BTW I just looked, at the time i bought these, the prices were the following. A bunch of 40gb hdds for 4 euro a piece. 2gb ddr3 memory sticks 7 euro a piece. Motherboards at 37 euro. Cpus at 29. And the PSUs were mixed. 850w XFX were bought with the idea of adding the third card at some time, those were 70 euro, and for other rigs it was Thermaltake 550w, i dont remember the price, but was cheap at like 45 euro. At these prices, it was not worth experimenting since the cards were 360 euro a piece, so the mobo+mem+cpu+hdd+psu was like 15% of the price of each rig, and at that rate it wasnt worth the fuss of making a custom solution.