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What PSU for a new computer?

Last response: in Components
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May 11, 2012 6:17:53 PM

So I am building a new desktop PC and I have this one from my old that I can re-purpose if it will work with my new setup.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

My new setup:

Motherboard: ASUS P8Z77-V DELUXE
CPU: INTEL 3770K
GPU: EVGA 680 SC Signature
Memory: 16GB
Storage: 2x SSD, 2-3x HDD
Optical: 1x Blu-ray, 1x DVDR

If not, can anyone recommend a good one?

Thanks

More about : psu computer

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a c 1176 ) Power supply
May 11, 2012 6:32:24 PM

For a system using a single GeForce GTX 680 graphics card NVIDIA specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two GeForce GTX 680 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 750 Watt or greater power supply that has a combined +12 Volt continuous current rating of 53 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.

Overclocking of the CPU and/or GPU(s) will require an additional increase to the 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 you are trying to achieve.

The PC Power & Cooling Silencer 610 EPS12V (S61EPS), with its combined +12 Volt continuous current rating of 49 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single GeForce GTX 680. It is insufficient to power your system configuration with two GeForce GTX 680 in 2-way SLI mode.
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May 11, 2012 8:17:30 PM

Thanks, I only plan to have one GTX 680, so overclocked or not, my PSU is sufficient?

Doesn't all my other hardware factor into power draw though or are those basically negligible compared to the GPU?
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a c 1176 ) Power supply
May 11, 2012 8:21:33 PM

everybest said:
Thanks, I only plan to have one GTX 680, so overclocked or not, my PSU is sufficient?

Doesn't all my other hardware factor into power draw though or are those basically negligible compared to the GPU?

For only one GeForce GTX 680 your current PSU is more than sufficient.

The devices that draw the majority of the power, in a modern system, is the GPU and the CPU. Everything else is minor.
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a b ) Power supply
May 11, 2012 8:23:51 PM

First off, NVidia provides a "recommended" wattage based on Mid (Mid used lightly) grade psu. These PSUs often only provide 60->80% of ADVERTISED Power. You have a quality PSU with rated Output all the way up to 40C. And the +12V is a Single rail so do NOT have to sweat ensuring individual rails do not exceed rail rated current !!!

For Single card you are in great shape,
For SLI you are close to my comfort range, but the PSU can handle it. You have about 100+ Watts headroom so should be OK. You would need adaptors to go from Molex to pci-e pwer connector.
The Card comes with the adaptor cables, so great shape there also.

Rational Based on.
http://www.anandtech.com/show/5818/nvidia-geforce-gtx-6...
and from Guru, single card (307 Watts, SLI 473 Watts
Measured power consumption one card

System in IDLE = 144W
System Wattage with GPU in FULL Stress = 307W
Difference (GPU load) = 163W
Add average IDLE wattage ~10W
Subjective obtained GPU power consumption = ~ 173 Watts
Measured power consumption two cards in SLI

System in IDLE = 155W
System Wattage with GPU in FULL Stress = 473W
Difference (GPU load) = 318W
Add average IDLE wattage ~20W
Subjective obtained GPU power consumption = ~ 338 Watts

Nice set-up, ENJOY
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May 11, 2012 8:32:17 PM

Thank you for the helpful responses :) 
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May 11, 2012 8:32:28 PM

Best answer selected by everybest.
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