-w 128 gives me better results with my 5850.
Interesting. When I change to 128 my rate drops by a full 10 MH/s per 5850. Perhaps there are other settings which need to be changed in tandem to yield an improved rate.
Could you let me know your other settings? RAM speed, SDK version, Catalyst version, kernel type/version/patches, kernel parameters.
If your comments can improve my rate I'll tip in BTC.
For me, it's the opposite. I lose 10 MH/s if I set -w 256.
I'm actually using Phoenix, so my settings look a bit different:
start /DC:\Bitcoin\phoenix phoenix.exe -u http://******:******@eu.triplemining.com:8344 -k poclbm VECTORS BFI_INT AGGRESSION=11 DEVICE=0 WORKSIZE=128