What motherboard would you recommend for an AMD FX build, with the possibility of SLI in the future? I'm not intending to do much overclocking, so...
Oh, the 8350.
My personal recommendations would be either the ASUS M5A99X EVO R2 or the Gigabyte GA-990FXA-UD3. I'd consider both of them to be roughly equivalent, so the choice between them is entirely preference.
I'd avoid MSI's 970A-G46 if you plan to do even a little overclocking, as it doesn't seem to be designed to handle that kind of stress (weak VRMs).
+1 for that Asus M5A99X EVO R2 motherboard.
But the thing is that it runs sli/crossfire in x8 mode.
If you want to sli/crossfire in x16 mode, then you need a 990FX based MB.
I would go with the M5A99FX R2.0 or M5A99X EVO R2.0.
Both are very solid boards with mature and solid UEFIs which are critical. This helps to ensure solid compatibility, interoprability and performance as well as general overclocking.
You did not note overclocking specifically but there are nice quick options like TPU within the UEFI where you can bump the FX cpu up very easily ( if you are getting an overclocking part you might as well use it a little )
In this respect both are equal and other solid high amperage inductors ( chokes with a VRM heatsink and extensive UEFI options for tuning ). Most importantly the digital controller offers very good loadline calibration options which is important. This is due to the high amount of voltage general needed for overclocking AM3+ CPUs.
I have personally clocked both boards between 4.6GHz to 4.8GHZ and between 2133 to 2400 on the memory ( this is assuming you have the cooling and CPU that can accomplish this.
Overall though solid and stable boards with great additional functions as well.
Some of the nice items are
Digi+ VRM Advanced digital controller for the CPU/VRM assembly offer superior power delivery with robust options to control and tune the board.
USB 3.0 Boost Specialized controller with firmware that allows for optimized modes of bus operation for USB 3.0 ports. When shifted into Turbo or UASP modes can considerably improve the performance of flash drives or high speed external drives.
USB Bios Flashback A specialized hardware implementation that allows for direct UEFI ( bios ) updating or recovery. It can be executed even if the system fails to power on or post. Additionally it can be executed without CPU, Memory or Graphics Card being installed. All that is required is a PSU to be connected and powered on.
FanXpert+ Advanced manual fan controls with customized fan curve support for carefully tuning cooling performance and acoustics for your CPU and Chassis fans.
Overall while it will not impact real world performance due keep in mind that AMD FX cpus do not currently support PCIe 3.0. Regardless PCIe Gen 2 even 8X offers more than enough bandwidth for SLI or Crossfire.
Hope this helps. Best of luck with your build.