5 x ATI Sapphires HD5830 running at 975/350 each.
Fans set at 80%
Getting 1400 MH/s currently but have some tweaking to do.
Will be installing dummy plugs this afternoon which should increase output.

If i get my cables from Cablesaurus today (almost 10 days from the US to Aus),
I can install a further 3 cards to increase rate to hopefully 2300 MH/s