Optimal configuration for low hashrates?

[zheoffec]

Hi,
I am not that new to bicoin but new to the forums, anyway, I have a 6570 - quite low end - and I get around ~85MH/s, sometimes 90.
I mine at bitparking and MT Red, and these are the settings I use:

# cgminer --gpu-threads 2 --shaders 480 -g 4 --lookup-gap 2 --intensity 6 --worksize 64 -c x.conf

My GPU has 1GiB of memory and is clocked at 675MHz (maximum) and 667MHz (minimum), for core and memory, respectively. Here is the output of `amdconfig --odgc`:

Default Adapter - AMD Radeon HD 6570
                            Core (MHz)    Memory (MHz)
           Current Clocks :    100           150
             Current Peak :    675           667
  Configurable Peak Range : [400-675]     [667-1000]
                 GPU load :    0%

As you can see, the most I'm allowed to clock the core is 675, and the least I'm allowed to underclock the memory is 667.

I know it's not profitable.

But what options will get the most out of my gpu? What payout methods are best for infrequent miners? etc.

Thanks