I'm running 2x 512mb Buffalo Modules on an A7N8X Deluxe at 11-2-2-2 @ 200mhz, and 2.75 volts, seems to work fine I have CH-5 chips too, I've gotten it to work stable at 11-3-3-2 @ 229 mhz, and around 2.85 volts (max voltage my board supports by default it overvolts some) , but I had to lower the multipler on my CPU and wasn't really comfortable running my ram w/ voltage that high for a long periods of time, so I just set everything to 11x200 and and played it safe =), still only running an Sk-6+ w/ 50.2cfm fan so I don't think I can push my processor to much farther w/ that kind of cooling, but so far I've been very impressed w/ Buffalo's ram