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Intel Core Ultra 7 Issues?

DHR

DHR

DHR

Soldato
Joined
30 Apr 2003
Posts
3,567
Please feel free to move if better in laptop section.

It's a great CPU when it works! Ultra 7 155H.

Base clock is 1.4Ghz and it can boost to 4Ghz+ however I'm having issues where after a period of uptime the processor refuses to boost and sticks at below 1Ghz, even being reported in Windows 11 as well under 1Ghz at times. Until it's restarted it stays like that.

Hammering the device with prime, cinebench etc. when it's like this won't even cause enough heat for the fans to kick in, there's no heat, the CPU is just doing what it can with what little its got, thermals all come back cool as.

Reboot it, rerun the same benchmark, the CPU boosts to 4Ghz no problem, fans whirring as expected and heat generated, it's scores 80% more than what it did moments before. Cinebench for instance failed to get through one pass, after the restart it completes 2 or more.

Genuinely scratching my head on this one!
 
Hmm not thought of stopping it throttling below the base clock in the first instance. I don't think it's unfair to want it to work as designed though, if it throttles down to below the base clock, cool, as long as it can get back up too which just doesn't seem to be the case.
 
Have you checked what power plan has ben set in Windows? May give you some ideas why its not boosting back up or stuck at the speed it is
 
Last edited:
ED209 said:
Have you checked what power plan has ben set in Windows? May give you some ideas why its not boosting back up or stuck at the speed it is
Click to expand...

Sure have, tried both the manufacturers recommendations then windows basics as well, same thing. Can have everything across high performance on battery and mains and again if it's in that state, it'll stay there until reboot.
 
Does the pre installed Windows 11 have a load of HP bloat installed?

Could be worth doing a clean install using the Windows 11 ISO\creation tool and see if that makes any difference or if you can easily swap out the drive and have a spare 1 doing a clean install on that to test
 
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Liking the drive swap out idea there @ED209

Tried both the clean install route and manufacturers image too.

This has been going on for the best part of 9 months so I'm literally out of ideas hence the community asks now! It's mental!
 
Is this a wake from sleep issue? Or does perf just drop off a cliff after X amount of time while it's running?
You could try the High perf power plan, or just customise whatever power plan you prefer to keep the cores awake.
 
It's definitely linked to wake, sleep, transport conditions yes @Legion, it has on occasion appeared to happen outside of this but predominantly around transporting a laptop from one location to another, between Friday and Monday morning specifically.
 
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