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Too low voltage harmful?

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Last response: in CPUs
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December 26, 2012 2:13:35 PM

Hello

I recently started tweaking my 2500k and found out by Enabling PLL Overvoltage, LLC to 75% and putting CPU VTT to 1.20v (default was 1.10v) made me achieve above 4.4ghz speeds.

I'm currently testing 46x * 100 = 4.6Ghz, Vcore Offset +210mv gives me 111GFlops (Linpack with AVX).
But I'm experimenting undervolting and so far Offset +180mv gives me 110GFlops.

Now I would prefer lover voltage but is there any way that CPU gets harm with the fact I'm getting 1GFlops less thus the voltage might be slightly too low.

So, I could leave it at +210mv and Linpack reports 111Gflops.
Or I could leave it at +180mv and Linpack reports 110Gflops.

My next step is trying out +170, +160mv.

I might even aim for 4.7-4.8Ghz problem is that +180mv gives me 75/82/85/82/85c so Hottest core after Linpack is 85c.

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December 26, 2012 2:25:02 PM

Under volting does not cause any harm to the hardware. At worse the PC will become unstable just freeze.

The only possible harm would be to your operating system. Repeated reboots without shutting down properly can cause Windows to be unstable and the only fix would be to re-install everything. However, this would only happen it is done repeatedly and excessively.
December 26, 2012 2:29:29 PM

jaguarskx said:
Under volting does not cause any harm to the hardware. At worse the PC will become unstable just freeze.

The only possible harm would be to your operating system. Repeated reboots without shutting down properly can cause Windows to be unstable and the only fix would be to re-install everything. However, this would only happen it is done repeatedly and excessively.


Well the Linpack with AVX is wery demanding stress test and as long as it passes it (even if only 110GFlops) I should be able to avoid BSOD and crashes.

The only time I would reach high level of stress(100% load) is in games like BF3 and Max Payne 3, even then if it's 100% CPU load I think Linpack with AVX puts more pressure on CPU.
!