CAUTION:
The FX 8350 is NOT on the supported CPU list for that board. The 95w FX 8300 is, but the 8350 is a 125w+ CPU. Every CPU on the list that IS supported is 95w or less. And their Specs page says "Supports CPU up to 95 W".
The FX 6300 is actually a good alternative to the 8350. It is a 95w 6 core CPU and will still perform well for most games and apps.
If you are comitted to using an FX 8350, then you need a different board, preferably one with a 990FX chipset and good VRU/VRM.
If you have already purchased both the board and CPU, the safest course of action is to down-clock the CPU or disable turbo core or disable one of the core pair modules on the CPU (* not supported in some BIOS) to drop it to 6 cores. It will work like a 6 core and draw less power until you can replace your board. If you cannot disable the cores in the BIOS, there *may* be a way to tell Windows not to use all the cores but keep 2 of them parked, but I cannot remember where I read this.