hey guys, any of you tried overclocking in crossfire mode using other tools beside catalyst?

Here's the problem im facing, both of my HD3870 has been pencil modded to 1.45v and both has been tested and is confirmed to be stable @ 950/1300. Then theres a problem, on ati CCC overdrive, max clock is only 880. So... i used rivatuner instead, and yes it works... but only on the main card, when overclocking the second card, it always reverts back to its stock speed.

Is there any ways to run both of the card at the same speed? does anyone knows any link to mod the bios? im thinking to set 950/1300 as bios stock speed so that both card will run and stay that speed without having to install too many apps.

not sure my coming 850w psu can take it.