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[Video Tutorial] BIOS tweaks to reduce CPU temperature
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This guide shows how to reduce the CPU core voltage in the BIOS to lower the temperature under load. I achieved -5 degrees Celsius by simply changing the BIOS settings.
The CPU core voltage is the voltage the CPU needs to run at a certain frequency. Different chips require different voltages, so manufacturers increase this voltage significantly for safety reasons. As a result, CPUs are stable but hot.
By experimenting with the core voltage, you can lower it in most cases. Less voltage means less heat, and less heat means the CPU can run at a higher frequency (without thermal throttling) or consume less power (useful for notebooks).
I use offset mode, which means that a certain value is subtracted from the standard voltage. -0.075 volts is quite a lot, not every chip can achieve that, but some chips can do even more. This is called silicon lottery.
The strategy to find the actual voltage required for your CPU is to set it to a high value (e.g. -0.1 volts) and then reduce it by -0.0125 volts until you can boot Windows. Then run a memory stability test (e.g. Prime95) to see if there are any errors. Continue reducing the offset until Prime95 no longer shows any errors.
And don’t forget to enable “Cool and Quiet” as it will reduce CPU frequency and voltage when idle.
The CPU core voltage is the voltage the CPU needs to run at a certain frequency. Different chips require different voltages, so manufacturers increase this voltage significantly for safety reasons. As a result, CPUs are stable but hot.
By experimenting with the core voltage, you can lower it in most cases. Less voltage means less heat, and less heat means the CPU can run at a higher frequency (without thermal throttling) or consume less power (useful for notebooks).
I use offset mode, which means that a certain value is subtracted from the standard voltage. -0.075 volts is quite a lot, not every chip can achieve that, but some chips can do even more. This is called silicon lottery.
The strategy to find the actual voltage required for your CPU is to set it to a high value (e.g. -0.1 volts) and then reduce it by -0.0125 volts until you can boot Windows. Then run a memory stability test (e.g. Prime95) to see if there are any errors. Continue reducing the offset until Prime95 no longer shows any errors.
And don’t forget to enable “Cool and Quiet” as it will reduce CPU frequency and voltage when idle.
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