Is a 500w PSU enough for my computer?

I'm putting together my first decent computer, and I'm not sure how many watts I need on my PSU. These are the parts I'm getting:

Motherboard: Gigabyte GA-990FXA-UD3

Processor: AMD FX-6300

Graphics Card: GeForce GTX 650 Ti SSC Refurb

RAM: Corsair CMZ8GX3M2A1600C9 (8 GB, DDR3 SDRAM, 1600 MHz, DIMM 240-pin) RAM Module

HDD: 1 TB Hitachi Travelstar 7K1000 2.5" SATA 6 GB/s 7200RPM 32MB Cache 13ms

SSD: 128GB SanDisk Ultra Plus, 7mm Slim 2.5" SSD, SATA III

Thanks for any advice :)
5 answers Last reply
More about 500w psu computer
  1. yep 500W is enough for this build.
  2. Here is a power supply calculator: http://www.extreme.outervision.com/psucalculatorlite.jsp

    I usually go about 10%-20% over recommended wattage, just to accommodate upgrades and aging of the power supply.

    Make sure you look at good brand names for the PSU - not all PSUs are the same. Antec, Corsair and Seasonic are the best, and their ratings are solid. Some brands out there will give you a "max" rating for 500W (this rating will not achieve constant 500W), while Antec, Corsair and Seasonic will constantly deliver 500W.
  3. As long as it's a GOOD 500w, then you're fine.
  4. 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.
  5. ronintexas said:
    Here is a power supply calculator: http://www.extreme.outervision.com/psucalculatorlite.jsp

    I usually go about 10%-20% over recommended wattage, just to accommodate upgrades and aging of the power supply.

    Make sure you look at good brand names for the PSU - not all PSUs are the same. Antec, Corsair and Seasonic are the best, and their ratings are solid. Some brands out there will give you a "max" rating for 500W (this rating will not achieve constant 500W), while Antec, Corsair and Seasonic will constantly deliver 500W.


    ^+1 Antec, Corsair and Seasonic are more than enough. No need to worry about nVidia minimum reqs with these brands (just the 6-pin connector, but all new PSUs have it). They truly deliver 500W or even more, and for this kind of configuration, the PSU will never exceed 50% load, even when CPU&GPU are at 100% load. Just choose a 80+ Bronze min. PSU from a good manufacturer and you can even get a lower power output than 500W (like 430W), although future upgrades/O.C. may need the little extra.
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