What monitor size/resolution will you be running on this?
if it's only a 17" or 19" then consider downgradeing the graphics card to a 9800gt 512mb
if 20" or more then the 9800gtx+ is a good option, however also look at the ati 4850
http://www.scan.co.uk/Products/512MB...xDL-DVI-I-HDTV
Wow scan seems to be out of stock on a heck of a lot of graphics cards.
On the CM690, it's a very nice case, shame the version with the side window is slightly better, but you cannot seem to get hold of them now
they do sell the windowed side panel seperately, the advantage it has is a far better mesh/vent for the side panel fan.
http://www.scan.co.uk/Products/Coole...for-CM690-Case
although again not in stock
You will want to consider getting a couple of 120mm or 140mm fans to put in the top
Depends if you want glowy led fans or not but these should be very good
http://www.scan.co.uk/Products/140-S...-900rpm-22db(A)