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SLI Gtx 660 PSU wattage?

Razziel
By Razziel
in Graphics Cards
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Go to solution Solved by lachyman,

Wattage isn't all. You also need a sufficient amount of amperage on the rails. A decent 600-650w would be recommended for a 660 sli. 

His PSU has a single 12V rail with 41.67A. More than enough in my eyes.

Posted

Hello everyone,

 

I have recently been basically given a second gtx 660 that I can put in my system and I'm semi-concerned about the power requirement of SLI.

I have a 500w Corsair CX500, and the TDP of a gtx 660 is 140w and my i5-3570k is 77w, so I figure 140+140+77= 357w. Which leaves 143w for the rest of my system.

 

Does this accurately represent the approximate wattage used? Any advice would be helpful.

The reason I'm doing SLI on 660's is because I want an Nvidia card with more than 3GB of vram for my next upgrade(high resolutions and/or multimonitor), which might be a whole new system anyways. This should keep me going until then.

 

Thanks for the help

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Wattage isn't all. You also need a sufficient amount of amperage on the rails. A decent 600w would be recommended for a 660 sli. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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660 eats very little, check your PSU if it has 2 PCI-e 6-pin cables, if it does you're good to go. I wouldn't say your PC would eat more than 400W.

My rig: CPU: Intel core i5 4670K MoBo: MSI Z87-G45 Gaming RAM: Kingston HyperX Beast 2x4GB 1600mhz CL9 GPU: EVGA GTX780 SC ACX SSD: ADATA Premier Pro SP900 256GBHDD: Western Digital RED 2TB PSU: FSP Aurum CM 750W Case: Cooler Master HAF XM OS: Windows 8 Pro

My Build log, the Snowbird (heavy WIP): http://linustechtips.com/main/topic/188011-snowbird-by-lachy/?hl=snowbird

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Posted
  • Solution

Wattage isn't all. You also need a sufficient amount of amperage on the rails. A decent 600-650w would be recommended for a 660 sli. 

His PSU has a single 12V rail with 41.67A. More than enough in my eyes.

My rig: CPU: Intel core i5 4670K MoBo: MSI Z87-G45 Gaming RAM: Kingston HyperX Beast 2x4GB 1600mhz CL9 GPU: EVGA GTX780 SC ACX SSD: ADATA Premier Pro SP900 256GBHDD: Western Digital RED 2TB PSU: FSP Aurum CM 750W Case: Cooler Master HAF XM OS: Windows 8 Pro

My Build log, the Snowbird (heavy WIP): http://linustechtips.com/main/topic/188011-snowbird-by-lachy/?hl=snowbird

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His PSU has a single 12V rail with 41.67A. More than enough in my eyes.

It should be enough. The psu fan would just a bit loud from the load. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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500 Watts is just fine, but pleeeaaase get the CX500M (it's semi-modular).

He already has the cx500.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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Thanks for the answers, you cleared it up for me. And yes, I unfortunately have the CX500. Never again will I go non-modular.

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I have had 660 SLI's for quite a while in combination with an overclocked 3570K. I used an CX600 V2. But my energy meter never exceeded the 420 watts. So i guess your 500 watt power supply will be sufficient

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