Originally Posted by n00b hax
PSU - completely ignore the numbers the mfg's recommend for GPUs. Completely. or divide them by two. If you're going bleeding edge (GHz 7970 edition, GTX 680 Classified), then maybe pay attention, but not really.
You will not need
bigger than a decent 600W PSU for any single GPU card unless you're doing something else crazy. You'd probably be fine with a GTX 690 and a good 600W PSU.
Powersupplies are most efficient around 50% load, so that means to hit 50% on an 850 you'd need to pull 425W DC - my OC'd quadcore and OC'd and Over volted 6950 only pulls 400W at the plug (so the PSU is only putting out 320W or so) while doing insane stress testing. I have a 650W PSU in it (glados in the sig). Normal wall draw is 300W (250W actual power output), while folding (50% cpu load, 100% GPU load).
Motherboard standoffs - little magic bits that keep the motherboard away from the metal case. they come with the case.
Cooling - I mean what are you bolting to the CPU itself? Not case ventilation. http://www.newegg.com/Product/Product.aspx?Item=N82E16819116501
That CPU does come with a cooler, but many of us find that they're louder than we'd like, and if you start OC'ing your K chip (why else would you buy a K chip?), the factory cooler will not be able to handle all the heat. You can certainly start out with it and be just fine, just know that if you plan on OCing, you should plan on upgraded cooling.
That corsair H100i should fit the 650D nicely, and will outperform the stock cooler by far. If you plan on doing things like HD video and maya, the upgraded cooler will make your ears feel better under load as well.Edited by u3b3rg33k - 11/23/12 at 10:05pm