I am running an unlocked Amd 2500+ with an Asus A7N8X Delux rev. 2.0. Right now I have 2 sticks of Kingston value 256 PC2700 and a stock cpu heatsink and fan. As soon as I hear from some of you peeps I will order Thermalright ''SLK900A''Copper Heatsink, Vantec"Tornado"Double Ball Bearing Cooling Fan 92mm, and Mushkin Lvl II dual pack PC3500 1GHz(2x512). The PC3500 is cheaper than the PC3200. I just want to make sure that I get non a- Bh-5 chips so I can OC the **** outa it. My main question is will the memory like being underclocked if I don't run it at DDR433? I also don't know where to find out if this memory is Non a. I welcome any comments or suggestions . Thanks .