I found some forums where people say you can't, so I want to make sure because on the back of the box it says ''Ready for any SLI configuration''.
 
I have a Cooler Master GX 650W. Nothing on my computer is overclocked. These are my computer specs:
 
CPU INTEL I5 2500K 3.3GHz
ASUS Sabertooth P67(REV 3.0)
EVGA GTX560 Ti Maximum Graphics Edition
CoolerMaster GX 650W
Corsair Vengeance 2gx2
1T Sata6.0 HD
LITE-ON DVD Burner

Definitely not. 
  Put a new link, other source was misleading.
http://www.bit-tech.net/h...tx-560-ti-1gb-review/8

Do a Google search for reviews of your unit.  I would say it is questionable how well it would handle SLI.  It is not the highest quality unit.  
 
This review here indicates you probably need about 700W for SLI: http://www.guru3d.com/article/geforce-gtx-560-ti-sli-review/14.  Probably a good 750W or 850W PSU would do the trick without breaking the bank.

Here is a review of the GX750. It is a budget unit, nothing wrong with that but the unit failed several tests. Not all Cooler master PSU's are bad.
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=188

yes sir it is! I guess I will sell the one I have, and get another one. :( Oh well it'll be worth it. Thanks guys for all the help!

owentheomen

get a single rail psu

The more rails the better, adds stability.  Altho I suppose there may be a point where too many rails is bad?  I dunno, I have 8 and that seems to be the sweet spot right now for SLI setups.  Now for me to get a SLI setup : P

HeavyHemi

boylerya

owentheomen

get a single rail psu

The more rails the better, adds stability.  Altho I suppose there is a point where too many rails is bad?  I dunno, I have 8 and that seems to be the sweet spot right now for SLI setups.  Now for me to get a SLI setup : P

My AX 1200 would beg to differ.  The defining difference between most 'single rail' and 'multiple rail' units is how the output is divided not how the output is generated. You can use the exact same source and create a single rail unit or a multiple rail unit. So one design, isn't inherently more stable than the other. Some like multiple rails because the output on each rail is limited and has protection against over current/over voltage. Multiple rails require you to pay attention to how you connect to each rail so you don't overload one. A singe rail design on the other hand, has it's full output available on every output. So, there isn't a requirement to balance loading on the rails. Folks will argue pro and con for each. Functionally between each, for high quality units, it's a matter of personal preference not real world performance.

ANTEC LIED TO ME!!! 

Hmm, I just look at the power efficiency to  determine what to buy.

what do you guys think about this psu:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4668507&CatId=2534
i think im gonna get that one.
also it would work for him i think.

EliteGeek91

diegorubeus

what do you guys think about this psu:

i think im gonna get that one.
also it would work for him i think.

That's good. Here's two more for alittle cheaper, but not for sure exactly which is best.

That's just the bronze certified edition, or I should say revised edition.

SLi ready usually doesn't mean any SLi pair you want, so you have to look at the specs to be certain.
 
nVidia's website states each reference GTX560 Ti draws 170W (14.1A at 12v), the slight frequency bump of the Max Ed isn't that much extra power, so add another amp and make it 15A to be safe.  Two makes 360W, or 30A at 12v, just for the video cards.  The CPU is around 90W* also drawn at 12v.  So the total for just these components is merely 450W, or 37.5A -- your PSU's 52A covers this pretty well.  It is unlikely the rest of your components draw more than the difference on the 12v line to make a difference, so your power supply just happens to be in the green.
 
If you get to overclocking the CPU to 5GHz, you double your CPU power requirement and the grand total ends up at 45A draw for 12v, or 540W.  Guess what, you are still meeting the minimim with your power supply, as I highly doubt the rest of your components draw another 8A. 
 
Your fans and drives have their power specs on their labels, if you want to take a look.  The Cougar Point chipset that is in LGA1155 board is just a glorified southbridge and dissipates less than 6.1W of heat (that's what TDP means, it is just a category), so it may draw around 7-8W of electricity, but not at 12v.
 
Respectfully to others suggesting more than 650W since they still provided useful information to others, it doesn't apply to you.  I just showed your what you could expect and the kinds of research you should be doing to give yourself the advantage.
 
* Recently a preview pit the AMD FX-8150 with i7-2600K revealed the power draw of the 3.4GHz quad with HT at 93W of electrical power draw (not the heat value, which may be around 80W) at stock.  2500K is only slightly slower, so I made a call at a 90W draw stock.  I have a link in my sig that can estimate the increase in wattage levels for an overclocked CPU, check it out when you can.

boylerya

lehpron

SLi ready usually doesn't mean any SLi pair you want, so you have to look at the specs to be certain.

nVidia's website states each reference GTX560 Ti draws 170W (14.1A at 12v), the slight frequency bump of the Max Ed isn't that much extra power, so add another amp and make it 15A to be safe.  Two makes 360W, or 30A at 12v, just for the video cards.  The CPU is around 90W* also drawn at 12v.  So the total for just these components is merely 450W, or 37.5A -- your PSU's 52A covers this pretty well.  It is unlikely the rest of your components draw more than the difference on the 12v line to make a difference, so your power supply just happens to be in the green.

If you get to overclocking the CPU to 5GHz, you double your CPU power requirement and the grand total ends up at 45A draw for 12v, or 540W.  Guess what, you are still meeting the minimim with your power supply, as I highly doubt the rest of your components draw another 8A. 

Your fans and drives have their power specs on their labels, if you want to take a look.  The Cougar Point chipset that is in LGA1155 board is just a glorified southbridge and dissipates less than 6.1W of heat (that's what TDP means, it is just a category), so it may draw around 7-8W of electricity, but not at 12v.

Respectfully to others suggesting more than 650W since they still provided useful information to others, it doesn't apply to you.  I just showed your what you could expect and the kinds of research you should be doing to give yourself the advantage.

* Recently a preview pit the AMD FX-8150 with i7-2600K revealed the power draw of the 3.4GHz quad with HT at 93W of electrical power draw (not the heat value, which may be around 80W) at stock.  2500K is only slightly slower, so I made a call at a 90W draw stock.  I have a link in my sig that can estimate the increase in wattage levels for an overclocked CPU, check it out when you can.

170W?!?!?! That sounds like the idle power consumption.  I posted this link in the third post on this thread.  Please explain how these guys are showing peak consumption of 358W, and you are saying its not gonna go much over 170W.
http://www.techspot.com/r...-gtx-560ti/page11.html
Given I am no expert on PSUs, but I dont see how these numbers could be that different.

The 170 watt consumption was just for a single GPU at full load, not an entire system.

so i read the first paragraph and nothing else lol So what your saying, I might be ok with this? Just my overall usage percentage will be well above %50?
 

Cooler Master's GX series power supplies are terrible.  Get yourself a Seasonic X-660.
 
http://www.microcenter.com/single_product_results.phtml?product_id=0352230

RainStryke

Looks like they put out a revision of the GX650 that does ehh... Well, a lot better than the first one.

If this is the model you have, you should be fine:
http://www.kitguru.net/components/power-supplies/zardon/cooler-master-gx650-bronze-power-supply-review/

If you have the regular 80 plus version, not even a chance.

 
Holy cow, that's in the same performance range as the Antec TruePower New series and revised Corsair TX lineup.