990FXA-GD80 + FX-8320 is no problem at all.
strange thing that a lot of people have issues with this mainboard and the 8350
come to think of it wen I upgrade 2 weeks ago from phenom 980be I manual set the memory clock to 1600 witch in the latest bios 11.13 and had a few blue screens the first day.
Kingston hyper x memory sold to run at 1600 MHz but its not stabel
reset is to auto witch resulted in 1333 MHz seems to have done the trick for me and its running perfectly at 18.5 x210 @3885mzh turbo 4200mhz.
strange thing about it that is is a 3500mhz cpu but it runs 18.5 x 200 3700mhz out of the box 1400mhz idle
hopefully the fix this issue for you 8350 users...its a little powerhouse the vishera cpu very happy with it sofar
CPU Type OctalCore AMD FX-8320, 3885 MHz (18.5 x 210)
Moederbordnaam MSI 990FXA-GD80 (MS-7640) (1 PCI, 2 PCI-E x1, 4 PCI-E x16, 4 DDR3 DIMM, Audio, Gigabit LAN, IEEE-1394)
Moederbord Chipset AMD 990FX, AMD K15
Systeemgeheugen 8161 MB (DDR3-1333 DDR3 SDRAM)
DIMM1: Kingston 9905403-198.A00LF 4 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 Mhz) (8-8-8-22 @ 609 Mhz) (7-7-7-20 @ 533 Mhz) (6-6-6-17 @ 457 Mhz)
DIMM2: Kingston 9905403-198.A00LF 4 GB DDR3-1333 DDR3 SDRAM (9-9-9-24 @ 666 Mhz) (8-8-8-22 @ 609 Mhz) (7-7-7-20 @ 533 Mhz) (6-6-6-17 @ 457 Mhz)
BIOS Type AMI (10/09/2012)