I have this processor and i also had some stability issues when i installed it. Did you tune your bios setting? The stock setting are usually not good for this processor. You have to set the cpu the same way as a 8350 that is overclock to 4.7Ghz. Boost the voltage, CPU Load Line, etc. Took me a while but i got my Fx-9590 to be full stable for 24h on prime95 at 4.7Ghz no turbo boost on a 360mm aio kit. Since then i have no more crash on wake up or when i game.
Be sure to look at the right cpu temps and the VRM temps. these should not get pass 65-70 degrees celcius under heavy load (Prime95 or aida64 stability test or gaming) or you will get stability issues.
Try using only 2 ram stick.The more ram stick you have, the more demanding it is for the memory controller and this can affect the stability. Also its a dual channel controller so the best thing is to have 2(or4) ram stick of the same memory size for better ram speed. if you have 1 or 3 ram stick you get half the speed you could get with 2 or 4 stick
Asus sabertooth 990FX R3.0
EVGA Supernova p2 750w 80 plus platinum
16Gb Corsair vengeance 1600Mhz (2x8Gb)