Overclocking i5 6600k on Z170A
So it seems that auto voltage doesn't like to go above 1.22v which is only enough for 4.0Ghz, however setting more voltage manually decreases clock speed. I'm completely lost on what is happening.
Temperatures have no affect, CPU fan is running at 5-10% (even on load) when stock and achieves 50C load 25C idle, but for sanity check I did one run with CPU fan always at 100% .
All results below under full load (stress test)
Stock: clock speed stable (doesn't change) at 3.6Ghz
1.25V/4.2Ghz: clock speed unstable (always different), averages 3.9Ghz
1.36V/4.0Ghz: clock speed unstable, averages 3.4Ghz (below base clock)
1.3V/4.4Ghz/Cpu Fan Always MAX: clock speed unstable, averages 3.7Ghz
Auto Voltage(1.2-1.22V)/4.0Ghz: clock speed stable at 4.0Ghz
Auto Voltage(1.2-1.22V)/4.2Ghz: clock speed unstable, averages 4.0Ghz
Auto Voltage/4.4Ghz: Instant blue screen
TL;DR
1.25V = 3.9Ghz
1.3V = 3.7Ghz
1.36V = 3.4Ghz (below base clock)
So it seems that auto voltage doesn't like to go above 1.22v which is only enough for 4.0Ghz, however setting more voltage manually decreases clock speed. I'm completely lost on what is happening.
Temperatures have no affect, CPU fan is running at 5-10% (even on load) when stock and achieves 50C load 25C idle, but for sanity check I did one run with CPU fan always at 100% .
All results below under full load (stress test)
Stock: clock speed stable (doesn't change) at 3.6Ghz
1.25V/4.2Ghz: clock speed unstable (always different), averages 3.9Ghz
1.36V/4.0Ghz: clock speed unstable, averages 3.4Ghz (below base clock)
1.3V/4.4Ghz/Cpu Fan Always MAX: clock speed unstable, averages 3.7Ghz
Auto Voltage(1.2-1.22V)/4.0Ghz: clock speed stable at 4.0Ghz
Auto Voltage(1.2-1.22V)/4.2Ghz: clock speed unstable, averages 4.0Ghz
Auto Voltage/4.4Ghz: Instant blue screen
TL;DR
1.25V = 3.9Ghz
1.3V = 3.7Ghz
1.36V = 3.4Ghz (below base clock)
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