GTX560 ti mdt x5, multi display out of one card?

No i meant why do multi monitor on a 560 and not a 570 or 580 considering they hold much more horsepower.
Shoddy work from sparkle IMO as it is a waste of money.
You will need at least 2 GTX 560Ti for this task but the damn memory is bottlenecking it already....
Price is also VERY high, for that price you could get 2 cards that could output a good amount of moniters.