It's the . . No, it's just been beaten by the . . . Oh no, a faster one has just come out!!
Computers are getting more powerful and faster almost every day. Also, because different processors and different graphics cards differ in how they deal with different processes, the most powerful for games may not be the most powerful for rendering graphics, which may not be the most powerful for managing databases.
ok so you want a fast PC - fairy nuff - but why does it need to need to be 'faster than any other' PC? There aren't any prizes for this (I don't think!), and as you'll have seen from Gandalf's thread, you'd need a room the size of two tennis courts even if you could afford it :-)