1500 gaming PC

Hey, I currently have a dinosaur that i'm gaming off of and it is starting to really show. Lets just say....its single core and AGP graphics...

I am currently pricing and going over reviews for my new build and I am hoping y'all can help me out. I wont be buying any parts till September time frame and I want to be done with this build by December.

Here is what I have now.

ASUS P6T Deluxe V2 LGA 1366 Intel X58 ATX Intel Motherboard - Retail
http://www.newegg.com/Product/Prod [...] 6813131365

Intel Core i7 920 Nehalem 2.66GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor - Retail
http://www.newegg.com/Product/Prod [...] 6819115202

SAPPHIRE 100270SR Radeon HD 4850 X2 2GB 512-bit (256-bit x 2) GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Retail
http://www.newegg.com/Product/Prod [...] 6814102809

ZALMAN CNPS9900LED 120mm 2 Ball CPU Cooler - Retail
http://www.newegg.com/Product/Prod [...] 6835118046

COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case - Retail
http://www.newegg.com/Product/Prod [...] 6811119137

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 - Retail
http://www.newegg.com/Product/Prod [...] 6817139007

CORSAIR XMS3 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Triple Channel Kit Desktop Memory Model TR3X6G1333C9 - Retail
http://www.newegg.com/Product/Prod [...] 6820145220

2 X Western Digital Caviar Black WD5001AALS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive - OEM
http://www.newegg.com/Product/Prod [...] 6822136320

I'm going with the 920 because its cheaper then the rest and I can easily OC it. I already have a DVD/CD rom, keyboard, mouse, headset and monitor from my current computer that I can use in this build. My price range has a threshold of about +/-300. I will also most likely be using this computer for my programing needs as well.

What OS would y'all use? I currently run XP but am wondering if I should try out windows 7 with this machine....thoughts?

And ATI would most likely launch newer graphics...
http://vr-zone.com/articles/amd-pl [...] l?doc=7173

Hmm...the i5 that intel would be releasing are for the mainstream market, so they would be priced cheaper than the i7 line...
And there are talks that the fastest i5 would replace the i7 920 because they fall in the same price range...and intel might discontinue the 920 by then as we can see that intel has released the newer revisions of the i7 940 and i7 965 as i7 950 and i7 975 but no replacement for the i7 920...
Hopefully they dont discontinue the 920...
And as for the graphics, keep your options open till the last minute because newer cards are expected and they will not only be for the high-end segment...

So the things you can plan are the CASE, PSU, CPU Cooler, and maybe the Harddisks and DVD drives...

And looking at you selection especially the PSU , it is way overkill for your setup...
A Corsair 750TX can handle GTX 275 SLI with an overclocked i7 easy...And if you still want little more headroom, then the 850W is max required...
The Corsair 1000HX is only required for say dual GTX 295 SLI...

As for the RAM, they are slow...Plan on getting DDR3 1600MHz above...preferrably with lower CAS - And by the time you buy, their prices would certainly drop...

The CPU cooler that you have chosen is way overpriced for the performance that it gives...
Get the TRUE eXtreme 1366 RT CPU cooler for that price...It is one of the best coolers for the i7...

The case is a very good one...If you want more spave, then you can look into the CM HAF Full tower...

And actually for your budget, you can get a very powerful PC with dual GTX275/ HD 4890 now...