How is this mid range build

$159 Q8400
$135 ( $114 AFTER MIR - YET TO ORDER ) GA-EP45-UD3P
$60 ( $40 AFTER MIR - YET TO ORDER ) Antec EarthWatts 650W
$90 ( $70 AFTER MIR - YET TO ORDER ) CORSAIR TWIN2X4096-8500C5
$100 ( $80 AFTER MIR - YET TO ORDER ) PNY XLR8 VCG98GTEE1XEB GeForce 9800 GT 1GB

How is this mid range build?

I believe I can do virtualization with this processor?

My desire was to play DOOMIII, HL2 and America's Army 3.0 with this setup - should this not be enough?

It seems like I can also play some of the "latest games" with this too?

If I can't - no worries - this going to my parents anyways after a month or two :-)

Could I have done better in approx the same price with some other components?

For example, should I have chosed an ATI GPU instead?