The XBOX is by far the best console!!!!
The Game cube is better than the ps2 but no where no as good as the Xbox.
Unfortanatley the ps2 is far behind these 2 consoles but defenitley has the best game selection as it can also play ps1 games.
The XBOX runs with an intel 700 mhz processor and has a modified Geforce 3 in it.
The gamecube has around a 450 mhz processor in it and uses some kind of ATI video card.
Where as the ps2 only runs at 200 mhz with a video that is slighty better in some ways than the gamecubes video card.
Its a pitty that Xbox used an intel processor rather than a AMD processor which would give better gaming performance.
I don't know where ur friend got the idea of a geforce 5 in the xbox when Nvidia have stopped using numbers for there video cards. They are currently releasing there new video card called the Geforce FX. And the next xbox might have an ATI video card in it rather than an nvidia video card because of some dispute between xbox and nvidia (nothing serious).
The ps3 will have a 4ghz (4000mhz) processor in it. Which will make it very exspensive when it is released in 2005.
The only reason that these consoles seem faster and are faster than a pc , is because they have technology in them that makes everything alot faster sort of like what is in the AMD athlon xp processors which makes them give more performance than the actual speed of the processor.