[Solved] $1000ish Gaming PC

Hello everyone,

My previous desktop has been broken for weeks now. (After multiple RMA'd video cards, motherboards, etc., I've given up fixing it.) I've been making do with my laptop, but it's useless for gaming and I'm finally bored enough with not gaming that I figure it's time to build a replacement. On with the build.

APPROXIMATE PURCHASE DATE:
Next week or two. I'd be willing to wait ~1 month if with the Fermi graphics cards coming out there could be any substantial drop in prices (> $50 or so). I doubt there will be that big a drop in the near term, though.

BUDGET RANGE:
$800-1000 or so for the parts that I need. I can cannibalize some parts from my decrepit machine.

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT:
Besides the basic stuff, mostly gaming.

PARTS NOT REQUIRED:
Don't need anything external. Have speakers, peripherals, monitor, etc.

From my existing machine, can cannibalize:
- Optical drive
- Power supply (Corsair CMPSU-850HX I bought when I thought maybe PSU issues broke my previous computer)
- Wireless 802.11n PCI-E card

PREFERRED WEBSITE(S) FOR PARTS:
All the usual, Amazon, Newegg, Zipzoomfly, Buy.com, etc. Unfortunately I live in CA so I have to pay ~10% sales taxes for Newegg & Zipzoomfly which makes them not as cheap as they are elsewhere.

COUNTRY OF ORIGIN: USA

PARTS PREFERENCES: No brand preferences--whatever's the best value.

OVERCLOCKING: No

SLI OR CROSSFIRE: I would not buy one video card now and then add another later--either SLI/Crossfire to start or not at all.

MONITOR RESOLUTION: 1920x1200

ADDITIONAL COMMENTS:
I would prefer a quiet PC, even if it needs to be slightly slower as a result (e.g. no overclocking so fan RPMs can be lower). Doesn't have to be silent but the quieter the better.

Here's what I have found so far... I am sure you'll have many suggestions for improvement, though.

Motherboard - $142
ASUS P7P55D Desktop Motherboard
http://www.provantage.com/asus-p7p55d~7ASUS1UU.htm

Case - $80
Cooler Master Centurion 690 ATX Mid Tower Case Black
http://www.amazon.com/gp/product/B000V95YOC

CPU - $200
Intel Core i5 750 Processor
http://www.amazon.com/gp/product/B002KQ5KDY

GPU - $320
XFX Radeon HD5850 PCIE 1GB
http://www.provantage.com/xfx-hd585aznfc~7PINE0HR.htm

OS drive (will reuse my big storage drive from old PC) - $55
Seagate Barracuda 7200.12 500 GB SATA 16 MB
http://www.amazon.com/dp/B001VKYA5E

CPU cooler - Is stock good enough? How loud is it?

Memory - Not sure what to pick here. Any recommendations?

Total: $797 + memory = ~$900?

The Cooler Master Hyper 212+ can overclock your i5 to past 3.6GHz easily, so have reached 4GHz, and would be probably be of the same sound level. If you're not overclocking, you might be able to use it passively, and that would mean it'd be silent. As for the case - well, it's $35 cheaper and has really good airflow. The case fans aren't going to be loud at all AFAIK.

Lol, all the parts match in terms of colour too, so it would look good, if you do care about aesthetics.