X99 Board for Three cards (TRI-FIRE or TRI-SLI) the second much more likely

[Lepton87]

What's the best motherboard for 5820 for TRI-SLI, right now I'm running only 2 cards but I want to have an option of running 3 cards be it NV SLI or AMD CF. I've heard that x99 platform has problems with SLI and especially multi-monitor but I use a single monitor right now. I want the board to not be more expensive then 300$ as I payed that much for top of the line ROG board but for X99 it must cost a small fortune and about DDR4 RAM I've got now 8GB 1866MHz DDR3 amd I want something a bit faster with double the capacity. would 2400MHz DDR4 be a nice compromise between price and speed?

 

[DooKey]

I think the best budget X99 board is the MSI x99s SLI PLUS. It can do tri-sli with a 5820 @ x8/x8/x8.

It's a great budget board. I'm running it with a 5820K and it is doing 4.5ghz@1.225v

The MSI boards have lots of features all the way down to the SLI PLUS.

I would go for 2666 DDR4 because it isn't much more than 2400 DDR4 and the board can run the 2666 at 100 bclk.

 

[UaVaj]

any other brand/board supports 8x/8x/8x with 5820k.

the msi has all the gpu sandwiched together. looking for a slot 1, slot 4, slot 7 spacing leaving 1 slot in between.

 

[mistersprinkles]

any other brand/board supports 8x/8x/8x with 5820k.

the msi has all the gpu sandwiched together. looking for a slot 1, slot 4, slot 7 spacing leaving 1 slot in between.

All boards will support 8/8/8 on a 5820K. The CPU has 28 PCIE lanes. 3X8 is 24.

If you want 16/16/16 look at the ASUS X99 WS as it has dual PLX chips. A little pricey though.

 

[UaVaj]

8x/8x/8x is not the problem. it is the 1/4/7 slot spacing that is far and few if any.

 

[mistersprinkles]

If you're hellbent on 1/4/7 then you'll have to wait until such a board comes to market or settle for squished together GPUs.

For anything other than benching, 3 gpus is unnecessary though.