Cpu voltage changing itself
- Thread starter Sentick
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panathas
Splendid
- Feb 12, 2014
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It depends on how your board is using that override voltage control. Some boards use it as the minimum and not the maximum voltage. So when your CPU gets stressed it automatically increases the voltage in order to keep your system stable. Also have you checked the load line calibration setting in your BIOS?
panathas
Splendid
- Feb 12, 2014
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You have to find it. It's very important to use it when you are overclocking. Search it in your BIOS, it should be close to the voltage settings. Search for something like LLC. What it does is try to keep your system stable by controlling the voltage supplied to your CPU when it is getting stressed and usually it prevents large voltage drops or sometimes voltage increases. It must be properly configured in order to control the voltage supplied to the CPU and avoid system crashes even damage to your CPU or motherboard in extreme overclocking cases.
okay i found it in the bios, it is set to auto, and there are manual levels which you can set (1-8), how do i know which to set without damaging my cpu? im thinking 6 to try but i dont know if thats higher than what its been setting it at
panathas
Splendid
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This setting won't damage your CPU, it just helps it avoid damage and make your system or your overclock more stable. You could start from 6 and test your system at each lever (6-8) to see the results. Also it doesn't heart to check your board's manual to verify what each setting is doing and what setting is low and which is high, just in case. It may help your voltage regulation and avoid those big upward spikes. If it doesn't help a lot try to lower your override voltage a little bit and test your system every time in order to make sure that it remains stable and doesn't increase the voltage that much during stress situations.
Have you tested your current overclock with lowest voltages or is your CPU only stable at this current voltage? What other voltage options does your board have besides override? Maybe you could try another option that has tighter voltage regulation and you could get at similar voltage levels but with lower spikes.
Finally you could try to lower your overclock a bit say at 4.5 GHZ and see if you could hit a lot lower voltage level with this new clock. It won't have much performance difference and you'll increase your CPU lifetime. Also make sure you have your CPU temp under control. You don't want it to overheat at high voltage levels because then it's not safe at all and you risk more than you gain. Good luck.
okay so i found out that the i locked the vcore in the bios to 1.38. That stays the same, however its the cpu coltage (VID) that fluctuates. I thought the cpu coltage and vcore were the same thing? Anyways ill look into the manual tomorrow as its late and i dont want to go digging around in the boxes
panathas
Splendid
- Feb 12, 2014
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VID is different than vcore and in various boards/CPUs/software they have different meanings. For example in Haswell CPUs and in HWMonitor (as the monitoring software) VID is the real cpu core voltage and vcore is the voltage of the voltage regulator circuit that supplies power to the entire CPU package (CPU cores, GPU, Mem controller etc). In every case the real CPU core voltage is fluctuating when your CPU is getting in different power states. For example when it is sitting idle doing nothing, normally it should lower it's clocks and it's voltage to lower power consumption, and when it is getting stressed with high CPU usage it is raising it's clocks and voltage to their maximum values.
Where are you checking your vcore and VID? Download CPU-Z and there you can watch your real CPU core voltage and see how it fluctuates between idle and load situations.
From what I can tell the vcore in your BIOS maybe the voltage regulator or the minimum (or maybe default) voltage set during stress situations and the VID is your real cpu core voltage that your board automatically applies in order to keep your system stable. Every BIOS manufacturer has different settings and each board manufacturer has different meanings and different options for those settings. You have to read your board's manual if you want to overclock and you have to know what you are doing in order to avoid any damage to our system. Also you have to read various online overclocking guides that are specific to your motherboard/CPU. You don't just set a voltage and a clock and you are done.
Where are you checking your vcore and VID? Download CPU-Z and there you can watch your real CPU core voltage and see how it fluctuates between idle and load situations.
From what I can tell the vcore in your BIOS maybe the voltage regulator or the minimum (or maybe default) voltage set during stress situations and the VID is your real cpu core voltage that your board automatically applies in order to keep your system stable. Every BIOS manufacturer has different settings and each board manufacturer has different meanings and different options for those settings. You have to read your board's manual if you want to overclock and you have to know what you are doing in order to avoid any damage to our system. Also you have to read various online overclocking guides that are specific to your motherboard/CPU. You don't just set a voltage and a clock and you are done.
panathas
Splendid
- Feb 12, 2014
- 1,108
- 16
- 30,315
Download CPU-Z and there you can see the fluctuations of the real vcore voltage of your CPU. If there it also goes up to 1.49, then you risk killing your CPU. Keep testing your system with the various LLC settings in your BIOS. If this doesn't work you have to lower the vcore in your BIOS immediately even if that means a lower overclock. That vcore voltage is too high even if it stays there only for 1 second. You could also try other vcore voltage options in your BIOS other than override but you have to lower it a lot.
Also, as I have already said, read your board's manual and various online overclocking guides that refer to your board/CPU. There you'll also find the limits of your CPU/board.
Also, as I have already said, read your board's manual and various online overclocking guides that refer to your board/CPU. There you'll also find the limits of your CPU/board.
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