Hello everyone, I’ve noticed a strange issue with my laptop – my hands feel a difference in temperature between the keyboard when it’s connected to AC compared to DC, even when the laptop is idle. Although there was a noticeable temperature variance (confirmed by HWinfo), I didn’t observe any performance differences.

Unable to find any information online, I recently decided to delve into the registry settings to investigate power configurations stored for AC (plugged in) and DC (on battery) modes. I’ve compiled a list of a few settings that I discovered and will share them here in the hopes that it may benefit others who are curious:

While the list is short, adjusting these settings has now made the temperature difference negligible without affecting the PC’s speed noticeably. By aligning the values for AC with the default DC settings, I’ve managed to resolve the warmer temperatures associated with AC power without compromising performance. It’s also possible to tweak the settings to optimize CPU response for DC usage. This behavior seems to be inherent in Windows, at least on my Dell machine.

It should be noted that these adjustments primarily impact idle or light computer usage and won’t enhance the cooling performance of the system, which becomes relevant under heavy usage scenarios.

Here are the specific registry settings I modified:

[…list of registry settings…]

Additionally, for those interested in fine-tuning CPU-related settings, the following adjustments can be made:

[…CPU-specific registry settings…]

By making these adjustments, you can potentially tailor your laptop’s power settings to better suit your usage preferences and possibly manage temperature differentials between AC and DC power sources.

​Hello everyone, I’ve noticed a strange issue with my laptop – my hands feel a difference in temperature between the keyboard when it’s connected to AC compared to DC, even when the laptop is idle. Although there was a noticeable temperature variance (confirmed by HWinfo), I didn’t observe any performance differences. Unable to find any information online, I recently decided to delve into the registry settings to investigate power configurations stored for AC (plugged in) and DC (on battery) modes. I’ve compiled a list of a few settings that I discovered and will share them here in the hopes that it may benefit others who are curious: While the list is short, adjusting these settings has now made the temperature difference negligible without affecting the PC’s speed noticeably. By aligning the values for AC with the default DC settings, I’ve managed to resolve the warmer temperatures associated with AC power without compromising performance. It’s also possible to tweak the settings to optimize CPU response for DC usage. This behavior seems to be inherent in Windows, at least on my Dell machine. It should be noted that these adjustments primarily impact idle or light computer usage and won’t enhance the cooling performance of the system, which becomes relevant under heavy usage scenarios. Here are the specific registry settings I modified: […list of registry settings…]Additionally, for those interested in fine-tuning CPU-related settings, the following adjustments can be made: […CPU-specific registry settings…] By making these adjustments, you can potentially tailor your laptop’s power settings to better suit your usage preferences and possibly manage temperature differentials between AC and DC power sources.  Read More

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