For non gaming use, you don't even need anything more than a 500$ rig, and that'll last you 5-6 years.

Sporknife

He's right. If you look closely for good deals and know exactly what you're doing, this is possible.

Gamah that configuration is ridiculous. If you want a good gaming rig you only need to spend between 600 and 1000 dollars (600 doesn't count the monitor). When I started I was like you, I bought unnecessary things and overpriced things. Let's go over each one:

DFI LP UT X58-T3eH8 LGA 1366 Intel X58 ATX Intel Motherboard ($300)

No! The mobo and the cpu are the most important parts of the computer, but don't buy a 300 dollar motherboard. Usually these are for very advanced people (more than me) and for tweaking/overclocking parts on the mobo, which means adjusting the hardware to make it perform better than the factory settings. Check out the Gigabyte and Abit motherboards. Just look at the ratings on Newegg.com. There's some that have won critics choice awards and are in the 70-90 dollar range. Look for those.

Intel Core i7 920 Nehalem 2.66GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor ($280)

Don't know much about the i7s. Since you're building this in the Summer or after, I bet it will be about 250 then. Still I would only spend 130 or less on the processor. Check slickdealz.net for good computer deals. Intel is much more expensive than AMD. I would look at the AMD Phenom II 940. "CORSAIR

DOMINATOR 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory ($166)"

That's cool I guess, but I don't think any high-end PC game today can fully use 6GB of ram. I think most recommend 3. DDR3 ram is pretty good, but very expensive. You'd be better off with DDR2 RAM . Notice how the prices are very different. However, DDR3 will soon be the standard so you would have to wait for prices to drop. 6GB at 166 is a good price nonetheless.

"Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series ($170)"

If you're really into sound, this is very very nice. You gotta have nice speakers to back it up though.

"CORSAIR CMPSU-1000HX 1000W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS Certified Modular Active PFC Compatible with Core i7 Power Supply ($240)"

Too expensive!! Remember that power supplies can fail, and when they do you have to fill out a hell of a lot of warranty information and your computer will not even start. In this area, price doesn't matter as much as reliability. As long as it has a next-to-none failure rate, it's done it's job. Modular power supplies mean you can take the cables you aren't using out of the setup (which makes things look a lot neater). No one really needs those. However, make sure the PSU is powerful enough to power the other parts like a GTX 280. You should only spend 60-100 on the power supply.

"GTX 285"

I can't blame you, but even the 9800 GTX at $140 can max out any game out today (except Crysis maybe). The GTX 260 is under 200 and I believe that's just as good. Overall just know that higher prices don't mean better products, and they may not really increase performance as much as you want it too. You have to go over the parts you want to buy with someone that's really good with computers before you buy them. Trust me, because I've gone through 3 power supplies, 3GB of RAM, and 2 motherboards on the same computer.