Haha, these are as ridiculous as the EVGA GTX 275 + 250 combo

The Hydra one does sound cool, though... If you have a relevantly performing card, say GTS 250 or 9800GTX, you could buy one HD5770 and get more performance...

However, in that case the "why don't you get a second GTS 250" question arises, but we suppress it cruelly, because this is novelty tech and we likey.