PTM7950, phase change stuff.

It’s kind of a pain to use vs simple paste, but my god (a pain because it’s very thin between two sheets of plastic, like a screen protector). Dude on Etsy sells them in perfectly cut pieces for the deck, or find a legit place to buy a bigger sheet. Pop it in the fridge for an hour or so, have a pair of fine tweezers ready after cutting to size.

Full cpu/gpu core load on my deck it stays around or below 80 now. At most the CPU or GPU may climb to 81C if one is getting hit harder (like 9-10w+), but generally 70-78C and fan stays below 6000. Before, temps would sit in the low to mid 80s, with fan 6300 or higher.

Lenovo uses it on their Legions too. I can go full 40-50w+ CPU / 130-140w GPU and temps hit ~85/70 respectively (5800H / 3070 Legion 5 Pro).