i notice something else what is strange
when i put memory to 1900 start the miner is hash around 750mh
when i increase the memory to 2000 (hash speed stay the same)
i close the miner start the miner again with 2000 i get 800mh (at 2000 it s unstable gpu crash after few minutes)
but i decrease the memory to 1900 it s till hashing at 800 (but same computer crash few minute later)
but why is that ? does the miner lock the memory speed ?
I got the same thing, changing memory speed while miner has already been run has no effect on the hashing speed.
I actually got it on ETH miner as well (only on 470 and only on one machine)... confusing.