You don't need a monster machine. I have an I7 processor at 2.9 GB, 8 GB's of memory. An ATI 5770 Video Card. Good, but in no way, monstrous. It looks like that. And I concur with the , what is this going to look like in a year, question. It's only alpha, for God's sake! And it's not just pretty, it runs beautifully
"From our orbital vantage point, we observe an earth without borders, full of peace, beauty and magnificence, and we pray that humanity as a whole can imagine a borderless world as we see it, and strive to live as one in peace."
Astronaut William C. McCool RIP, January 29, 2003 - Space Shuttle Columbia