No to all, i'm just limited by temps at the moment the DS4 will go t0 500mhz Sys bus or possibly more. The Geil will do 1000mhz as well. Most of the E6600 chips should be capable of 3.6ghz but some will do more than 4ghzMassive Attack said:i have the geil and was wondering on your overclock of the 6600 are limited by the chips ability to overclock or is it the fsb or ram as i was hoping to get 3ghz out of my 6300 on the DQ6