this post was submitted on 21 Feb 2024
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They've gotten a bit better within the Nvidia 1000-3000 series, but I can't vouch for the 4000 series. Better thermal management techniques and lower target thresholds.
That being said, I'm sure there are manufacturers that buck the trend and set higher thermal targets for more performance. I'd say monitor your temps, and target for no higher than 75c if possible.
75c is impossible on a gaming laptop if you dont have a low power gpu (eg max q)
As in too high or too low? Maybe it might be that I've only had experience with a mobile 1060, 3060, and 3070 from Lenovo, but all of them seemed to have a target temp around 72-75, that or that was effectively where the fans could keep it at equilibrium when running furmark as a benchmark.
It really depends on the tdp. On my laptop which has a 2070 with up to 115 w and an 10th gen i7 with up to 45 w the cpu can go up to 95 deg and the gpu throttles at 86 deg.
Some laptops have Max q or low pwer versions of the same card which have a lower tdp and produce less heat. But for higher power gpus and CPUs they will most certainly go above 80.