@Christian_Masek Not sure what you mean by ‘see some differences’, but
If you mean differences in the archived hash rate you can start modifyinng the intensity parameter, either in ccminer’s config file or by using the -I command line parameter.
Typically lowering the intensity reduces the archived hash rate and the power consumption of the GPU.
Inreasing the intensity increases the hashrate, but if it is set too high, you will notice errors in the ccmimer logs, and the hash rate way drop.
When you have found the optimal setting for the intensity, you can do another -slightly dangerous- thing, which is to overclock your GPU and GPU memory, if your card/driver software does allow that.
If you go for that it is at your own risk, as your GPU may overheat or even be destroyed.
You should increase the clock rates with very small steps.
In order to reduce the risk of overheating you could try to lower the GPU voltage a bit, but possibility again is dependent on your GPU driver software.