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PSU 2x GTX 670

Last response: in Graphics & Displays
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June 18, 2012 5:12:09 PM

Hello, I was wondering if OCZ ZT Series 750W could handle two GTX 670's in SLI?

More about : psu gtx 670

June 18, 2012 5:38:40 PM

I personally don't like OCZ PSUs but that wattage is more than enough. If you check out Anandtech's Bench, you can see the total power draw for a system equipped with a single 670 (they don't have SLI yet) is only 317w. So even if adding an additional card doubled the power draw, you'd still be OK.

This is further illustrated by looking at the power draw of a system with 2x 680s (536w).

Long story short, you'll be ok.
a c 84 Î Nvidia
June 18, 2012 5:58:33 PM

For a system using two reference clocked GeForce GTX 670 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater power supply that has a combined +12 Volt continuous current rating of 45 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 Combined Continuous Power/Current Available on the +12V Rail(s) @ 50°C ambient temperature, 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 OCZ ZT Series 750W (OCZ-ZT750W), with its combined +12 Volt continuous current rating of 62 Amps and with four (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two GeForce GTX 670 in 2-way SLI mode. There is more than sufficient spare capacity to handle any overclocking of the CPU and/or GPUs you may want to attempt.
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June 18, 2012 9:23:58 PM

subasteve5800 said:
I personally don't like OCZ PSUs but that wattage is more than enough. If you check out Anandtech's Bench, you can see the total power draw for a system equipped with a single 670 (they don't have SLI yet) is only 317w. So even if adding an additional card doubled the power draw, you'd still be OK.

This is further illustrated by looking at the power draw of a system with 2x 680s (536w).

Long story short, you'll be ok.



What PSU would you recommend
June 18, 2012 9:26:52 PM

Seasonic, Antec, Corsair, PC Power & Cooling, and XFX all make excellent PSUs. Ernmax is a newcomer to the market who also makes some fairly well reviewed PSUs, but I'm less familiar with them.

a c 80 Î Nvidia
June 18, 2012 10:15:37 PM

Enermax is not only not new they are one of the older power supply manufacturers and they are an actual manufacturer. So is Seasonic. All the other companies listed just rebrand. For instance Seasonic makes all of XFX's power supplies. Corsair power supplies are made by Seasonic, CWT and Flextronics.

Newer ( post 2007/2008 ) OCZ power supplies are very good and the ZT 750w model made by Great Wall is very highly rated. It get a 9/10 from jonnyguru.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
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