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Sufficient Power for SLI?

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December 12, 2012 12:06:02 PM

Good morning!

This is a bit of a forward thinking question since I don't plan on added a second card for about 2 years, but I just want to get a handle on things.

I just finished replacing my motherboard, cpu, ram, and gpu.

I went from dual EVGA GeForce 8800GTS (G92) 512mb to one EVGA GeForce GTX 680.

Currently I have the ENERMAX INFINITI EIN720AWT, which is 720 watts as the name suggests.

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

I was wondering if i could get away with adding a second EVGA GeForce GTX 680 into this system with this power supply still in operation. I have had it for five years now and it has never given me an issue with the previous cards. (Is five years too long to have a power supply in service under this kind of strain?). Also it looks like i will have to use the molex adapters that come with the card when I add a second. I only have one open 6 block rail and no open 8 block rails, but plenty of open 5 blocks.

Best,

T

More about : sufficient power sli

a c 243 ) Power supply
December 12, 2012 12:24:10 PM

You're likely going to be decreasing your power consumption, and had much more than neccessary to begin with
As long as it's still stable there should be no reason to swap out the psu
Check the card, it may come with a 6 pin to 8 pin adapter, some do these days

Edit; reread it, missed 680 SLI first time, power consumption will increase, not by alot but I'd upgrade to have the connectors
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December 12, 2012 1:21:39 PM

Yeah. It feels a little dubious relying on the molex adapters. I suppose 800 watts would be enough?

Do you have any suggestions for full modular power supplies?

Enermax had an interesting feature where it kept the fans on in the computer after you turned it off. Do you think this has an real benefit?
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a c 243 ) Power supply
December 12, 2012 7:50:51 PM

tgboyes1 said:
Yeah. It feels a little dubious relying on the molex adapters. I suppose 800 watts would be enough?

Do you have any suggestions for full modular power supplies?

Enermax had an interesting feature where it kept the fans on in the computer after you turned it off. Do you think this has an real benefit?

800w would be more than enough
AX760
Helps cool things down a bit faster, never had a problem not having such a feature
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a c 282 ) Power supply
December 12, 2012 8:22:11 PM

tgboyes1 said:
Yeah. It feels a little dubious relying on the molex adapters. I suppose 800 watts would be enough?

Do you have any suggestions for full modular power supplies?

Enermax had an interesting feature where it kept the fans on in the computer after you turned it off. Do you think this has an real benefit?


Hi - if you can act today, there's great deals on XFX full modular:

http://www.newegg.com/Product/Product.aspx?Item=N82E168... nets to $78 750w 4-pci-e connectors
http://www.newegg.com/Product/Product.aspx?Item=N82E168... nets to $95 850w " " " "

The promo's end tonight - both are modular
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