I'm building a PC for the first time so I need to know whether the parts that I've ordered/am going to order are compatible. Just some background to this, I've bought all of the parts apart from my CPU and my GPU which I (should be) ordering tomorrow, but the site that I used to reference seems to have run out of stock of the graphics card I wanted so I can't really use it to check compatibility which has got me worrying. The site in question is http://www.pcspecialist.co.uk/computers/intel-sandy-bridge-pc/. So er yeah, will these parts that I've bought/am about to buy work together?
Intel Quad Core i5 2500k 3.3Ghz (not bought yet)
4GB AMD Radeon HD6990 (not bought yet)
16GB Kingston Hyper-X Dual-DDR3 1600Mhz
Asus P8P67 LE Rev 3.0
Titan Fenrir Evo Extreme heatpipe CPU cooler
1TB Caviar Green WD10EARX
Corsair 750W Enthusiast Series
Titan Fenrir Evo Extreme CPU cooler
X-Fi Titanium - Fatal1ty Champion Series
Also, what would be the limiting factor when it comes to the performance of the PC? I am considering overclocking the i5 2500k because from what I've seen, the HD6990 tends to be paired with an i7.
Intel Quad Core i5 2500k 3.3Ghz (not bought yet)
4GB AMD Radeon HD6990 (not bought yet)
16GB Kingston Hyper-X Dual-DDR3 1600Mhz
Asus P8P67 LE Rev 3.0
Titan Fenrir Evo Extreme heatpipe CPU cooler
1TB Caviar Green WD10EARX
Corsair 750W Enthusiast Series
Titan Fenrir Evo Extreme CPU cooler
X-Fi Titanium - Fatal1ty Champion Series
Also, what would be the limiting factor when it comes to the performance of the PC? I am considering overclocking the i5 2500k because from what I've seen, the HD6990 tends to be paired with an i7.