Answer is yes... rooms full of hardware. Hot hardware.
Fact is you can get various kH/s from different boards, but in my situation I run at about 500kH/s with a single 7950 GPU for litecoins. All you have to do is multiply it out. Well, that and $$.
My current miner holds 6 x 7950s and produces about 3 Mh/s.
As of right now, as the ASICS are entering the market,
BTC are moving from the Mh/s to Gh/s. Odds are that unless you are in the Gh/s you are going to be banging your head against the wall with the block solve times for
BTC.
That being said, 500kH/s is not a bad place to be for litecoins. Keep cooking those processors!
Try out this
http://ltc.kattare.com/calc.php