I have it at 3.8 right now @ 800 fsb with 1-1 ratio. Perfectly stable. I also have 2 gigs of corsair @ 4-4-4-12 timing with a P5Q-Pro. I managed to get my setup at 4.5 before with corsair domintor ram and heavy voltage increase but the ram was my friends. Right now I cant get this crap ram over 3.8... Can't do anything. I do all the goodies on my mobo to setup the overclock but anytime I increase past the 800 mgh limit of my ram it crashes. I changed the timing to 5-5-5-15 and even 6-6-6-18. 6-6-6-18 appeared stable at first but crashes within 5 minutes of stress test. I know its my ram because firefox always gets memory errors too... Did I just get crappy ram or what? I am supposed to run this @ 2.1 volts for 4-4-4-12 timing I brought it up to 2.3 for 6-6-6-18 and it still crashes. Any ideas? There is no fsb/dram config on my mobo so it automatically inputs a ram timing to match my fsb to maintain a 1:1 dram/fsb ratio. Any suggestions will be welcome to get over this ram hurdle.