Alienware_Melting
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- Feb 18, 2024
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Hi everyone, how you doing?
TL;DR: are wide differences in temperature between different Cores (up to 20° Celsius) indicative of bad application of PTM 7950?
Now, some context, I started this thread here months ago to learn how to unlock and undervolt my laptop in the title.
I managed to achieve what seemed to be stable -144 touching only CPu and cache, not the other stuff.
Months later I decide to get tools and open the inverted MB to repaste the CPU and GPU. I dind't change any thermal pad and I applied PTM7950 as instructed by the maker: apply it to the heatsink. I dind't make a blob, I dind't use just a little bit, I covered the entire area which is including also plenty of leftovers. I've one need many heat cycles to get the better out of PTM7950. I already did that, for aa week, plenty of Cinebench stress testing.
Now, the GPU I cannot complain, it stays cool enough never going much above 70C, but the CPU goes fast to close to 100, but half the cores are low 80s, almost the other half mid 80s, and 4 cores always around 10C above the second highest temps. Sometimes 79 vs 99 in total difference. I'm drawing close to 165 Watts but not quite, because the undervolt is now -160 (but I'm not sure it is stable); I believe the full wattage is never reached, it tops at ~157.8 Watts, but it triggers the POWER limit anyways (which is 165 Watts).
Anyways, I also notices that the FID for the lower temps goes 47x during Cinebench multicore, but stays are 37x for the higher temps, but even for those not in the 4 core group that heats like f*ck, it also stays 37x.
Anyway, not sure how @unclewebb made the core sorting algorithm.
Finally, yes my Cinebench score is better for the CPU, from 1705 with -75 undervolt and original paste to ~1950s. When I stop the test, temps fall almost instantly some 30C, so low 60s, but take a couple of minutes of top fan speed to go back to low 50s. GPU score in Cinebench is not that greatly affected by PTM7950 application alone.
So, here's the dilemma, to open this F$#@*% machine again will be such a PAIN since the wireless antennas are absolutely SoBs to connect both, in the 16 inches model, and close the entire thing with them not unplugging. This literally took me 90% of the entire service time, no joke.
Ok so here's some screenshots:
ps: Oh I've also changed IccMax from 230 to 240 amps but I'm not sure that does anything special and yeah now I noticed there are 2 wattage limits as in the last pic, MMIO is 157, MSR is the one 165. I don't know what those mean
TL;DR: are wide differences in temperature between different Cores (up to 20° Celsius) indicative of bad application of PTM 7950?
Now, some context, I started this thread here months ago to learn how to unlock and undervolt my laptop in the title.
I managed to achieve what seemed to be stable -144 touching only CPu and cache, not the other stuff.
Months later I decide to get tools and open the inverted MB to repaste the CPU and GPU. I dind't change any thermal pad and I applied PTM7950 as instructed by the maker: apply it to the heatsink. I dind't make a blob, I dind't use just a little bit, I covered the entire area which is including also plenty of leftovers. I've one need many heat cycles to get the better out of PTM7950. I already did that, for aa week, plenty of Cinebench stress testing.
Now, the GPU I cannot complain, it stays cool enough never going much above 70C, but the CPU goes fast to close to 100, but half the cores are low 80s, almost the other half mid 80s, and 4 cores always around 10C above the second highest temps. Sometimes 79 vs 99 in total difference. I'm drawing close to 165 Watts but not quite, because the undervolt is now -160 (but I'm not sure it is stable); I believe the full wattage is never reached, it tops at ~157.8 Watts, but it triggers the POWER limit anyways (which is 165 Watts).
Anyways, I also notices that the FID for the lower temps goes 47x during Cinebench multicore, but stays are 37x for the higher temps, but even for those not in the 4 core group that heats like f*ck, it also stays 37x.
Anyway, not sure how @unclewebb made the core sorting algorithm.
Finally, yes my Cinebench score is better for the CPU, from 1705 with -75 undervolt and original paste to ~1950s. When I stop the test, temps fall almost instantly some 30C, so low 60s, but take a couple of minutes of top fan speed to go back to low 50s. GPU score in Cinebench is not that greatly affected by PTM7950 application alone.
So, here's the dilemma, to open this F$#@*% machine again will be such a PAIN since the wireless antennas are absolutely SoBs to connect both, in the 16 inches model, and close the entire thing with them not unplugging. This literally took me 90% of the entire service time, no joke.
Ok so here's some screenshots:
ps: Oh I've also changed IccMax from 230 to 240 amps but I'm not sure that does anything special and yeah now I noticed there are 2 wattage limits as in the last pic, MMIO is 157, MSR is the one 165. I don't know what those mean
