts (about average) boosted to 1.425 volts drooping to 1.42 volts. Load temps are 61 - 66 C with a Xig Dark Knight in an Antec 900 case, fans on Low. System is 24 hour Prime95 stable in both small and large fft's.
Comments:
bactrian:
Your recommendations are pretty good. A Q6600 is pretty easy to overclock. Most will run at 3.0 GHz with very little tweaking - set FSB:RAM ratio to 1:1 however your motherboard does it, boost FSB freq to 333 MHz, and increase cor
voltage a little if you need to.
Computerrock1:
You have the FSB:RAM ratio backward. I think you mean 2:1 which means running the memory at half speed. Not a bad idea. It removes the RAM from the overclocking equation.
fulle:
Yes. running at 1:1 is more stable. OTOH, running faster increases performance little if any. For overclocking a Q6700, see my comments for bactrian.
If you have a Gigabyte motherboard, this is also very good:
Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/forum/page-245679_11_0.html
It's for an EP35-DS3L but all the Gigabyte Core2 BIOS's are similar.
I set Loadline Cal to whatever works. I have three OC'd Core2 systems. I enabled LLC on two. I turn off SpeedStep until I have a stable overclock, then I turn it back on.
PCIe bus has it's own independent clock. It won't increase with the FSB frequency.
clubf00t:
Leave the PCIe bus alone. It can cause all sorts of strange problems - including data corruption on the hard drives.
Like fulle, I use RealTemp and Prime95 to test for stability. The small fft's test runs in the CPU cache, so it presents little problem for the memory. If it fails, it's a sign that there's something wrong with your CPU settings. The large fft's and blend tests shuffle data to and from the memory. If either of these fail, look at your memory settings. You can try to increase your RAM voltage (don't exceed 2.2 volts), relax your memory timings, or run your RAM slower than your FSB freq.
andrern:
Settings from 266*9 to 400*6. No. The processor core is still running at the same speed. But you have no idea what everything else is doing. Best thing to do is what all the guides say: set CPU multiplier to max and FSB freq to stock, then increase the FSB freq.
aberchonbie:
The problem with Auto voltage settings is that they tend to run the voltage higher than necessary. As with all overclocking, YMMV. Not all Q6600's can reach 3.6 GHz with stability. I had my Q6600 initially in a G'byte P35 board, then a G'byte P45 board.
If you notice, you had a total of more that 370 people look at this thread, and most decided to stay away. And after following all this, you know why the regulars here tell everyone, "One problem, one thread."