Guys I'm no means an avid overclocker, I did purchase a GA-P35-DS3L and a e-2160 chip, I presently have it overclockd at 3.15, with a Zalman fan 9700 running cool, with 2gb of 400Dual channel ram, this is all I can get it up to stable, I just bought 4gb ram dual PNY ddr2-5300 but under this ram I cannot get it to even over clock at all at any setting, so i put back in the 2gb and have it at the above, so question is what is up with this mem??? it cannot be overclock??? did I just waste my monies??? not overclock it does show 4gb in vista premium, thanks for any help.

If you want to overclock more than 3.15 you need better ram.

I would buy this
CORSAIR XMS2 TWIN2X2048-6400C4
http://www.newegg.com/Product/Prod [...] 6820145034

Don't buy that POS memory I had to RMA 3 of them . Below is a much better buy besides it means horny in German or so I've been told.

GeIL Evo One 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory 4-4-4-12
http://www.newegg.com/Product/Prod [...] 6820144119

I had ordered the 1066 from newegg and it got lost on the way here, yeah it was good buy, so I went to bestbuy to see what they had and bought on impulse, gonna see if I can take back and reorder from newegg. yeah I would be happy with the 3.15 with the new ram, but with this 4gb I was not able to over clock the cpu at all, it had to stay at 1.8mhz. and it was slow compared to the 3.15 I had with the 2gb.