Trying to mine using non-similar gpus

[nuhash]

Just got a used 6850, trying to mine with it in conjunction with my 7850.

On bfgminer, with default settings i can only get around 300MH/s with both GPUs maxed out which is the same as the 7850 on its own.

Am I missing something?

[bones1]

Just got a used 6850, trying to mine with it in conjunction with my 7850.

On bfgminer, with default settings i can only get around 300MH/s with both GPUs maxed out which is the same as the 7850 on its own.

Am I missing something?

Forget about GPU mining. They are not cost effective anymore.

[bitbitcoins]

Forget it