I've recently purchased this rig through ibuypower. I should have built it myself but I just went ahead and did it anyways. I did my homework on most of the parts but I think I messed up on the power supply and I'm wondering how bad off I am. Here is my setup:
1 x CaseCoolerMaster HAF 922 Gaming Case - Black
1 x ProcessorIntel® Core™ i5-2500K Processor (4x 3.30GHz/6MB L3 Cache)
1 x Processor CoolingLiquid CPU Cooling System [SOCKET-1155 & 1156] - [Free Upgrade] Standard 120mm Fan
1 x Memory4 GB [2 GB X2] DDR3-1333 Memory Module - ** FREE Upgrade to DDR3-1600 ** Corsair or Major Brand
1 x Video CardAMD Radeon HD 6950 - 2GB - Single Card
1 x Video Card BrandMajor Brand Powered by ATI or NVIDIA
1 x MotherboardGigabyte GA-P67A-UD3-B3
1 x Power Supply750 Watt -- Thermaltake TR2 TRX-750M
1 x Primary Hard Drive1 TB HARD DRIVE -- 16M Cache, 7200 RPM, 3.0Gb/s - Single Drive
1 x Sound CardCreative Labs Sound Blaster X-Fi Xtreme Audio
1 x Operating SystemMicrosoft Windows 7 Home Premium + Office Starter 2010 (Includes basic versions of Word and Excel) - 64-Bit
I didn't research the psu beforehand- My thinking was instead of going with the 700w standard option I'd go one up with a named brand 750. After the fact checking out reviews I see this power supply can become unstable around 600 some watts. Does anyone know how worried I should be with the components I have?
I was planning on overclocking the cpu just around 4.6,7 so nothing crazy since I've never overclocked before.
The power supply is the most important component in the system. It was good because you chose a name brand, though the make/model combination is less than ideal.
Theoretically, based on the spec, this power supply should run everything in your system just fine and is an 80-plus bronze-rated. Though, as you've mentioned, the reviews on it show some flaws. The good thing is your system probably doesn't reach the 600W mark (the estimated instability mark in the reviews). Something like that does not give you a great feeling about the component everything else in your system relies on, though.
If you OC the processor by ~35% as you're suggesting (even though you don't think so, this is pretty substantial), you should consider a different power supply. A Corsair AX,TX or HX 750 or above should suffice for OC'ing and should outlast your system.
So, unless you're OC'ing, it's not absolutely necessary for you to look at putting a better supply in there, but you should consider doing so either way for the sake of the longevity of your system components.