scremin got intel rig option
i think i will give you amd rig option (but i prefer scremin's rig)
cpu, AMD Trinity A10-6790K 3.80GHz - $132
mobo, Gigabyte GA-F2A88XM-HD3 - $80
ram, : G.Skill Ripjaws X Series 4GB (1 x 4GB) DDR3-1600 - $40
hdd, Western Digital Caviar Blue 1TB 3.5" 7200RPM - $55
odd, any DVDRW - $15
psu, Corsair VS450 - $37
atx, Emaxx Rebel - $34
hsf, Deep Cool Beta 200ST - $17
os, win 8.1 - $90
total = $500.00 (you can get this price in philippines) i think in us it will be $480-510
as for now better to save money for gpu