How many megahashes this hardware computes?
They say 90 GFlops. ( https://bitcointalk.org/index.php?topic=26824.20;wap2 ) > For example a Radeon 6990 has 5.2 gigaFLOPS of computing power[1] and yields roughly 800 megahash/s in bitcoin mining. That was in July 2011. Mining is harder now.
http://en.wikipedia.org/wiki/Radeon_HD_6000_Series#Northern_...