CPU: e5200 80$
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116072
mobo: MSI P35 Neo-F 85$
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130095
ram: 2x2 gb a-data 800 40$
http://www.newegg.com/Product/Product.aspx?Item=N82E16820211188
hdd: samsung F1 640 gb 70$
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152134
DVD 25$
http://www.newegg.com/Product/Product.aspx?Item=N82E16827136152
case 23$
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147074
good quality Antec psu 35$
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371005
total: 358$ without graphic card
this $30 one will give you enought power for minimal gaming (still better than any config mentioned above)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121259
this $80 one will give you more power than x360/ps3 has
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127383
this $140 one will run DMC4, Mass Effect at full hd with no problems and better framerates than x360 at 720p :)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161259
PROUD MEMBER OF THE PSP RPG FAN CLUB