Help me build a Budget PC
 

I am looking to build a Budget PC for my sis. I have been out of the market, so I don't know what's available out there.

My budget is $500 before tax., I don't need a LCD screen. The PC will be mainly used for word processing, net surfing, streaming HD content to PS3, and for gaming (rarely).

Just put this together for a friend a week or so ago. The prices may not be completely accurate anymore.
NCIX Pricematch
CPU: Athlon II X4 620 $129.99 $104.97
Mobo:GA-MA785GMT-UD2H $98.43 $84.99
RAM: G.Skill 4GB DDR3 $114.99 $99.99
HDD: Seagate 7200.12 500GB $53.99 $53.54
DVD: Samsung SH-S222A $33.37 $25.99
PSU: Corsair CMPSU-400CX $52.99 $36.99
Case:Antec 300 $57.99 $57.99
Total $541.75 $464.46

The mobo I selected comes with onboard video. If you want you could get a different motherboard + dedicated graphics but that would likely bring the total over $500 before tax/shipping. Also you may need a more powerful PSU depending on what video card you choose.

EDIT: the formating came out kinda shitty. Sorry

Your mobo is a mATX, will that fit the ATX case?

EDIT: nevermind, it does.. any other suggestions?

$500 is a budget PC?

what do you call a $250 dual core PC?

AMD Athlon II X4 620 Quad Core Processor Socket AM3 2.6GHZ 2MB Cache 95W Retail Box 102.23
Gigabyte GA-MA785GMT-UD2H AMD785G mATX AM3 PCI-E DDR3 Video Sound GLAN CrossFireX HDMI Motherboard 87.99
Western Digital Caviar Black 500GB 7200RPM 32MB Dual Proc SATA 3.5IN Hard Drive OEM 5YR MFR Warranty 57.99
OCZ OCZ3P1333LV4GK 4GB DDR3 2X2GB DDR3-1333 PC3-10666 CL 7-7-7-20 Dual Channel Memory Kit 103.82 83.82
Samsung SH-S222A/BEBE 22X Dual Layer DVD Writer Black IDE OEM 24.99
OCZ StealthXStream 400W ATX12V 24PIN Active PFC ATX Power Supply 120MM Fan Black 39.86 29.86
Logitech Cordless Desktop EX100 Compact Wireless Keyboard & Mouse Combo Optical USB 24
Antec Three Hundred Mini Tower Gaming Case 300 ATX 3X5.25 6X3.5INT No PS Front USB & Audio 53.79
Coolermaster Hyper 212 Plus Direct Touch 4 Heatpipe Heatsink AM2 AM3 LGA1366 LGA775 LGA1156 120MM 24.2
Coolermaster R4-L2R-20AC 120MM Case Fan 2000RPM 69CFM 19DBA 3/4 Pin 5.99
Coolermaster R4-L2R-20AC 120MM Case Fan 2000RPM 69CFM 19DBA 3/4 Pin 5.99
System Assembly 50

Is 400W enough juice for this build? I am planning to OC as well.

So, can anyone help me out? like Skinny? :)

I'd go with what Crow suggested, but with an ASRock 785G (which has SidePort, so you don't have to sacrifice system ram for video) and some OCZ ram in the $80 range. Take that extra budget and see if you can apply it to a Phenom II X4.

How does the i3 stack up with the Athlon II X4? Worth the extra cost?

Check out this article:

AMD vs Intel in a $100-150 CPU Battle

^ You have the wrong model number in the last row of your table. It's a "620".