What are the chips around the GPU - Acer Nitro 5 an515-54?

Question

laptops

Everyone is healthy! The question is certainly not so hot, but it's very interesting.

I am the owner of Acer Nitro 5, when disassembling I saw that around the GPU chip there are 6 more around it, on which there are thermal pads, thermal paste.

Actually, this is the question, what kind of chips are these?
And another question right away, I can’t understand on the chips themselves, the consistency is too thick for thermal paste, and too liquid for thermal pads. In general, all this porridge is on thermotubes, and not on chips, I want to replace it, but first you need to understand what it is, unfortunately there is no photo ...

Approximately very similar mother

spoiler

Answer 1

This is video memory, most likely samsung, photo of the Acer Aspire V Nitro board: