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Mini itx SLI question

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  • Gtx
  • Cases
  • SLI
  • Components
Last response: in Components
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October 3, 2014 6:35:30 PM

Hi, I have an Alienware x51 R2 and am planning to move it to an NZXT H440 case allowing for upgrade room. Will I be able to move my motherboard, which is a mini itx, to a new case and run two Gtx 780 GPUs in SLI? If so, can I take my old GPU which is a gtx 745 and run it in SLI with a gtx 780 with a 750w PSU?

More about : mini itx sli question

October 3, 2014 6:43:44 PM

1) You can't run a GTX 745 with a GTX 780 in SLI. You can only SLI 2 of the same graphics card (e.g 760/760, 770/770, 780ti/780ti etc.)
2) You will be able to move your motherboard to the new case.
3) For SLI, the motherboard needs to have support for at least PCIe (x8/x8).
4) The powersupply should be able to run 2 780s, what is the model and make of the PSU?
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October 3, 2014 6:45:37 PM

No.
ITX motherboards have only one pcie x16 slot.

sli depends on two equal cards working together.
GTX745 and GTX780 will not work together.
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October 3, 2014 6:46:24 PM

The PSU is a 'Corsair Builder Series CXM 750W Modular 80 PLUS Bronze Certified ATX/EPS PSU'. Thank you for your answers.
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Best solution

October 3, 2014 6:48:16 PM

No, the motherboard doesn't support SLI, in fact it doesn't even have 2 16x pci-e slots. Changing the case will not fix that problem. Also you can't SLI a gtx 780 and a GTX 745. With SLI the gpus have to be the same and the vram also has to match. The GTX 745 doesn't support SLI at all. There are no SLI capable mini itx motherboards.
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October 3, 2014 6:49:19 PM

So shall I upgrade the motherboard? I'm trying not to go over £500 however, and the GPU + PSU + CASE comes to £425. So the most I can spend on a motherboard is £75.
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