Is 500W enough for GTX 650ti?

[DanTheMan827]

Hello, I'm wondering if a 500 watt power supply would be enough to upgrade my graphics card to a Nvidia GTX650ti

Below is my current hardware:

MSI P7N SLI Platinum LGA 775 NVIDIA nForce 750i SLI ATX Intel Motherboard
Intel Q8200
1GB 9500 GT (Fanless)
2x 2GB DDR2 Memory

Western Digital WD1600JB-00GVA0 PATA
Western Digital WD800BB-00CAA1 PATA
2x Samsung HD204UI SATA

2x DVD-RW (PATA, one LightScribe)
4x 80mm fans
Chameleon Lighting System

the eXtreme Power supply calculator says 438W but the newegg calculator says 559W so which one is right?

These were both calculated with the 550ti because the power requirements are pretty close to the 650ti

 

[morgilroka]

The Setup will use a minimum of ~400watts. Just to play it safe i would go with a slightly higher wattage psu. A 550w or even a 650w for overclocking and upgrades in the future. If not, then atleast get a good brand of PSU like a corsair, Antec, Seasonic
etc.

It's never good to run a power supply at close to full load all the time and when gaming it will put a strain on the psu and eventually shorten its life-span. Will a 500w work? Yes! Do i recommend using it? No!

 

[DanTheMan827]

Best answer selected by DanTheMan827.