I was just wondering if all these are compatible or if there will be any bottlenecks so I'm open to suggestions.
I'll be mainly using the PC for gaming and I would like to do some do some OCing in the future.
ASUS P8P67-M PRO B3 Revision
Intel i5 2500k
ZOTAC GeForce GTX 550 Ti
WD Caviar Black 1 TB - 600 MBps - 7200 rpm
G-Skill 4GB (2x2GB) DDR3 1333Mhz Ripjaws Memory Kit CL8 (8-8-8-21) 1.5V
...Also is this PSU enough Corsair 500W CX V2 PSU
I would not skimp on the GPU ever. Get a Radeon 6870 as it is much better.