The last couple of days I've been tweaking trying to get the highest Mh/s I can on my 6990 and after trying a number of different overclock settings, extra flags, every kernel tweak I could find and even several different miners and pools I still don't get anywhere near the 432-455Mh/s at 910Mhz that this guy is showing he's able to achieve here:http://forum.bitcoin.org/index.php?topic=25798.0
So I'm just wondering what it is I'm missing that he found in order to get that additional ~27-50Mh/s at only 910Mhz core speed. Is anyone else here able to replicate his Mh/s or anywhere close to it?
I'm using the exact same settings as him and this is what I'm getting at 910Mhz core clock per GPU:
Windows 7 X64
Aero Theme Disabled
GUIminer: Miner(Phoenix with 3% patch to phat kernal), Flags(-k phatk VECTORS BFI_INT AGGRESSION=7 WORKSIZE=128)
60% Fan speed on cards
405 MH/s per GPU