Originally Posted by werdna35
i didnt even know there were tri channel cpu's
I believe he was refering to the RAM and that point.
For a reccomendation on graphics card, a good mid-end GPU from ATI would be one the new 6000 series and for Nividia the GTX460. you can pick one of these up for about £150-£200 (sorry about the pounds)
If thats a bit of the your price range i'd look at the 5000 series from ATI, the 6000 series has only recently been relased and the 5000 series should start to drop in price.
I agree with abstracts comment above for the RAM it's probaly best to keep it in 2's for dual channal, and 3's for tri channel. another way to think about it is if it's dual go up in 2,4,6 and so on and for tri go for 3,6,9 etc.
on that budget it would probaly be best to go for dual chan.
CPU: alot of it does come down to perosnal choice but if i'm not mistaken early 2011 intel are releasing a new processor range and this will probaly drop the price down on some of there current ranges out if your willing to wait that long.