Best SLI/Crossfire setup for 650 watt PSU?

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hftvhftv

hftvhftv

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I currently have a Corsair HX 650 with a AMD FX 8350 and GTX 750 Ti base clock. I am looking to get some older cards in SLI preferably or CrossfireX. My performance spec that I am looking to meet or surpass is a EVGA GTX 760 FTW edition.
 
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650W is "tricky". The older units only had two PCIe plugs so you were limited to cards with only one plug needed. So 260X, 7850, 650TI, 550TI, etc. Anything with two plugs needed per card wouldn't work. (760, 560TI, 7870, etc.) Yours is a gold so I'd bet it has 4 PCIe plugs. That said, you are still probably better off with following the "rule" of the older 650s. Reason being you have a large wattage CPU and you don't want to push your PSU that much. (some of those dual plug cards would be 200W each, so 200+ 200+ 125 = 525, leaving very little for anything else.)

The issue here is two of those lower cards doesn't equal to very much. The ram amount is lower, and they just can't go as fast. I would return the 750TI and just get...
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Novuake

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First off, SLI is an Nvidia ONLY technology that allows you to pair 2 of the SAME cards to achieve better performance.
You will not be able to SLI the GTX750 ti with anything. It does not support SLI at all.

Crossfire is not possible either as it is an AMD ONLY technology.

EDIT : And 650W from a reliable manufacturer (Seasonic made one you have is VERY good) is good enough for any mid range SLI or Crossfire rig.
 
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hftvhftv

hftvhftv

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Sorry, I knew that I cannot use SLI with my 750 Ti I was wanting to sell it or trade it for an older generation SLI or CrossfireX setup.
 
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4745454b

4745454b

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650W is "tricky". The older units only had two PCIe plugs so you were limited to cards with only one plug needed. So 260X, 7850, 650TI, 550TI, etc. Anything with two plugs needed per card wouldn't work. (760, 560TI, 7870, etc.) Yours is a gold so I'd bet it has 4 PCIe plugs. That said, you are still probably better off with following the "rule" of the older 650s. Reason being you have a large wattage CPU and you don't want to push your PSU that much. (some of those dual plug cards would be 200W each, so 200+ 200+ 125 = 525, leaving very little for anything else.)

The issue here is two of those lower cards doesn't equal to very much. The ram amount is lower, and they just can't go as fast. I would return the 750TI and just get a 770 or 280X. These are 200-250W cards which frees up ~150W from the SLI/CF idea, perform similar to the SLI/CF setup of the cards I've mentioned previous, and doesn't introduce SLI/CF issues into your system. A much better idea overall.
 
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JUICEhunter

JUICEhunter

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You have a few options:

Cheapest NVidia solution is 2x 650ti boost @ ~ $300

For AMD you could go 2x 7790/260x @ ~ $250

Why not get a 770/280x if you have the budget/power? There is a reason gamers choose these single cards over sli crossfire setups to upgrade their graphics.
 
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Mousemonkey

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Both of my HX620's only have two PCIe connectors and yet both have been used to run two cards that each required two six pins, all has worked OK and neither PSU has gone pop.
 
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