Questions: 6700K 4.5Ghz On Air @1.350v First time Overclocking

EpicSurvivor

Golden Member
Aug 14, 2012
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Just learned how simple it is to do a basic Overclock. I managed after testing for 2 days during the storm that hit the east how to overlcock my 6700K for the first time. I managed to pull 4.5Ghz on Air using the Cryorig M9i @1.350v I ran RealBench for 4 hours and had no issues, temperatures maxed at 87c. Yes I know this is pretty high and I should get a better cooler but that's not my objective right now, I am just testing the waters and learning.

#1 Is it harmful for my CPU to run @1.350v?
#2 My Idle temperatures went up from from 31-35c to 38-40c on idle after the overclocking. Is this normal? is there a way to fix it?
#3 My CPU Idles at 1.332v on HWMonitor on my Desktop with nothing running and it doesn't go down but when stress testing it does go down to a "Value" amount of 1.290v or 1.255v which seems more in the normal end of things. Is this normal?

How can I fix #2 and #3?

Thank you so much.
 

Campy

Senior member
Jun 25, 2010
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1: No, just keep temps under control. I wouldn't want to go over 1.4v for a 24/7 overclock, and preferably stay at or under 1.35v at all times.

2: Idle temps are largely irrelevant. When you increase voltage your temps will increase so yes it's normal.

3: If your chip is stable at 4.5GHz 100% load 1.25v that's pretty good. It's normal for voltage to drop under load, it's called vDroop. Most motherboards have a setting called Load Line Calibration (LLC) that counteracts this effect.

If your chip really is stable 4.5GHz 1.25v you should set your voltage to 1.25 in BIOS and adjust the LLC level so that the voltage stays at or very close to that under full load aswell. Try a medium-high LLC setting, I'm not sure how Gigabyte labels their LLC.

Also I'm not sure how good Realbench is for stability testing, you might want to try Prime95 26.6 or Intel Burn Test to name a couple.
 

EpicSurvivor

Golden Member
Aug 14, 2012
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3: If your chip is stable at 4.5GHz 100% load 1.25v that's pretty good. It's normal for voltage to drop under load, it's called vDroop. Most motherboards have a setting called Load Line Calibration (LLC) that counteracts this effect.

If your chip really is stable 4.5GHz 1.25v you should set your voltage to 1.25 in BIOS and adjust the LLC level so that the voltage stays at or very close to that under full load aswell. Try a medium-high LLC setting, I'm not sure how Gigabyte labels their LLC.

Thank you for all your feedback appreciate it.

My question is And yes I am using the Gigabyte board on my Signature. I don't know how to set the Voltage in a way that it doesn't stay at 1.332v on Idle, this is what is referred to as Fixed Voltage (I assume is the same for all MoBo's) I read that both offset and adaptive allow the Voltage to go lower/down during Idol operations but fixed doesn't allow the voltage to go down, what I have now is Fixed and I don't know how to change it. I just don't see those options for that in my Motherboard BIOS. Would like my Voltage to go down when Idle not set fixed at a constant 1.332v

Any idea on how to fix this or what to change? Would really appreciate it. Other than that my 4.5Ghz on @1.350v is running wonderful thus far.

Thanks in advanced.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,415
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I OCed a rig I sold a friend some time back, using a B150 K4/Hyper board, and BCLK OCed an i5-6400 to 4.5Ghz, or so I thought. It ran Windows 10 just fine, but when it came to stress-testing, temps got too high. I had a Zalman 92mm heat-pipe cooler on there, and it wasn't quite enough for stress-tests at those settings (similar to yours).

Unfortunately, what I thought was stable at my place, was not stable at his place for gaming, so we had to down-clock it a bit.
 

EpicSurvivor

Golden Member
Aug 14, 2012
1,044
48
91
I OCed a rig I sold a friend some time back, using a B150 K4/Hyper board, and BCLK OCed an i5-6400 to 4.5Ghz, or so I thought. It ran Windows 10 just fine, but when it came to stress-testing, temps got too high. I had a Zalman 92mm heat-pipe cooler on there, and it wasn't quite enough for stress-tests at those settings (similar to yours).

Unfortunately, what I thought was stable at my place, was not stable at his place for gaming, so we had to down-clock it a bit.
Wow! that's weird.
 

EpicSurvivor

Golden Member
Aug 14, 2012
1,044
48
91
So there really isn't an option in BIOS for my Vcore to drop during idle operations? I am staying at a constant 1.335 on idle and it doesn't make sense. I am kinda new so not sure what I need to do.