You don't say where you're from or where you're shopping. I assume you're in the U.S.
My specs:
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quantity of item 1
Sony Optiarc 24X DVD/CD Rewritable Drive Black SATA Model AD-7240S-0B
Sony Optiarc 24X DVD/CD Rewritable Drive Black SATA Model AD-7240S-0B - OEM
Item #: N82E16827118030
Return Policy: Limited Replacement Only Return Policy
$25.99
select item 2 quantity of item 2
SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5
SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Item #: N82E16822152181
Return Policy: Standard Return Policy
$54.99
select item 3 quantity of item 3
POWERCOLOR AX5770 512MD5-H Radeon HD 5770 512MB 128-bit GDDR5 PCI Express 2.1 x16 CrossFireX Support Video Card
POWERCOLOR AX5770 512MD5-H Radeon HD 5770 512MB 128-bit GDDR5 PCI Express 2.1 x16 CrossFireX Support Video Card - Retail
Item #: N82E16814131328
Return Policy: VGA Standard Return Policy
Protect Your Investment (expand for options14-131-328|hide options14-131-328)
Service Net Replacement Extended Warranty Plan
The product will be replaced and shipped directly to you at no charge(more info14-131-328.0.18)
* 1 year: $16.99
* 2 year: $25.99
$149.99
select item 4 quantity of item 4
OCZ Gold Edition 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1066 (PC3 8500) Dual Channel Kit Desktop Memory Model OCZ3G10664GK
OCZ Gold Edition 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1066 (PC3 8500) Dual Channel Kit Desktop Memory Model OCZ3G10664GK - Retail
Item #: N82E16820227346
Return Policy: Memory Standard Return Policy
-$10.00 Instant
$89.99
$79.99
select item 5 quantity of item 5
AMD Phenom II X4 925 Deneb 2.8GHz Socket AM3 95W Quad-Core Processor Model HDX925WFGIBOX
AMD Phenom II X4 925 Deneb 2.8GHz Socket AM3 95W Quad-Core Processor Model HDX925WFGIBOX - Retail
Item #: N82E16819103656
Return Policy: Standard Return Policy
$140.99
select item 6 quantity of item 6
OCZ StealthXStream OCZ700SXS 700W ATX12V / EPS12V SLI Ready CrossFire Ready Active PFC Power Supply
GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard
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OCZ StealthXStream OCZ700SXS 700W ATX12V / EPS12V SLI Ready CrossFire Ready Active PFC Power Supply - Retail
Item #: N82E16817341019
Return Policy: Standard Return Policy
*
GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard - Retail
Item #: N82E16813128392
Return Policy: Standard Return Policy
Protect Your Investment (expand for options13-128-39210|hide options13-128-39210)
Service Net Replacement Extended Warranty Plan
The product will be replaced and shipped directly to you at no charge(more info13-128-3921.0.18)
o 1 year: $9.99
o 2 year: $16.99
-$25.00 Instant
-$20.00 Combo
$30.00 Mail-in Rebate Card17-341-019
$10.00 Mail-in Rebate Card13-128-392
$184.98
$139.98
Subtotal: $591.93
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The PSU is good quality at a great price. The mobo is ATX and is budget. The HD 5770 is good for gaming even on DX11. I don't know what games or kinda games you play. If you switch the GPU out for HD 5850, you'll be at $650-ish, excluding a case, tax & shipping. You'll be over budget. If you can get $800, it's enough for a high-end AMD gaming build. Maybe borrow a hundred. After rebates, you can pay back some of it. Or even sell your old rig.
You have to pick out a case:
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010090007%201054808287&name=ATX%20Mid%20Tower