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how many WATTS(power supply) should i get for my pc build? HELP ME !

ok this is my specs

CPU - intel i7 4700k
GPU - powercolor hd 7950 3gb gddr5 384bit
RAM- gskill 32gb 8x4
SDD - 256GB sandisk
HDD- 2TB seagate
Optical Drive - Asus 24B5ST

how many watts for my powersupply ?
4 answers Last reply Best Answer
More about watts power supply build
  1. A 650W power supply should do the job, if you intend to overclock or add more GPUs you may want to consider more.
  2. For a single GPU setup.


    Both of these units are made by the best SEASONIC.


    PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($44.99 @ NCIX US)
    Total: $44.99
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-09-13 13:21 EDT-0400)


    For a Crossfire Setup.


    PCPartPicker part list / Price breakdown by merchant / Benchmarks

    Power Supply: XFX ProSeries 750W 80 PLUS Silver Certified ATX12V / EPS12V Power Supply ($79.99 @ NCIX US)
    Total: $79.99
    (Prices include shipping, taxes, and discounts when available.)
    (Generated by PCPartPicker 2013-09-13 13:23 EDT-0400)
  3. Buy the highest wattage QUALITY PSU you can afford. I prefer Seasonic.
  4. Best answer
    For a system using a single AMD reference design Radeon HD 7950 graphics card AMD specifies a minimum of a 500 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

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

    Overclocking of the CPU and/or GPU(s) may 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.
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