CPU Power throttling | Legion Series | Page 1

lean tulip Dec 21, 2025, 9:21 AM

#

Lenovo Legion 9i Gen 10 5090/I9 275HX CPU power throttling

Just received my new laptop, stated above, and when I run cinebench it is clear from HW info that it is being power throttled. My Cinebench score usually ends up north of 1600 (2024 version). It barely reaches thermal throttling as the temps are not going above 95/100.

I have updated my Windows and Nvidia drivers and not sure if I might be missing some software. I have seen on reddit people mention disabling RC6 in the bios but this is a little above my paygrade.

Can provide screenshots as necessary but not sure what people want - not a tech wizard so bear with me!

warm dagger Dec 21, 2025, 9:34 AM

#

lean tulip Lenovo Legion 9i Gen 10 5090/I9 275HX CPU power throttling Just received my new...

RC6 is only for lowering power consumption, I dont get how it plays into this as its not related

#

make sure your machine is updated for both BIOS and Management Engine

#

and start tweaking with Throttlestop

#

#1398966737038217316 message

lean tulip Dec 21, 2025, 9:37 AM

#

where would you locate the BIOS/management engine updates?

warm dagger Dec 21, 2025, 9:39 AM

#

lean tulip where would you locate the BIOS/management engine updates?

Lenovo PC Support, enter serial, manual drivers, BIOS category

#

ME only if applicable (Lenovo posted), else just BIOS

lean tulip Dec 21, 2025, 9:40 AM

#

OK will check BIOS now. Thanks.

#

No BIOS updates required (up to date) - says Lenovo

warm dagger Dec 21, 2025, 9:44 AM

#

you know which BIOS version you are on?

#

please dont tell me you used automatic checker

lean tulip Dec 21, 2025, 9:45 AM

#

"not a tech wizard so bear with me!"

#

You suggest using the manual checker?

warm dagger Dec 21, 2025, 9:45 AM

#

you dont need to be a tech wizard to read

warm dagger Dec 21, 2025, 9:45 AM

#

warm dagger Lenovo PC Support, enter serial, manual drivers, BIOS category

.

lean tulip Dec 21, 2025, 9:46 AM

#

Okay I am in the manual drivers section now, one second.

#

Its not entirely clear which one I have installed but it suggests the version "RZCN40WW"

warm dagger Dec 21, 2025, 9:47 AM

#

you can check in Vantage, LLT, msinfo, dxdiag

#

hwinfo also shows this option

#

like, many many options

lean tulip Dec 21, 2025, 9:48 AM

#

"RZCN32WW" in vantage

#

bios version

warm dagger Dec 21, 2025, 9:48 AM

#

update

#

and as you can see

#

reading is important

#

automatic checker doesnt work for shit

lean tulip Dec 21, 2025, 9:48 AM

#

shall do friendo, and im on PTO, i purposefully stopped reading or thinking approximately two days ago

#

:D

#

Okay updated. Should I run cinebench again

warm dagger Dec 21, 2025, 10:06 AM

#

performance mode, single run

lean tulip Dec 21, 2025, 10:15 AM

#

Okay I scored a little higher. So I did a single run of multicore and ended up closer to 1700 than 1600 (900 pts gain)

#

I see some results online saying they're getting closer to 2k for the same CPU

#

Unsure if indicates a problem or not

warm dagger Dec 21, 2025, 10:20 AM

#

now do Throttlestop beta and just add negative offset of -40 to the Core

lean tulip Dec 21, 2025, 10:20 AM

#

Hmmm and the warranty? Sounds void-like

warm dagger Dec 21, 2025, 10:23 AM

#

huh?

#

they literally let you play with CPU Undervolt option (set it to Enabled/Disabled)

#

what warranty if its in user space

lean tulip Dec 21, 2025, 10:25 AM

#

It does mention in LegionSpace that the custom settings may void warranty incase of damages etc.

#CPU Power throttling