1) Computers cannot operate without producing heat. There can be laptops with dual video cards. The size of the laptop would be large. Most laptop screens aren't that big. So, SLI or Crossfire wouldn't really benefit. Graphic cards aren't thick. It's the cooling unit that adds a lot of size. You can upgrade a laptop to 8GB. You can have as many external drives you want. Why would you want a laptop that weighs 25 pounds and is as big as a suitcase? It defeats the whole purpose of having a laptop.
2) Fans running at 130000 RPM would be too loud. It might damage your ears. Some jet engines operate at 130000 RPM.It would provide so much force, it would actually destroy your parts. If you want a temperature of -30C or more, you can get liquid nitrogen cooling.
