Can my Power Supply Support My New Setup?

Alamist · Sep 29, 2013

Hello all!

First off, here are my current specs:

CPU Specs:

AMD FX-8350 @ 5.0Ghz + Corsair H100i (Push-Pull)
ASUS Sabertooth 990FX R2.0
Corsair Vengeance (2x8GB) @ 1600Mhz
EVGA NVidia GTX 670 FTW
WD Caviar Black 1TB
Samsung 840 120GB
Corsair CX750M (This is the power supply)
NZXT Phantom Full Tower

I was wondering, If I purchased another 670 for SLI, would I have to buy a new PSU?

Edit: Just for reference, my CPU is running on 1.5V and my RAM on 1.65V. (I dont know if this matters, but here you go)

Thanks!

GoldenI · Sep 29, 2013

You would definitely need to purchase a new PSU if you bought another GTX670 for SLI performance... They are electricity whores.

ryan27968 · Sep 29, 2013

750 should be plenty.

ko888 · Sep 29, 2013

For a system using two NVIDIA reference design GeForce GTX 670 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater system power supply that has a maximum 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!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may 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.

The Corsair CX750M (SKU # 75-002019 / CP-9020061) power supply unit, with its maximum combined +12 Volt continuous current rating of 62 Amps and with four (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with two GeForce GTX 670 graphics cards in 2-way SLI mode.

Alamist · Sep 29, 2013

ryan27968 :

Wow two completely different responses...

This website says that my computer only takes 718W at 90% load on everything. Is this accurate?
http://extreme.outervision.com/PSUEngine

Alamist · Sep 29, 2013

ko888 :

For a system using two NVIDIA reference design GeForce GTX 670 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater system power supply that has a maximum 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!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may 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.

The Corsair CX750M (SKU # 75-002019 / CP-9020061) power supply unit, with its maximum combined +12 Volt continuous current rating of 62 Amps and with four (6+2)-pin PCI Express supplementary power connectors, is way more than sufficient to power your system configuration with two GeForce GTX 670 graphics cards in 2-way SLI mode.

Thank you. Care to cite your sources?

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Can my Power Supply Support My New Setup?

Alamist

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ko888

GoldenI

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ryan27968

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ko888

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Alamist

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Alamist

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