Power on and power off

[BenTed]

Hi,

HARDWARE:
Rampage V Extreme (BIOS 1302)
5960X @ 4.3Ghz (1.313v)
G Skill Ripjawz 2666 (15-15-15-35 2T) (1.2v) (8GB total)
2 x 7970 GPU in CF
Corsair 1200 watt PSU (AX1200)
Water cooled on custom rad set up with 4 rads temps stay at around 35-42c max underload.

I only have the CPU and RAM voltages set everything else on auto.

I have min CPU and max CPU cache set to 30 for a 3.0 minimum and a 43 on the turbo.

I am finding that once every few days or so when I turn on the PC from been turned off that it will power back off
like it's doing a power on and power off test when you make a change to the BIOS (but I have not made any changes) and I usually cannot get
into windows. It hangs around where you just get onto the desktop.

But at all other times I'm getting onto the desktop fine and passing stress testing. Game fine and general usage is fine.
I've updated the BIOS a few times now trying to solve this issue without luck.

What usually causes this?

[Chino]

If this only happens when the system is overclocked, then your overclock might not be as stable as you think. If it also happens on stock settings, then something else is wrong.

[BenTed]

Hi,

I have my ram now set at 2133 left the stock timings the same.
Is the best way to disable all cores and keep just one then push the voltage but not going above 1.35v?
The water cooling is ample to keep things cool.
But volts wise. If I have 1 core enabled and rest disabled. Can I expect to be able to find
the wall easier as the voltage would solely be used for one core?
Or is doing it that way only any good if heat is an issue?

Also could it be any other settings I need to alter from AUTO?

Thanks

EDIT:
System is fine at stock. I'd run the system for a good while at stock before I overclocked it.

[Chino]

Yes, it's always a wise decision to make sure your system is stable at stock before overclocking. It will save you a lot of future headaches. 😉

No, there is no need to disable any cores. Overclock your CPU with all cores active. There is no official safe voltage per say. But most would agree to stay below 1.35V. Heat is another issue so yes, make sure you have adequate cooling if you plan to find your maximum overclock. You can leave the settings on Auto. Just move the CPU multiplier and vcore.

[BenTed]

Thanks for your reply.

So potentially I could have an issue where my CPU won't do 4.3Ghz stable even if vcore was not an issue?
I'm figuring that the IMC should easily do 2133 or even 2400, right?

So changing the "CPU Input" from AUTO to 1.9 would not help?

[GoNz0-]

I was told this was the memory training.

[drop4205]

4.3 at 1.3 damn in at 4.3 at 1.17 now and all stable. The memory training of on off etc only should happen after a change to it in the bios and not after a few days or so. All the cables are connected properly? I had a pin in one of mine that wasnt seated all the way in in the connector before. Have you tried a different psu? The 1200i I had was an issue with it and got it replaced. Just a thought

[GoNz0-]

as I am stable at 4.4 1.28v with a cache at 4ghz I am not that worried about the odd memory training. PSU is getting old but it is rated for Haswell-E (Enermax 1250w)

I blame it on the flakey BIOS that asus keep throwing out but I don't let the odd one bother me at the moment.