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Corsair 600CX V2.3 enough for 460 SLI?

post #1 of 19
Thread Starter 
Will this power supply be enough for 460 SLI? I'm looking for a low budget PSU.

My other option would be XFX 750w PSU if it can handle 6950/70 Crossfire. But, that'll have to wait for a while since this will be for my brother and he doesn't want to spend more than $100 in a PSU right now.
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post #2 of 19
650w is the minimum I think.

It might work, I'm not 100% sure or not.
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post #3 of 19
You'd be cutting it close, I'd say. Also, Phaedrus' PSU Calculator is a useful resource for questions like this.
post #4 of 19
Thread Starter 
Quote:
Originally Posted by t-ramp;14462953 
You'd be cutting it close, I'd say. Also, Phaedrus' PSU Calculator is a useful resource for questions like this.

Just checked out the link and he recommends 650w with good quality PSUs. Will have to wait for a good 650w or a 750w. It seems it will take 650w, too for 6960/90 CF.

This antec doesn't look too bad if my brother uses the newcustomer coupon:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049
Edited by Sodalink - 8/4/11 at 11:42am
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post #5 of 19
CX600 V2 may be okay, depending on the CPU and amount of overclocking. However, it's really on the low side, considering the +12V rating is only 480W.

Another issue is that the CX600 has 2 PCIe power connectors and 4 molex connectors. You need 4 PCIe power connectors for two graphics cards of that class (unless you want to use HD 6850s instead), and using two 2 molex -> 1 PCIe adapters...cabling might get tricky.

If you want to go cheap inexpensive (it's on the recommended list after all), Rosewill Green Series 630W is $60. It has 2 PCIe power and 6 molex. +12V rating is 600W, which should be plenty for any SLI GTX 460 system, or most Crossfire HD 6950 systems with power cap not increased.
post #6 of 19
Thread Starter 
Quote:
Originally Posted by mikeaj;14464741 
CX600 V2 may be okay, depending on the CPU and amount of overclocking. However, it's really on the low side, considering the +12V rating is only 480W.

Another issue is that the CX600 has 2 PCIe power connectors and 4 molex connectors. You need 4 PCIe power connectors for two graphics cards of that class (unless you want to use HD 6850s instead), and using two 2 molex -> 1 PCIe adapters...cabling might get tricky.

If you want to go cheap inexpensive (it's on the recommended list after all), Rosewill Green Series 630W is $60. It has 2 PCIe power and 6 molex. +12V rating is 600W, which should be plenty for any SLI GTX 460 system, or most Crossfire HD 6950 systems with power cap not increased.

You all have brought up some points I haven't even thought about. That's why I made this thread because no matter how much I read about power supplies I'm still behind. He hasn't gotten any video card yet, so I'll just see if we can wait a few more days for a deal on another PSU. Or he might buy that other one I linked the 750W Antec. Is that one good? It seems to be a new series from Antec.
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post #7 of 19
My XFX 650w does the job very nicely, I could probably get away with 550/600w for my system as a minimum. Not sure the build quality of that particular Corsair unit, but general consensus say's that corsair PSU's are very good, so in that case I would say yes it should do it but I would wait until someone with a bit more knowledge can comment on that PSU. I believe a good 600/650w should do more than fine for 460 SLI with a little headroom.

Hope that helps thumb.gif
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post #8 of 19
The CX600 would be enough. It would be tight but it would work. Don't expect to be doing any major stress testing or folding on that though.
post #9 of 19
If you want to pay the $90 (though there's a rebate to bring it down to a very attractive price), the Antec High Current Gamer 750W would be a good choice. It's solid, a step above the Corsair CX and Rosewill Green Series for sure. It will power just about any dual GPU system. Depending on what he gets, it may be way overkill, but on the plus side, it's still above 80% efficient a a low 10% load.

Initial reviews were concerned about the very high MSRP, but current pricing is much lower than that.
http://www.hardwaresecrets.com/article/Antec-High-Current-Gamer-750-W-Power-Supply-Review/1141
http://www.anandtech.com/show/4258/antec-hcg-750-gaming-psu/1
post #10 of 19
Quote:
Originally Posted by Sodalink;14462924 
Will this power supply be enough for 460 SLI? I'm looking for a low budget PSU.

My other option would be XFX 750w PSU if it can handle 6950/70 Crossfire. But, that'll have to wait for a while since this will be for my brother and he doesn't want to spend more than $100 in a PSU right now.

Using your current psu I wouldn't recommend doing SLI 460 because the CX600 doesn't give you continuous 600 watts on the 12V rail. Its only rated at 480 watts. It is recommended around 600-650 watts on a 12V rail for SLI 460.

Also you won't need a 750 watt psu for either SLI 460 or CF 6950/6970. A good 650 watts psu is needed.

Take a look at these power supplies... under $100 and will run the above set ups fine.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371048

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096

http://www.newegg.com/Product/Product.aspx?Item=N82E16817553003

http://www.newegg.com/Product/Product.aspx?Item=N82E16817256072
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