I know this will annoy some people. But to finally put to bed the rumour that MiMiMiner is running some sparkly fandangled ASIC miner....   read his post in this thread here:

https://bitcointalk.org/index.php?topic=355268.msg4371557#msg4371557

Where he says:
Hi,

Can somebody please PM me that has contacts with these people. We are very interested. Currently we have a pilot running with 80 GPU servers. We want to expand bigtime.

Thanks.


Now how one goes about getting over 900 MH/s from just 80 servers is another question - that's > 11MH/s per server.

Judging from here: https://litecoin.info/Mining_hardware_comparison#AMD_.28ATI.29 the best achieved is around 1.5MH/s per watercooled 7990, so with 80 servers would require 7 or 8 cards per server.

There are motherboards available with 7 PCI-E slots (e.g. http://www.newegg.com/Product/Product.aspx?Item=N82E16813131971) - probably more if I bothered to look harder

Quite a feat of juggling enough power supplies, dissipating heat and keeping 7 or 8 cards per board running in a stable manner.