Help oc with MSI GTX 580 TF III POWER EDITION

[Andrix85]

Hy boys,

 

I have this vga to try oc under Ln2 but I have some problems with oc.

The pcb is the same of Lightning version, but someone can tell me how bios and msi ab version can I use to modify voltages ?

 

And the switch on the pcb, how can I use ?

 

Thanks