Actualy CPU is more important than GPU.
You can play moast games with an overclocked e4300 or amd 4400+ with an 6600GT video card.
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.:E4300@3.2Ghz «-» BFG 8600GTS OC «-» WD External 1000GB HD «-» 2x1GB Umax 800Mhz «-» C-zone - Master 18Mb/s Internet dl/ul Speed:.