Originally Posted by Redbeard
I'm not familiar with the CAS4 issue you're mentioning. We've got them running in the labs at CAS4 at 1000+, sometimes higher, though I can't really give out too many details on that. My suggestions with these ICs for best performance so far:
-Active cooling, these things get hot, especially with 2.4V (or more, if you're a crazy voltmodding lunatic like some of you guys, I hope you're wearing goggles for when these things burst into a billion pieces from heat)
-High voltage
-Keep an eye on tRCD, unlike the older fatbodies, where you could run 3-2-2 almost as fast as 3-3-2, these ones are much more susceptible to the tRCD being the limit. We see 4-5-4-12 hit almost as high as 5-5-5-12 with the same voltage. If I was trying to hit 1100, I'd be at 4-5-4 and 2.4 (or higher) volts.
We use the P5WD2-E board with a 955 processor and air cooling on the northbridge, 0401 BIOS, and we test everything internally at 2.2V. We also use RST Pro2 cards for stability testing, which correlate pretty well to Windows stability.
If you want shots of our BIOS settings for our internal testing I can take those later, but I've got lunch to eat right now.