Cpu is throttling on high performance and plugged in

[jonaharkiay]

I have an i7 3520m chip. It has a 2.9 base and a 3.6 boost. Initially, the cpu load running prime95 is 100% and speeds are at 3.4ghz. But sometimes it will just decide to drop down to 86% under load and the clocks go down to 2.4ghz. It always happens when I unplug it, but it also happens when I keep it plugged in (maybe when it stops charging, Idk). Intel turbo boost tool says it's in power save mode, sometimes even when it's plugged in. It could be a power issue, but I've checked the ram, updated the bios, etc. no other components have problems, and When running intel's diagnostic tool, it says processor is at base, so I believe this is a driver issue. I have the chipset driver, though! Sometimes, reinstalling the drivers fixes it only to fail again. Intel says something about drivers working if upgraded (presumably from a different OS?) I fresh installed all the drivers so there shouldn't be anything wrong, right? Especially since my device has been tested for compatibility from dell. When i turn speedstep (and turbo boost) off, clocks are at base. My power profile is at high.

 

[Kasper Jorgensen]

When you unplug it, it happens because Windows is changing power profile. When you keep it plugged in it probably happens due to thermal throttle. Laptops are very prone to thermal throttle so it seems quite normal.

 

[jonaharkiay]

I have found out that there was a certain driver I missed installing and it fixed it. Weird how it wasn't made by intel though.

 

[ArhamAsam]

I know this post is old, but I have the same problem and I would like to know which drivers you installed.

 

[jonaharkiay]

I know this post is old, but I have the same problem and I would like to know which drivers you installed.

The dell feature enhancement pack. I beleive it was a win 7 download but i had to do it on a windows 10 os? Long time ago i cant remember too well, but i think that's it. Also all the other drivers from the manufacturer page of course