hi ill be upgrading in next few day but am not really sure what to get at first i was thinking about getting skt 939 3700+ with this DFI NF4 INFINITY SLI SKT939 6 channel audio SATA USB ATX or this DFI NF4 Infinity SKT939 nForce4 chipset Dual DDR400 PCI-E SATA ATX as i have a ati x1800xt not to worried about sli but the fact you can put in a dual core later made me think that the sli board be better.But then i started reading forums and looking about on google i started to think about getting an AM2 x2 3800 or 4200 maybe waste of money getting the 4200 as am sure id be able to over clock the 3800 to 4200 speeds with this motherbaord Asus M2N-E Socket AM2 NF570ULTRA Audio Lan USB2 2000FSB SATA ATX. the thing that is getting me is,is there much a diff with the nf570 to the nf4 sets i hear with the nf570 there are tweaks you can do for pings that makes it better.Wouldnt mind a little help as am not sure which to go for am a gamer so maybe the x2 would be better and is there a way you could use the x2 to use the both cpus for games even thou it dont support it?