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Is 750w enough?

Last response: in Components
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February 29, 2012 2:21:39 AM

Specs:
->i5-2500k
->Asrock z68 Extreme3 Gen3
->8gb Gskill
->2x evga 560ti
->1tb Seagate Barracuda
->LG optical drive
->2x 200mm red led fans
->2x 120mm black fans

Planning to get
->OCZ ZT 750w
or
->Corsair TX 750w

Also planning to OC 2500k and the 560ti's

Will 750w be enough? If so, which is the better psu? If not, other options that would be good?

More about : 750w

Best solution

a c 1167 ) Power supply
February 29, 2012 3:46:33 AM

For a system using two GeForce GTX 560 Ti 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 52 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.

To handle the overclocking of the CPU and GPUs add at least another 10 Amps to the +12 Volt continuous current rating.

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 sufficient to power your system configuration with a two GeForce GTX 560 Ti in 2-way SLI mode.

The Corsair Enthusiast Series TX750 V2 (CMPSU-750TXV2), with its combined +12 Volt continuous current rating of 62 Amps and with four (6+2)-pin PCI Express supplementary power connectors, is sufficient to power your system configuration with a two GeForce GTX 560 Ti in 2-way SLI mode.

If your computer case has a bottom mount power supply bay the get the Corsair because it has longer (20+4)-pin ATX and (4+4)-pin EPS cables.
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February 29, 2012 4:46:10 AM

Playing around on PSU calculater;

2x GTX 560ti (ref cards); 2500K oc'ed 40%(max you can really do), 2HDD, 1SSD, 4 RAM modules, 5 Fans comes to 650W drain. I would look at a Antec HCP 750
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March 2, 2012 2:02:42 AM

Best answer selected by dylwing23.
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