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Protocol · ‎11-25-2013

I would like to get some input and self-validation from the pros here... 4.7 GHz only requires 1.368v for 100 percent stability, but I can also run 4.9 GHz at 1.408v. That's not a massive increase in voltage - not small, but not overly degrading I believe.

Pertinent settings below:

--3970X @ 4.9 GHz--

vCore - 1.408 - 1.416 @ 100 percent load (IBT)
VTT - 1.175
VCCSA - 1.175
PLL - 1.775
CPU LLC - Regular
CPU Current Limit - 180%
C-States - All disabled except for C1E
SpeedStep - Enabled
HT - Enabled

I am running the memory at 1866, regular LLC as well. 1.55v DRAM voltage for stability. Temps max out with IBT at 82C. Idle at 32C. Hard-gaming - 60C. I don't fold, bench, etc. Simply 50/50 gaming/workstation.

Would you guys run this 24/7 if it was your rig?

Thanks in advance!

-Lee

HiVizMan · ‎11-26-2013

With that cooling you are good to go. Nice CPU and very nice system.

To help us help you - please provide as much information about your system and the problem as possible.

Protocol · ‎11-26-2013

Thanks HiViz! I appreciate the feedback. These extreme series CPU's natively require so much more voltage than the other SB-E and IVB-E so it sort of throws me off sometimes - I just like to get community feedback : )

The jump to 5.0 GHz is sick though... 1.44v minimum, and I can't keep the temps down during any stress tests. 4.9 GHz is definitely maxes the heat coefficient of my water loop at room temperature.

HiVizMan · ‎11-26-2013

Looks like 49x is your tipping point mate. I would be happy with that myself.

To help us help you - please provide as much information about your system and the problem as possible.

Zka17 · ‎11-27-2013

I think that those settings from the OP are safe for 24/7, specially if the temps are not going over 75C during your regular usage...

I would not stress the CPU too much with IBT, if the system is stable enough for your needs (games/work) then that's it...

Protocol · ‎11-27-2013

Thanks Zka17. I am in full support of HiViz's thoughts with stress testing - they cause too much tunnel vision concerning stability. I usually only run about 10 passes of IBT and maybe an hour or two of P95/RealBench to test things out, mainly both for stability and heat saturation in my loop.

I did eventually get a BSOD 101 which I got stable by upping vcore to 1.42v. Not worth the extra wattage I think, so did back it back down to my normal 4.8 GHz though as 4.9 GHz just didn't show enough improvement for 24/7 usage, or in benchmarks. 4.8 GHz hums along at 1.389v just fine and knocks a few degrees off the the max core temps.

I thought 4.9 GHz might have been the sweet spot, but it appears that 4.7 - 4.8 is. Still, the silicone lottery has been good to me I'd say.

Feedback/Input on 3970X overclock