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Will an AX-850 cut it?

post #1 of 10
Thread Starter 
I'm going to get a GTX 680 when kepler is released and I'm torn between the AX-850 and the AX-1200. I'm reading mixed things on whether or not the AX-850 can run SLI GTX 580's. If it can run this then based on the lower consumption of kepler I'm thinking it wouldn't have a problem with SLI 680's.

I'd like a little head room so I can try overclocking the GPUs in the future. The PSU would also need to power:

i7-2600k OC to 4.5 Ghz
7 fans
2 HDD's
Asus Essence STX
post #2 of 10
Seeing as the power it'll take to run one hasn't been announced yet (i think?) you'll have to wait and see, but I'm pretty sure it should be able to hold 2 of those on that PSU, it's a good quality one unless it's power hungry like the GTX 480 is.
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post #3 of 10
Should be more then enough as an 850 will run a 480 sli setup, if the 680 is more power hungry then 480s then nvidia has some serious issues to work through
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post #4 of 10
The launch reviews are only few days away, why not wait for that before getting a PSU?
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post #5 of 10
hmm.. if i remember right (off the top my head) a 6 pin can have a power draw of 75 watts and the pci-e lane supplies 75 watts to the card.. as a guess the power draw of the 680 based off the pins (thought i saw that it had 2 six pin connectors) would be 225 watts.

if its around that 2 cards should draw 450 watts.add in 200 watts for the cpu (OCed) which would leave around 200 watts for the rest the system. so an 850 watt unit should be enough for sli. Of course this is just a guess until official numbers are out tongue.gif
Edited by DNytAftr - 3/18/12 at 4:30pm
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post #6 of 10
Thread Starter 
So it seems that a 850 W PSU would be more than enough to run SLI 680's. How much headroom would that leave for overclocking?
post #7 of 10

You could easily power 2. And there will be plenty of room left to spare. The AX850 is no slouch either. 

 
Gsvlip Dudyrm
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Oda'maksv
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post #8 of 10
corsair tends to underrate their power supplies. the ax850 is more like 900w give or take.
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post #9 of 10
Thread Starter 
Great, thanks. I was hoping I wouldn't have to spend the $100 more for a PSU I'd never need.

I have one other question though. I wanted to sleeve my psu cables, but I don't have the space for that in my apartment so I was going to buy some pre-sleeved. Since corsair offers sleeved kits I was looking at those, but the one for the AX850 says it only has 2 PCI-E connectors. Looking at this picture though:

http://www.frozencpu.com/products/image/15031/psu-cab-10_2.jpg/psu-cab-10/Corsair_Professional_Series_AX850AX750AX650_Individually_Sleeved_Modular_Cables_-_White_CP-8920010.html

Each PCI-E cable is 12 pin to dual 6+2 pins isn't it? So I could still power 2 GPUs with them correct (1 GPU per cable)?
post #10 of 10
Thread Starter 
I found this:

http://www.overclock.net/t/1203961/mt-corsair-silently-launches-individually-sleeved-cables/140

Post #149

So it seems its just an unclear description on the main corsair site.
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