Solved

What Wattage PSU shall I use?

I'm building a gaming pc for the first time with my dad who helping but I'm not sure what PSU should i use and what wattage it should be?


My specs are (if it helps)

Graphics card-PNY NVIDIA GTX 660 1033MHz 2048MB 192-bit

Motherboard-ASRock Z77 Extreme4

Case-Zalman Z11 Plus Midi Tower Case

Ram-Corsair 16gb

Processor- 3570K Ivy Bridge 3.4GHz

HDD-1TB

All suggestions grateful. Thank you
7 answers Last reply Best Answer
More about wattage psu
  1. 600w would be plenty, but a 500w unit would be sufficient.

    Find a brand such as corsair, antec, seasonic, xfx.
  2. Seasonic makes some of the best power supplies, a 620 watt should be sufficient for a single GPU system unless you plan to SLI in the future.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095

    Also you only need 8GB of ram, 2x4GB would be sufficient for a gaming system.
  3. http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-660

    Minimum System Power Requirement = 450Watts
    Add 140 watts if 2nd card in SLI = 600 watts

    Go 750 watts if overclocking GPUs and CPU
  4. Great help guys thx
  5. Best answer
    For a system using a single GeForce GTX 660 (non-Ti) graphics card NVIDIA specifies a minimum of a 450 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 24 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

    For a system using two GeForce GTX 660 (non-Ti) graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 600 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 36 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

    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 at 45°C - 50°C ambient temperature, is the critical 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.
  6. edogawa said:
    Seasonic makes some of the best power supplies, a 620 watt should be sufficient for a single GPU system unless you plan to SLI in the future.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095

    Also you only need 8GB of ram, 2x4GB would be sufficient for a gaming system.


    Anonymous said:
    For a system using a single GeForce GTX 660 (non-Ti) graphics card NVIDIA specifies a minimum of a 450 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 24 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

    For a system using two GeForce GTX 660 (non-Ti) graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 600 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 36 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

    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 at 45°C - 50°C ambient temperature, is the critical 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.


    If I used a XFX 3072MB GDDR5 AMD ATI Radeon HD 7950 Double what PSU and wattage would you recommend? great answer btw helped, but thinking of getting better GPU.
  7. Max Galloway said:
    If I used a XFX 3072MB GDDR5 AMD ATI Radeon HD 7950 Double what PSU and wattage would you recommend? great answer btw helped, but thinking of getting better GPU.


    Which model, XFX Double D HD 7950 900MHz 3GB DDR5 (FX-795A-TDFC) or XFX Double D HD 7950 800MHz 3GB DDR5 (FX-795A-TDJC)?

    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. Some of the non-reference design cards use one 6-pin & one 8-pin or two 8-pin PCI Express supplementary power connectors.

    For a system using two AMD reference design Radeon HD 7950 graphics cards in 2-way CrossFire mode AMD specifies a minimum of a 750 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 45 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors. Some of the non-reference design cards use one 6-pin & one 8-pin or two 8-pin PCI Express supplementary power connectors on each card.
Ask a new question

Read More

Gaming Components