High end gaming specs

Look buddy,u can not do hardcore gaming in this budget.
Buddy expand your budget.Save more money.
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But good combination in this budget is:
CPU:INTEL DUAL CORE E6500 2.93Ghz (2MB CACHE - 1066Mhz FSB)
Motherboard:Intel DG41RQ.
Graphic Card:GT240 GeForce PCX 1GB (128-BITS) DDR3 or 9600 GT (Nvidia) whereas 5670 ATI PCX 512MB (128-BITS) DDR5 or 4670 ATI PCX 1GB ICEQ NATIVE (128-BITS) DDR3 (ATI)
I have given the outline.
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But with these components u will need more PSU.
N thus your budget will increase.
I recommend u to save more money if u want to do high-end gaming u should go for new technology i.e: Core i3,Core i5 or Core i7 with better GPU.
U should do future proof planning so that ur PC may last long in case of gaming.
N u will need a lot more than this budget.
By the way:
What about your RAM?
Give me more details about your configurations along with the PSU n names of the games which u want to play.
So that i will be able to help u more.