suggest m a new system within $1000 incl monitor
Very good. Where Are you from?
CPU: i5 2500k $225
Heat Sink and Fan: Stock
Motherboard ASRock Z68 Extreme3 $125
RAM: G.Skill Ripjaws 1600 2x4GB $40
GPU: HIS IceQ X 6950 $240
HDD: Use your Old. Buying new isn't recommended right now because of the flood.
ODD: LG DVD+CD RW Combo $20
PSU: Corsair GS600 $100
Case: Cooler Master HAF 912 $65
Monitor: Acer 21.5" (Max 1920x1080) $135
Total will be $950, In your country it maybe up to $1050-$1100, but if you can keep your old case, maybe old RAM and old Optical Disc Burners You can go down to below $1000.