What PSU for GeForce 650ti

I recently upgraded my GPU, specifically a GeForce 650 Ti and the description says it needs a 400w psu. My friends told me that I should buy a 500w PSU to be sure that it can handle it. Will a Corsair VS450 450W 80% Efficiency PSU sufficient enough for this GPU? I am not really good at computers. Thank you. Sorry for my bad english though.

Also, does the VS450 have 6 pin connectors?
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    For a system using a single GeForce GTX 650 Ti graphics card NVIDIA specifies a minimum of a 400 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 20 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

    The GeForce GTX 650 Ti does not support SLI mode.

    Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

    Overclocking of the CPU and/or GPU(s) will require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

    The entry-level Corsair VS450 (SKU# 75-001835 / CP-9020049), with its maximum combined +12 Volt continuous current rating of 34 Amps and with one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single GeForce GTX 650 Ti graphics card.
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