$1500 Gaming System Build, Please Give Your Opinions!

Hello everyone!
I've been wanting to build a desktop for the past few years now, and I decided to spoil myself as I get ready to go off to college and blow (invest) much of my cash on a sweet gaming rig. A few weeks ago I found tomshardware.com, and after going through... a lot of articles, in addition to reading the forums and searching other websites, I came up with this build:

https://secure.newegg.com/WishList/ [...] 3581a70344

That should work, I made the Wish List shared.

I'll break it down here, though (prices include mail in rebates, and are rounded):
2- GTX 280: $450
1- XCLIO STABLEPOWER 1000W Power Supply: $150
1- OCZ Gold 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 2000 Triple Channel Kit Desktop Memory: $110
1- LG 22X DVD±R DVD Burner: $23
1- Antec Three Hundred Black Steel ATX Mid Tower Computer Case: $60
1- EVGA E758-TR 3-Way SLI (x16/x16/x8) LGA 1366 Intel X58 ATX: $270
1- Intel Core i7 920 Nehalem 2.66GHz LGA 1366: $280
1- Seagate Barracuda 7200.11 750GB 7200 RPM SATA: $80
3- IPCQUEEN IPC-12025 120mm Case Fan: $11
Total (including mail-in rebates and shipping): $1459.52

So, I'll explain the parts I chose and why I chose them.

Graphics Cards:
For $225 a pop, I really couldn't resist the idea of having two of them in SLI. I will be playing FPS games, among other things, at 1920x1200, and I would really love to have all the fancy effects on (AA, etc.). I am planning on overclocking them somewhat (I am planning on overclocking much of my build, actually), so they should be quite potent.

Power Supply:
Alright, so for calculating the size of the power supply I would need, I drew from a few sources. I saw from a few articles on tomshardware.com and on other sites that two GTX 280's in SLI drew, at the most, 575ish watts. I was planning on overclocking the I7 to 3.3ghz, which, according to the article here, drew a peak of 251 watts. I called eVGA, and the representative told me the mobo would draw a peak of 50-60 watts (that would be including the ram, I believe). The hard drive will draw a peak of 7 watts, and I have no numbers for the DVD drive. So, that gives me a peak draw of 900something watts. Now, seeing this, I wonder if I could afford to go down to a 950w power supply, or if I should just play it safe with the 1000w. If I were to go to the 950, I could save $30 and buy this: http://www.newegg.com/Product/Prod [...] 6817182096

Ram:
I wanted 2000Hz. This was the cheapest option in a 6GB format. I admit, not much thought went into this one...
A question, actually. The rep I talked to said that the only way that I could use more than 1600Hz was if I overclock my CPU (which I was planning on). Why is that?

DVD/CD Drive:
It had good reviews, it was cheap, the same specs as the DVD drive that is recommended by this website (the one they recommend is a few bucks more ).

Case:
I chose the case largely based on the review given on this website. I also liked the three fan bays, and the way it opens up. And, it wasn't too expensive.

Mobo:
Again, I used tomshardware.com's article on the $200-$300 I7 mobos. I wanted a card that could have two cards with space between them, so it was this one or the DFI LANPARTY DK X58-T3eH6. However, the iffy reviews on newegg.com made me lean torwards the one I selected. However, if you have experience with the LANPARTY mobo and recommend it, please let me know!

Processor:
Going into this, I knew I wanted an I7. And I knew I wanted to overclock it. I will be trying to overclock it to either 3.3 GHz or 3.6 GHz.

Hard-drive:
It was the cheapest hard-drive I found that went at 7,200 RPM and was of a sufficient capacity for what I need.

Fans:
They were the cheapest fans, they have many good reviews, and the numbers seem good.



So, that's my build. Any advice or comments are appreciated!

And, I guess I should ask. As I see this now, I wouldn't mind taking the price down a bit. Would you all recommend going with an AMD processor an overclocking it to save some dough?





Edit: I forgot to follow the rules

APPROXIMATE PURCHASE DATE: Next two weeks

BUDGET RANGE: Ideally, it would be around $1200. However, it seems that if I want to go with the I7 and the two GTX 280's it will be $1500.

SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, Internet, CAD, Word Processing

PARTS NOT REQUIRED: Mouse, Keyboard, Monitor, Sound System

PREFERRED WEBSITE(S) FOR PARTS: None. I used newegg.com, but I have no real preference.

PARTS PREFERENCES: None. Will buy a part based on its merits.

OVERCLOCKING: Yes

SLI OR CROSSFIRE: Yes

MONITOR RESOLUTION: 1920 x 1200

^ +1
Very nicely put...

i think too that both have the same performance but i read somewhere that 2x4890 scales more in 1900x1200 and higher resolutions

My replies are in red. Thanks for the advice!

Well just a point about the HDD...
The WD Black 640GB are newer are more efficient than the 750GB ones...
So you might want to change them...
If you dont want to loose that extra capacity, then get this -
Western Digital Caviar Black WD1001FALS 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive

And as for your power supply issue, the 850TX is more than suffice for that setup...
You should take a look at this...Just select the components and click on calculate...
http://extreme.outervision.com/PSUEngine

That PSU is actually an overkill...for HD 4890 crossfire even a Corsair 750TX is suffice...

Go with a 1000W PSU only if you are going to add one more HD 4890 in tri-crossfire...
And as for your PSU I would get a better quality than that...the Corsair 850TX would be a better alternative than that PSU...

Alright, I'll go with the Corsair PSU.
How are Rosewill PSU's? They are $30 less for 850w.

And 640GB of storage is fine, I switched that as well.
Now what should I do about the ram?

rosewill! hearing only the name of this company makes me vomit,they are crappppppppppppppppppppp everything made by rosewill is crappppppp as for the ram get the ocz platinum 1600 with 7-7-7-24 because they will run at the 1600 with the timing listed as for the ocz 1866 it has many problems in running at 1866 as you see from the reviews

Edit:the 750 will do the job fine but go with the 850 to feel safe and there isn't a huge difference in price