a better question is why 4 GB of RAM? they dont give any hint to OS or if they even put one on for you. apparently they just wanted to be able to say they put in the best of everything. the 8800, 4 GB of RAM, Quad Core Intel, dual gigabit, 802.11n. This is $10K worth of bragging rights....of course...subtract the fact you had to buy it and couldnt put it together yourself. It seems very "Heckendorn".