What Wattage PSU shall I use?

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Max Galloway

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Apr 17, 2013
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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
 
Solution
ko888
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.

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ko888

ko888

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Feb 18, 2009
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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.
 
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Solution
M

Max Galloway

Honorable
Apr 17, 2013
3
0
10,510




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.
 
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ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990


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.
 
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