Crossfire PCIe slot question

[nigel_17_hockey]

I am thinking about getting another r9 290 tri-x to go with my first one but not sure if my motherboard will use it to its full potential. My mother board is:

ASUS ROG Strix H370-F Gaming LGA1151 (Intel 8th Gen) DDR4 DP HDMI DVI M.2 H370 ATX Motherboard with USB 3.1 Gen2

This is what it says about its PCIe x16 slots:

1x PCIe 3.0 x 16 slots (Supports x16 mode); 1 x PCIe 3.0 x 16 slot (max. at x4 mode)

Does my motherboard FULLY support two r9 290's?

Also is 650w psu enough to support it?

THANKS

 

[Eximo]

Technically, yes, Crossfire is supported. But you do only have 4x lanes to that second x16 slot.

You would be better off selling your R9-290 for what you can get for it and buy a new GPU.

Vega is still a bit pricey, but I think I saw a Vega 56 for $434 new. Used Nvidia cards are flooding the market right now though. I saw GTX1080 as low as $350 (most were around $400)

 

[nigel_17_hockey]

Interesting, I found a good deal on a 290 so I was just considering.. a 1080 for $350 would be more than ideal however lol.

Thanks!

 

[Rogue Leader]

16x/4x works for Crossfire but is the worst in terms of performance. Crossfire is also only supported in some games and 2 R9 290's in Crossfire are going to hammer that PSU, you'd really want more like 750w minimum. Better off taking your budget. selling your 1 290 and buying a 1070, 1080, or Vega 56 or 64.