Put in 2 new dual channel kits of 4 GB of Kingston HyperX KHX6400D2B1K2/4G (maxed at 8GB). Kingston Specs Everything looks right in PC Wizard / CPU-Z, except for tRAS timing. Per Kingston specs, at 400 MHz (which it's at), timings at 1.8 v should be 5-5-5-15, not 5-5-5-18. 1.8v is the spec on this mobo & was the voltage of the OEM RAM (however, their specs were 6-6-6-18). This is an HP OEM Asus board w/ no clock settings in BIOS. I'm not sure why everything looks OK except the tRAS timing.