My question is this. I have been reading mixed reviews of the X38 chipset. I understand that SLI is not currently supported, only crossfire. This doesn't really concern me as I only play to be running 1x8800GTX. What chipset would you buy if you were upgrading now and would you go for DDR2 or DDR3 as both the P35/X38 chipsets seem to support both depending on which board you buy.
Next, I am still better off buying a faster dual core than a slightly slower quad core? Bare in mind this rig will be used primarily for gaming.
Lastly, the RAM i have gone for runs at 1066mhz, but the board and the cpu run at 1300mhz. I assume this isn't going to be an issue. I have been told it is a waste of time buying anything above 800mhz atm? I will be upgrading to 4gb (4x1gb) in about a month.
Lastly, have the components I detailed above known to be compatible with each other?
If you arre not planning on going with SLI/Crossfire I would go with the P35 chipset. X38 motherboards and DDR3 are very expensive at the moment.
I would go with the quard core processor with the future in mind.
DD2-1066 is fine, if you are planning on upgrading to a higher processor in the future or overclocking heavily.
What you listed is compatible.
If you are planning on going with 4 GB of memory, I would go with Vista 64 bit.
GA-P35-DS3R or Asus P5K Deluxe
2x2GB DDR2-800 (PC2-6400). Corsair is a good brand, sure. Get 4 GB because Vista will benefit. Get 2x2 and not 4x1 because eventually you'll want 8 GB and this way you don't have to throw out the existing memory to free the slots.