500w PSU enough for my new GPU? cooling?

I'm adding

My current setup;

Core i5-2310 2.9ghz
Standard Insprion 0GDG8Y motherboard
2x4gb ddr3
1x SATA HDD
1x PCI Ethernet
2x cooling fans (1 cpu, 1 case)

Looking to change out my current GPU (Radeon hd 6450) for an Nvidia GTX 660 2gb, which is basically a quantum leap.

Thermaltake's system calculator says i'll need around 375w and recommends a 430 w PSU. I'm thinking just going for the 500w to give a little breathing room.

Also thinking of adding another case fan for additional cooling.

Thoughts?
5 answers Last reply
More about 500w psu gpu cooling
  1. Get a 600W for future-proofing.

    Another case fan is always a good idea.
  2. 500w is plenty the 6450 is not a high power gpu. Just don't get a cheap unit no matter what size it could still fry the system or cause instability. Here's a guide for choosing a make and model of power supply, get something in tier 1,2 or 3.
    http://www.eggxpert.com/forums/thread/323050.aspx
  3. For the GTX660 a 450W or higher is recommended. If you get a 500W or higher you can power most video cards.

    I would recommend the XFX 550W at $55 after $10 MIR http://us.ncix.com/products/?usaffiliateid=1000031504&sku=59615&vpn=P1550SXXB9&manufacture=XFX&promoid=1257
  4. 500 is good enough, if it's a brand name PSU like Corsair, Seasonic, Antec. If it's some garage sale special one, than it prob doesn't have the amps on the 12V rail needed, or the pins.
  5. Thanks guys! Gonna go with a Corsair CX 500w

    http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139027

    Overall a decent rated PSU and has a $20 rebate
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