Quote Originally Posted by tbone8ty View Post
i just recently install 2 x 1 gb corsair 1066 sticks...so now i have 4 x 1gb running at 1066...its running stable at 5-5-5-15 timings

make sure u set dram voltage at 2.1V or 2.2V and gotta up the NB volts to 1.35+ for stablility....my cpu is at 3.1
but are you sure it is actually running at that speed? i don't believe the memory controller can handle 4 sticks at 1066 with stock timings. it could just be displaying what speed you set it as but its not actually running at that speed in all 4 sticks.