$600-$700 Gaming Computer

Can you wait a few weeks till the Sandy Bridge motherboards are available?

Here is an rough idea what a ~$700 SB build could look like.
Core i5-2300 Sandy Bridge 2.8GHz (3.1GHz Turbo Boost) Quad-Core CPU $185
ASUS P8H67-M LX LGA 1155 Intel H67 SATA 6Gb/s Intel Motherboard est $110
G.SKILL Ripjaws X Series 4GB (2 x 2GB) 2 DDR3 1600 RAM $65
Seagate Barracuda 7200.12 500GB HDD $40
Asus 24x DVD burner $19
EVGA GTX 460 1GB Video Card $160
SeaSonic S12II 520 Bronze 520W Power Supply $70
COOLER MASTER HAF 912 Mid Tower Computer Case $60

~$709 before any rebates, taxes and shipping. Add a copy of Windows 7 64bit for $100

This is just an outline to let you know what you can get for around $800.
We should be able to do a bit better with rebates and sales, etc, when it's time to order.

Sure, but will I be able to afford it with a $700 budget?

I think there's a fair chance we can find some good deals that let you slide into something like that.
There are other good options out there too.
Athlon II X3/Phenom II X4 build might let you bump up the GPU to better handle that 1920x1080 monitor you slipped in there.

With a GPU upgrade to HD 6950

AMD Phenom II X4 955 Black Edition 3.2GHz Quad-Core CPU combo deal $375 $20 rebate
XFX Radeon HD 6950 1GB 256-bit GDDR5 Video Card
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

ASRock 870 EXTREME3 AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard $90
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

WINTEC AMPX 4GB (2 x 2GB) DDR3 1333 RAM $43
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Seagate Barracuda 7200.12 500GB HDD $40
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Asus 24x DVD Burner $19
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

XFX XXX 650W 80+ BRONZE PSU $95 & 30 rebate
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case combo $150
Windows 7 Home Premium 64-bit
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

~$812 and $50 in available rebates

Alternate GPU HD 6950 2B a $12 increase

AMD Phenom II X4 955 Black Edition 3.2GHz Quad-Core CPU combo deal $375 $20 rebate $387 $20 rebate
SAPPHIRE 100312SR Radeon HD 6950 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity
http://www.newegg.com/Product/ComboDealDetails.aspx?Ite...

+1 Good Build and a 6950 2GB in 700$ build nyc

I'm not sure a 'no-overclocking' kind of guy wants to do a MOD to get a 6970.. but the option is there and might help sell that video card when it comes time to upgrade.

Turn your AMD Radeon 6950 to 6970 via Bios Flash mod
http://forums.vr-zone.com/the-overclockers-bay/983059-t...
(be sure to read about backup BIOS before you take a chance on 'bricking' your video card)

The flashing technique has overheating problems

Do u happen to live near a Microcenter?

Nice Build!

If you were interested in cutting cost a little bit you could probably save here:

Case: Save $10 RAIDMAX Hurricane ATX-248WB
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Mobo: Save $20 (No Crossfire, Sata 6, or USB 3)
MSI 760GM-E51
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU: Although I cannot find one right now; you can normally find a great 650 PSU for $65. Just gotta be on the look out.

specifically keep your eyes on these Antec ones:

http://www.newegg.com/Product/ProductList.aspx?bop=And&...

They go on sale all the time.