thermal compound paste liquid

Hello tom'sHARDWARE forum! So... For the record. I am not a newbie in Tech, but I've running out of ideas. Trying to research more on the forum, but all the ideas are simply not working. So for the first my Setup: Processor: intel core i7-9700K RAM: Corsair Vengeance LPX DDR4 4GBx4 (3600Mhz...

So I'm planning on buying a new pc, but will liquid metal bother the i9-11900k, I heard it's rather corrosive and can bother metals like aluminum, would the 11900k be bothered?

Which one is better Thermal Grease for CPU? After how many years a CPU needs new thermal paste?

So, i need to buy a new thermal paste, for the first time. After reading a lot of reviews and getting recommendations i decided that artic mx-4 is the best for my laptop. But there are products with exact same name on amazon, with different prices and different tubes on the photos. Which one...

To begin with, my current setup is kinda very very old (something @ lga 775, I don't even remember full specs) and it's getting to 10 years old mark. I am currently saving a for full gaming setup based on lga 2011, but that's not the problem, I already looked up some parts and will eventually...