Can undervolting improve performance of an i7-8650U CPU on a Dell Latitude 7390 laptop using ThrottleStop?
Can undervolting improve performance of an i7-8650U CPU on a Dell Latitude 7390 laptop using ThrottleStop?
since spam filter keeps messing up, i'm going to use bad english
laptop is having cooling problems
play low-end games at 20-30 fps
without turbo temps stay low unless you add cooling 70-80 then it throttles
turbo temps hit 90 degrees in 3 minutes and both Prochot and 0.4ghz slow down until restart
with external cooling it stays between 60-80 degrees
turbo with cooling lasts about an hour before hitting 90 degrees
i need to undervolt because the external cooling isn't comfortable
voltage control might be turned off in BIOS, i don't know how to fix it
some people say Dell/intel hide it from BIOS since it's an U series CPU
i want to learn how to safely undervolt this laptop
Hi, you might want to start by adjusting the thermal paste. Here is a guide and...
When I play games (like Rblox), I’m limited to two graphics settings. Even then, my laptop slows down after about ten minutes and reaches temperatures between 80 and 90 degrees. The turbo setting doesn’t improve the issue, since my machine also throttles quickly—within five minutes at similar high temps. The only fix I found was cooling the laptop externally. During turbo mode, I stayed around 70–80 degrees under load, and without turbo, it dropped to 60–80 degrees max, allowing me to play for an hour or a bit more. From what I understand, lowering the voltage could help.
I attempted to undervolt using Throttlestop, but it blocked me from adjusting the voltage. It seems certain CPUs, such as the i7-8650U, prevent access to voltage control from the BIOS. I’m unsure how to bypass this in the BIOS settings—I don’t even know how to open it without clear instructions. Others mention that Dell often hides options for voltage control and overclocking due to stability concerns.
Can someone suggest a safe way to undervolt my laptop with Throttlestop?
Hi, you might want to start by adjusting the thermal paste. Here’s a guide and some recommendations to help you pick the right one.
Also, make sure your laptop has the latest BIOS update available.
You can visit the Dell support page for drivers: https://www.dell.com/support/home/ro-ro/...op/drivers.
Make sure to enter your exact model, then try updating all drivers and testing. If the issue persists, consider taking the laptop to a service center for further evaluation.
The solution involved switching the thermal paste. Eventually, I sold that laptop, but after installing a newer, improved one with better cooling and a stronger CPU (i5 11400H), I changed the paste to Tf7 thermal paste. This reduced the temperature from around 70-90°C during load to 70-60°C under stress and as low as 40-50°C when idle or watching movies with background apps off. I could only purchase the paste a few months ago, which cost about $20 and required importing.