How many watts do I need

Here are my specs, what powersupply should I get:

Intel Core i3-3220 CPU
MSI B75MA-P45 Motherboard:
EVGA GTX 650 Ti Graphics Card:
4GB Corsair Vengeance 1600MHz
500GB Western Digital Caviar Blue Hard Drive
NZXT Source 220 Case
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More about watts
  1. 400W would be plenty, assuming it's decent quality (and has sufficient amps on the 12V rail).
  2. Best answer
    According to this chart ( ) on another system review ( Article Here ) using an 1-7 CPU that is much higher wattage than your i3 and 16GB. of ram etc. (so higher usage than your system overall ) the system used a max of around 250W. (figure your GPU is rated at TDP of 110 Watts and your CPU at 55W so overall a fairly low wattage TDP ) - so you should be fine with any 400+ Watt PSU that is of decent quality.

    IF you have not purchased one yet Neweeg currently has a Corsair Builders Series 430W unit for $40 - $20 Rebate ( $19.99 after MIR ) ( Link ) that should be fine.
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