1500$ Gaming Computer

May I suggest you look at the How to Ask For New Build Advice sticky thread?  

$1500 will get you ALOT these days if you do the work yourself. For that price you are looking at an Intel i7 920 and all the trimmings. The x58 chipset, which is what supports the i7, allows for both SLI or Crossfire. Just make sure you don't get the cheapy boards that only support one of the other. DDR3 memory in Triple channel is just FAST. Throw some parts up on here and we can help. Pick a case, video card, etc. What games do you play and what res is your monitor?

Gigabyte GA-EX58-DS4

Processor
Intel Core i7 920

Cooler
Thermalright Ultra 120 Extreme

Memory
Corsair XMS3 6 GB (3 x 2 GB) DDR3-1600

Graphics
AMD Radeon HD 4870 1 GB

Storage
Samsung Spinpoint F1 1TB 7,200 RPM

Power
PC Power and Cooling 750 W

Optical
Lite-On DH-4O1S

ok, well when i was planning to build a computer, i had the Q6600 and like a 9800GTX, i havent been up to times lately, so if theres anything better, bang for the buck, would be nice, games i would be playing... Supreme commander, command and conquer, spore, the 9800GTX can definnetely play all these games, good and beyond, but with the fast changing tech i might want something that might last me a bit longer, i picked out the Q6600 because supereme commander is said to run better on quads, but the CPU can be anything to fit in with the specifics, i would also want to overclock, even if i dont know how  

+1 evongugg

I would switch that graphics to an HD4770 to save little cash tho...

lol to save a little cash? he's got quite a budget, and a 4770 just would not do that kind of build justice

This build includes gtx 275's running in SLI. Make sure you flash to the latest bios with this board, and then afterwards update your drivers for it.

http://www.tomshardware.com/news/gigabyte-nvidia-sli-mo... <--- Gigabyte: Enable SLI On X58 Boards

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $74.99
COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $119.99 ($99.99 after $20.00 Mail-In Rebate) Free Shipping*
CORSAIR CMPSU-750TX 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply - Retail

http://www.ewiz.com/detail.php?name=MB-EX58U3R $185.99 | $170.99 after rebate Free Ground Shipping
GIGABYTE GA-EX58-UD3R Core i7/ Intel X58/ DDR3/ CrossFireX/ A&GbE/ ATX Motherboard

http://www.ewiz.com/detail.php?name=I7-920 $265.99 Free Ground Shipping
Intel Core i7 Processor i7-920 2.66GHz 8MB LGA1366 CPU, OEM

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $39.99 Free Shipping*
XIGMATEK Dark Knight-S1283V 120mm Long Life Bearing CPU Cooler - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $7.99 Free Shipping*
ARCTIC COOLING MX-2 Thermal Compound - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $249.99 ($229.99 after $20.00 Mail-In Rebate) Free Shipping*
EVGA 896-P3-1170-AR GeForce GTX 275 896MB 448-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $249.99 ($229.99 after $20.00 Mail-In Rebate) Free Shipping*
EVGA 896-P3-1170-AR GeForce GTX 275 896MB 448-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $94.99 Free Shipping*
G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168... $24.99 Free Shipping*
LG Black 22X (CAV) DVD+R 8X DVD+RW 16X DVD+R DL 22X (CAV) DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 22X DVD±R DVD Burner - OEM

http://www.newegg.com/Product/ComboDealDetails.aspx?Ite... Combo Discount: -$20.00 Combo Price: $149.98
Western Digital Caviar Black WD6401AALS 640GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive - OEM
Microsoft Windows Vista Home Premium SP1 64-bit for System Builders - OEM

Total: $1,469.88 | $1,394.88 w/mail in rebates

Ah, but we also have to consider the OP's display. What is it btw?