Building ~500$ need advice

[cab987]

Approximate Purchase Date: a couple of months

Budget Range: 400-600

System Usage from Most to Least Important: Gaming,Surfing the internet,watching movies

Parts Not Required: Speakers, i have windows xp not sure if i have to upgrade. i also got case, mobo, PSU. i just need CPU and Graphics card im assuming

Preferred Website(s) for Parts: canadacomputers.com

Country: Canada

Parts Preferences: AMD CPU and NVIDIA GPU

Overclocking: if requierd

SLI or Crossfire: ??

Monitor Resolution: no clue all i know is its a 24 IN gateway

Additional Comments: im FIXING/upgrading a computer, the GPU and CPU are 4 years outdated. it turns off when i open things too fast or move the mouse too fast. wierd. also i would like it to run BF3 of ultra

 

[manu 11]

what mobo , case and psu do you have.

 

[cab987]

Case:Tsunami Dream

http://www.thermaltakeusa.com/product.aspx?c=1327&id=1461

Motherboard:i belive it is ASUS n13219
i see that code in between the slots.




PSU:Nspire Power Supply NSP-450P4LF12 450W ATX2.0

http://www.copystars.com/nspire_nsp-450p4lf12_atx2.0_45_nspire-3418-prd1.htm

PSU i found on it and i typed in the number on google and i got this