Which one is the best computer for gaming?

No one single best gaming computer exists. The best gaming computer will depend on what games you wish to play on the computer. If you are looking for the best gaming computer that you can load any game and play without a hitch, you are looking for a specialized computer built just for gaming. You can buy a machine from a best gaming computer like Velocity Micro or from Digital Storm to name a few. The other option is to build the best gaming computer yourself.

But if you're hardcore, you could spend your life savings on a double ATI 5970, together with a PSU that can produce atleast a few kilo watts. Then you should find a motherboard that allows you to insert 128 GB of RAM (which is the maximum amount of ram that Windows 64 bit will allow you). Then I believe you should take on of the Intel's i7 extreme series. Then buy as many hard drives 2TB as your motherboard and PSU allow you to.

I know that a single ATI 5970 is like 600 euros, so a double will make it 1200 euros. A psu capable of producing kilowatts should be atleast 300 euros, a motherboard (if they excist) that support 128GB of RAM will surely be a couple thousand euros. The CPU will also be over the thousand euros and last you got the RAM. I have no idea how 128GB will cost. I know my 4GB ram was 100 euros. I know some people got 8 GB for 300 euros, as if the prices are exponential, but just take from me that your ram will probably cost more than your car.