Hello, everybody,

I have a rather strange problem here, I have 5 5850 cards all working in deepbit.net pool.
The pool reported hashrate changes over time. it varies from about 1000 MH/s to 1600 MH/s.
I use cgminer. cgminer reports about 320 MH/s for each card. this should be 1600 MH/s ALWAYS.

Can anybody give me a hint to what is/might be the problem.

Thanks all in advance.