Quote from: deepskydiver on April 09, 2013, 06:21:14 AM

What's the dual bios though and how do I invoke it - is that the difference?

The card should have a tiny switch on it which gives you two options --- default or overclocked bios.

Not sure on the specifics, but it goes like this:

Core Clock: 950 / 1000MHz if set to overclocked bios
Effective Memory Clock: 1425MHz(5.7Gbps) / 1450MHz(5.8Gbps) if set to overclocked bios

The switch is tiny, but once I found it, I get steady 590 Mhash/s on the overclocked bios bank using GUIMiner (I believe overclocked is bank #2)