Question Is it Possible to undervolt a i7 8650u in a Dell Latitude 7390 with Throttlestop

[Sekaiichi no baka]

So a year ago, I bought a Dell Latitude 7390. It has an i7 8650u, 16 gigs of RAM, and a 256 GB SSD. I bought the laptop because of it's specs. However, I didn't realise the laptop had a severe case of poor cooling. When I play Rblox and other games, I can't even play above two graphic bars or get above 20 fps, and even then, I thermal throttle in like 10 minutes and reach temps of 80–90 degrees. The turbo mode does not help, as I reach Prochot in less than 5 minutes with temperatures just as high, and the stupid laptop boots up to turbo every time. The only bypass I found was to artificially cool the laptop. When I did that during turbo, I would be at about 70–80 degrees under load, and without turbo, I'd have 60–80 degrees max under load, being able to play for an hour or slightly more. As I understand it, undervolting would help me be able to fight this problem.

I tried to undervolt using Throttlestop, but it wouldn't let me access voltage control. Apparently, U-series CPUs are blocked from accessing voltage control from the BIOS. And I don't know how to unlock it in the BIOS; I'm too scared to even open the BIOS without a clear guideline. Some people also say Dell usually hides the option to enable voltage control and other things used for overclocking and undervolting due to stability issues and other stuff.

Is there any way I can safely undervolt my laptop? (specifically with throttlestop because I don't want to have another app like it.)

 

[Roland Of Gilead]

So a year ago, I bought a Dell Latitude 7390. It has an i7 8650u, 16 gigs of RAM, and a 256 GB SSD. I bought the laptop because of it's specs. However, I didn't realise the laptop had a severe case of poor cooling. When I play Rblox and other games, I can't even play above two graphic bars or get above 20 fps, and even then, I thermal throttle in like 10 minutes and reach temps of 80–90 degrees. The turbo mode does not help, as I reach Prochot in less than 5 minutes with temperatures just as high, and the stupid laptop boots up to turbo every time. The only bypass I found was to artificially cool the laptop. When I did that during turbo, I would be at about 70–80 degrees under load, and without turbo, I'd have 60–80 degrees max under load, being able to play for an hour or slightly more. As I understand it, undervolting would help me be able to fight this problem.

I tried to undervolt using Throttlestop, but it wouldn't let me access voltage control. Apparently, U-series CPUs are blocked from accessing voltage control from the BIOS. And I don't know how to unlock it in the BIOS; I'm too scared to even open the BIOS without a clear guideline. Some people also say Dell usually hides the option to enable voltage control and other things used for overclocking and undervolting due to stability issues and other stuff.

Is there any way I can safely undervolt my laptop? (specifically with throttlestop because I don't want to have another app like it.)

Hey there,

Some Dell stuff is bios locked, and so TS doesn't work with it.

@uWebb429 might advise further.

Don't be worrying too much about learning about this stuff. You gotta start somewhere Here's a good place to do it.

 

[uWebb429]

@Sekaiichi no baka

Dell locks out CPU voltage control in many of their laptops. The only way to unlock it is complicated and this method is definitely not recommended for beginners. Here is an example.

https://brendangreenley.com/undervo...hermals-battery-life-and-speed/#cpu-undervolt

Once unlocked, you can undervolt 8th Gen U series processors just fine. Intel did not lock these processors. It is Dell's BIOS that locks out CPU voltage control.

 

[Sekaiichi no baka]

@Sekaiichi no baka

Dell locks out CPU voltage control in many of their laptops. The only way to unlock it is complicated and this method is definitely not recommended for beginners. Here is an example.

https://brendangreenley.com/undervo...hermals-battery-life-and-speed/#cpu-undervolt

Once unlocked, you can undervolt 8th Gen U series processors just fine. Intel did not lock these processors. It is Dell's BIOS that locks out CPU voltage control.

Do you know if there's a way i can get safely walked through this, like with a video or something.

Or is there an easier way to do this?

 

[uWebb429]

is there an easier way

No. That is the only way.

It is dangerous if you do not know what you are doing.

I have never done this mod. Search Google or Yahoo. Maybe you can find a video for your laptop model.

 

[Sekaiichi no baka]

No. That is the only way.

It is dangerous if you do not know what you are doing.

I have never done this mod. Search Google or Yahoo. Maybe you can find a video for your laptop model.

When I searched Google, I found a link to an article in which they explained that I could downgrade and flash my BIOS to when Dell allowed undervolting on my CPU.

I also found this reddit post which was probably talking about the same thing. To be honest, I don't really understand it all.

And so, I wonder if this is doable because I checked my BIOS and made sure BIOS downgrading was enabled, but I don't know how to find out when Dell pushed the BIOS update that disabled voltage control or undervolting. My current BIOS version