SLI w/ Non-SLI Power Supply

[ja3s]

Is it possible to run SLI on a non SLi ready PSU? I have a 560ti and would like to run SLI. I'm running a CM GX650w psu, atm.

If not, what's a good wattage to get to be on the safe side?

 

[leandrodafontoura]

You could, but I dont advise it.

 

[HugoStiglitz]

a "SLI Ready" Psu will refer to 2 factors.

1. Power Rating (enough watts to power a SLI rig)
2. Avaliable Connectors. (e.g. enough 6&8 pin connectors to power 2 cards)


so to check if you'll have enough juice put ur system specs in
extreme.outervision.com/psucalculatorlite.jsp

as for enough connectors, well not the end of the work but you may have to purchase some adapters.

 

[Rizlla]

I would say you could do it, but only if you have a decent PSU. I don't trust Coolermaster PSU's.

 

[jsc]

The GX650 is, at best, a mediocre power supply with just 2 PCIe power connectors and a single 12 volt 52 amp output:
http://www.hardocp.com/article/2010/11/22/cooler_master_gx_650w_power_supply_review/

A pair of GTX650Ti's needs about 27 - 30 amps. Figure another 10 - 12 amps for an OC'd CPU. Figure another 100 watts or so for motherboard, RAM, drives, and fans and I estimate that you will be running the PSU at around 85% load.

You could do it using adapters for the other two PCI connectors, but I would not recommend it. I would suggest a better quality 750 - 800 watt unit.

 

[ja3s]

Thanks. Guess it's time to look for a better psu.

 

[jyjjy]

This is a good deal and should handle SLIed GTX 560 Ti's
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371044