Amazing Temps After Repasting ( 3 Months Old ) But Lower CineBench PTS?

Hey there notebook en·thu·si·asts
I have been lurking around the forum to optimize my laptop,cpu undervolting , overclocked the gpu, everything I could do to optimize before repasting.
I repasted the HP Omen 15 (2020) i7-10750h with Thermaltake TFX that I got 3 months ago, the result is AMAZING!!
CPU constantly hitting thermal throttle limit stock, >99C package temps, drawing a constant of 75w (HP power limit because of the thermal), all cores were fluctuating at around 4.1~4.15
Before the repaste, I achieved ~8200pts in cinebench R23 mutilcore benchmark.
After the repaste, temps maxed out at 82C, pulling a constant of 83w, clock maintaining 4.2GHZ all core, but only got ~7900-8000pts.
I can't seem to figure out why is that, I did not change the setup, same power plan, same throttlestop profile(undervolt), MAX fan, everything remains the same.
No antivirus, no windows update, nothing major running in the background..
I am not smart enough to explain this behaviour
Shoutout @Falkentyne for the awesome thermal compound recommendation

Here are some pics:
https://imgur.com/gallery/TKYZbDS
8125pts is the best that I could get after the repaste, mutiple benchmarks most of them are ~7900-8000pts.

 

Pretty happy with TFX too. Have it on a Blade Pro.

It is a b*tch to spread tho!

 

I don't think there's much to worry about.
Have you tried removing the undervolt (or slightly increasing the voltage to the CPU) to see whether that helps?
Also, do NOT have web browsers open in the bg... that will easily bring down your score (just shut down all software - apart from that which boots with the laptop - and run Cinebench again).

Did you try testing out the overall performance of the CPU in workloads like 3dsMax or gaming to see if there's been a downgrade or improvement?
Honestly, with such a massive improvement in stable clocks and temperatures, I'd be happy with the results.

Also, according to the following, your scores seem fine:
https://www.notebookcheck.net/Intel-Core-i7-10750H-Processor-Benchmarks-and-Specs.452735.0.html

8125 pts is definitely acceptable and in the upper maximum range.
Maximum scores for that CPU would be 8585pts... but, that's also probably under IDEAL conditions (aka, amazing cooling, etc. - and we know most laptop OEM's don't design/optimize cooling for individual hw).
Thermal paste is great, but it can't compensate for HP imposed thermal limits.

I don't think there's any cause for worry. But as I said, try increasing the voltage to the CPU in throttlestop by a bit or removing it entirely and then test to see what you get score-wise... but losing ~100pts in Cinebench is nothing to worry about... I'd actually argue its within a margin of error.

 

Appreciate the informative reply, I found out the solution, and successfully beat the maximum scores first try
I went to FIVR, attempting to remove the undervolt as you recommended, and I saw something new - Thermal Velocity Boost, I forgot about the ThrottleStop that I just updated to 9.3 right before benchmarking with the new Thermal Paste.
Running TS Bench, seeing TVB was limiting my performance, this must've been accidentally activated TVB on the CPU because of the new update, since this did not happen before. disabling TVB in FIVR brought my all cores to boost to 4.3 for the first time, drawing a constant of 89.2W (Almost hitting that 90w power limit set by HP ) and maxed out at 86C

To summary the result: +0.2GHZ all cores, CPU drawing extra 15W under maximum load but 15C lower (could've been bigger of an improvement if CPU was drawing 90W before the repaste), and beat the maximum scores
Here is a screenshot: https://imgur.com/a/3FoufLz

 

Excellent work.
Glad that my suggestion provided 'some' help.
Enjoy your 'new' laptop.
;-)