I think you may well have the wrong Area 51 ALX. The R2 (AKA Triad) is around 35kg. I am referring to the Area 51 ALX (2009) which has a shipping weight of over a hundred pounds, and an average weight of 84lbs with a regular ATX board and one GPU in.
http://www.notebookreview.com/desktopre ... lx-review/So that translates to 38kg. Then add in all of the water cooling (there's 1.5kg in rads, a large steel support structure I added and etc) and yeah, I reckon it's up near 60.
I'll tell you how I knew that, too. When I bought it I built it at the house I shared with my ex wife in Dorset, and I threw it on her 50kg postal scales and got ERR. It was too heavy.
The Platimax PSU I put in there weighs at least half more than the crappy one I took out, too. Not forgetting the screen and god knows what else I managed to stuff in there while I was at it (vertical GPU riser etc).
I seriously wish I was joking, because this thing is damn near impossible to lift. The newer Area 51? has at least 1/3 of the size lopped off of each end at 60' and is not like an old Dell. It's like a tank.