After much experimentation i have settled on a 4.81Ghz - 24/7 Stable Overclock. I have found this cpu's limit of around 5.2Ghz , but for daily use i will settle for 4.8Ghz. Perhaps with better cooling i could achieve 5.2Ghz+ but i wouldn't want to run it that high daily so no point in splashing out that kinda money for short gains.
IBT Stability tests > 16Gb Kingston Genesis HyperX @ 1600Mhz 9-9-9-24 1.65v
Maximum RAM @ 14Gb x 10 runs = Stable
Very HIgh RAM @ 4Gb x 40 runs = Stable
High RAM @ 2Gb x 50 runs = Stable
Standard @ 1Gb x 50 runs = Stable
Socket MAX temp = 67c Core MAX temp = 57c Motherboard MAX Temp = 23c
Anyway since i have been spending the last few days tinkering i thought id post my BIOS settings as it may prove helpful to someone with the same or similar motherboard.
Sabertooth 990FX Rev 1.0 > BIOS = 1604
CPU = FX8350 > Batch = 1234
Overclocking = Manual ( not D.O.C.P )
Turbo = Disabled
CNQ = Currently on to reduce power @ idle
C6 & Other = OFF
RAM = Auto ( 1600Mhz 9-9-9-24 @ 1.65v )
CPU LLC = Very High 75%
NB LLC = High
CPU Current capability = Auto ( adjust to 110-120 can help )
NB Current capability = Auto " as above "
Multiplier = 24 x
FSB = 200.0
HT etc @ 2200
Voltage Manual Adjust = 1.475 ( CPUZ Idle 1.476 Load 1.488v )
At 4.51Ghz i require only a voltage adjustment to 1.36v with the same settings as above.
I have to say that running @ 4.8Ghz this cpu just seems to fly, it runs Cinebench like butter and all my work in Adobe is super speedy. Anyway i hope this helps someone