Sorry if this is long but here goes, last year I had my 6 year old pc updated by a local shop to a dual core pc. Its had a ASrock G31M-VS2 mother board with an intel e3300 2.5ghz processor & 2gb geil ddr2 pc2-6400 ram which i bought another 2gb matching and installed. I installed a Radeon HD 4350 card (don't do gaming just for photo viewing and edits) which is great with my benq led monitor. recently upgraded my psu from 250w to 500w. I have overclocked this to 3ghz which has made everything so much more responsive. never goes over 44c when under load video coding etc, 35c normal tasks. My dilemma is this, I used the crucial memory program which said I could use a pc2-8500 1066mhz. So purchased a pair of 2gb corsair dominator pc2-8500 (not arrived yet), now found out my board is 800mhz, will the ram slow down to this or will they not work at all? also bought but not received yet is an intel e6700 3.2ghz 45nm processor, is it worth changing my e3300 for this or sell it on and today bought the artic freezer pro rev2. any suggestions, help is much appreciated.