Is my 700w PSU powerful enough for 2 GTX 660s in SLI?

[ABMesser]

I was wondering if I got another 660 would my PSU have enough wattage to handle?

My Specs:

CPU: AMD FX-6300 @ 4.6 GHz - http://www.newegg.com/Product/Product.aspx?Item=N82E16819113286

GPU: MSI GTX 660 2gb OC edition - http://www.newegg.com/Product/Product.aspx?Item=N82E16814127699

PSU: RAIDMAX Blackstone series 700w modular - http://www.newegg.com/Product/Product.aspx?Item=N82E16817152042

MOBO: MSI 970 AMD AM3+ - http://www.newegg.com/Product/Product.aspx?Item=N82E16813130637

RAM: 4 X 4GB (16GB) G.Skill memory

Fan Controller: NZXT Sentry-2 Touch - http://www.newegg.com/Product/Product.aspx?Item=N82E16811992005

LEDs: NXZT HUE RGB Led Controller - http://www.newegg.com/Product/Product.aspx?Item=N82E16811992011

Water Cooler: Antec Kuhler H20 620 Cooler

HDD: 3TB Seagate Barracuda

8 X 120mm Case Fans

So I want to upgrade my computer and get a second MSI GTX 660 but I don't know if my PSU can handle it. Please let me know! Thanks!

 

[saint19]

Hi and welcome to Tom's forum.

The specs for your PSU says:

+3.3V@25A, +5V@25A, +12V1@23A, +12V2@23A, -12V@0.5A, +5VSB@2.5A

Those 23A in the 12V line are more that enough for handle the two GTX 660. The problem would be have all the PCI-E power connector for the two GPUs.

 

[ABMesser]

Hi and welcome to Tom's forum.

The specs for your PSU says:

+3.3V@25A, +5V@25A, +12V1@23A, +12V2@23A, -12V@0.5A, +5VSB@2.5A

Those 23A in the 12V line are more that enough for handle the two GTX 660. The problem would be have all the PCI-E power connector for the two GPUs.

The GTX 660 only uses 1 PCI-E connector, and my PSU comes with 2.

 

[saint19]

You are right, not problem then. I was watching the ASUS model that comes with 2 PCI-E power connector.

 

[toyftw]

Hi and welcome to Tom's forum.

The specs for your PSU says:

+3.3V@25A, +5V@25A, +12V1@23A, +12V2@23A, -12V@0.5A, +5VSB@2.5A

Those 23A in the 12V line are more that enough for handle the two GTX 660. The problem would be have all the PCI-E power connector for the two GPUs.

The GTX 660 only uses 1 PCI-E connector, and my PSU comes with 2.

Hi - a good quality 600w PSU would power that system. However, you
have a very poor brand PSU(Raidmax - tier 5). I'd say keep a close eye on your system after you put the 2 GPU's in.

http://www.eggxpert.com/forums/thread/323050.aspx

"Tier 5 - Other than the units listed above for any of these brands, NOT RECOMMENDED. Replace ASAP if you have one"

 

[ABMesser]

Hi and welcome to Tom's forum.

The specs for your PSU says:

+3.3V@25A, +5V@25A, +12V1@23A, +12V2@23A, -12V@0.5A, +5VSB@2.5A

Those 23A in the 12V line are more that enough for handle the two GTX 660. The problem would be have all the PCI-E power connector for the two GPUs.

The GTX 660 only uses 1 PCI-E connector, and my PSU comes with 2.

Hi - a good quality 600w PSU would power that system. However, you
have a very poor brand PSU(Raidmax - tier 5). I'd say keep a close eye on your system after you put the 2 GPU's in.

http://www.eggxpert.com/forums/thread/323050.aspx

"Tier 5 - Other than the units listed above for any of these brands, NOT RECOMMENDED. Replace ASAP if you have one"

Alright. I originally only got it because it was like $50 around last black friday. One of my more computer-savvy friends said that raidmax wasn't very good, but blackstone was one of their more acceptable. Thanks for the answer.