Is it worth updating Catalyst from 11.5 to 11.8?
#1
Question 
Is it worth updating Catalyst from v.11.5 to v.11.8 and to the latest SDK also?

Will it give any increase in performance?

Current speed in v11.5 is 7300M with 2*5990.
#2
on windows, speed does not change. you can upgrade but dont expect any change.
on linux, 11.8 creates 100% CPU load per GPU per core and this reduces performance a lot.
#3
for more details, see here: http://hashcat.net/wiki/doku.php?id=oclh..._forceware