cgminer setup help for dual cards

[space_pope]

Hey guys, I'm new to bitcoin mining and was hoping to get some help. I have an AMD 7850 (900 core / 1200 memory) in a dedicated mining box running Windows 7. I'm using cgminer 3.1.1 with Catalyst Driver 13.4.

I made a bat file to run cgminer. These settings work just fine and I get 270MH/s
cgminer -o xxx -u xxx -p xxx -v 1 -k poclbm -I 6

My first question is what hash rate should I be expecting? Is this a good hash rate? If not, what parameters should I be using?


I also have an AMD 5750 (710 core / 1160 memory) that I would like to use in the same box, but the only parameters that I've found that don't instantly crash cgminer are these, which gives me another 142MH/s
cgminer -o xxx -u xxx -p xxx -v 1,2 -k poclbm,phatk -I 6,6

However, this doesn't seem to work correctly. GPU0 (the 7850) continues to run fine, but my 5750 just says this: GPU1: invalid nonce - HW error

I can't figure out if this is a problem with my video driver, or cgminer, or the parameters I'm using. So my second question is what parameters should I use when both cards are in my box?

Thanks for any help you guys can provide

[c0rrupt]

Going to solve similar problem anyone can help?

[space_pope]

Is anyone here running a similar setup?

[42davidsmith42]

Have you tried guiminer? There is a version for 256 and scrypt.  You might want to try that first. 

[space_pope]

I've tried guiminer, but it's slower and I don't want to use it. I also can't connect to slush's pool when I use guiminer.