For those of u that are disappointed in your x2 clocks you may try breaking em in awhile before u judge the chip fully. I ran my Toledo 4600 at default volts 2750 b/c it wasnt terribly stable much higher but the just recently i did a ram swap for awhile, ended up going back to the old rams but in the process tried pushing the cpu a bit and sure enough im over 3gig with ease .