Quote Originally Posted by ReaperX View Post
Hello...

I have 4x1gb ballistix tracer 1066 on maximus with 0903 bios and Vista x64 installed.

I tried most of the settings posted in the thread but I'm having big problem with ram overclocking..(Anything other than stock ram speed results in memtest errors or os bsod).
I was running 4 x 1 GB sticks of two different brands, two Corsair TWIN2X2048-8500C5 and two Crucial Ballistix BL2KIT12864AA1065. They were both DDR-1066 and I ran them at 5-5-5-15 @ 2.2 V.

Currently I am running 8 GB of RAM, 4 x 2 GB of OCZ OCZ2N800SR4GK (DDR-6400 running at DDR-1066). I couldn't run these at their specified rating of 5-4-4-15 without tweaking the northbridge and DRAM voltage.

With my 4 x 1 GB setup, I had northbridge at 1.39 V and DRAM at 2.2 V. With the 4 x 2 GB setup, I had to increase the northbridge to 1.55 V and DRAM was fine at 2.2 V (2.12 V in the BIOS, but the board overvolts).

The OCZ were finicky. I couldn't get them running when manually setting the 5-4-4-15 timings and I had to set them to auto. After testing over the weekend, I found that some of the sub-timings had EPP values higher than what I could manually set in the BIOS.

I hope that helps, good luck with the overclocking.