Loss of Stability?

[Mark Bartlett]

To make a somewhat long story shorter i decided i was ready to overclock after snooping around the forums here and watching appropriate videos on youtube and such. Initial oc i went all out for 4.7 and would only get blue screen/error code, so down i go. 4.6ghz ( with only changing cpu voltage{1.25v} and core ratio)boot, post, crash. Boot post start stre- crash. so again i go down. 4.5ghz. boot post everything seems happy. Aida64 for 9hrs and temps are floating around 70c+/-. All's well that ends well, or so it seemed. Getting ready for bed a last night i install Folding@home and let it run its course. 5-10min later i notice my pc rebooting, assume its a glitch but just in case start Aida64 again this time with the gpu stress test box checked as well. Approximately 2min later crash reboot. Same settings as i have had since last friday, only difference is the "gpu stress" from what i can tell. It dawns on me then that i had previously had folding@home installed during my overclocking attempts last week but uninstalled temporarily for an unrelated reason. Reboot check task manager 97% cpu usage for folding@home client as soon as i get to my desktop.

My Questions:
Why does my overclock work without "gpu stress", but with it it crashes?
Is there a faulty component in my system causing this?
If the latter is true and it has been throttling right from post does this mean higher oc's are possible?

Asus maximus VI formula
I7 4770k
16 gb 1866 corsair vengance
Corsair 860i 80+platinum
Corsair h100i
evga gtx780(2)

All setting stock Except:
Cpu input voltage 1.900
Cpu core voltage 1.25
Core Ratio 4.5
Min/max cache 3.5
Dram Freq. 1866 DDR3

If theres any information neglecting ill add asap. Any help is greatly appreciated!

 

[Brantyn Gerik]

It is more load on the cpu, you may have to increase the voltages slightly more, as well as check which setting you would need to change to increase the voltage to the pci lanes for more stability in sli mode