Disable Crossfire on 4870X2

[foog666]

I have a 4870X2 and I want to fold on both GPUs. I can't seem to disable crossfire on it. I disabled Catalyst AI and when I try to extend the desktop its tell me crossfire is still enabled and that I need to disable it. Am I missing something??? I even rebooted and I'm still getting the crossfire is still enabled. I have CCC driver 8.10 installed.

[Col-P-Todd]

If i,m not misstaking The ATI X2 gpu's do not use crossfire, they work together as one gpu only when you have 2 X2's will crossfire be enabled.

[DMB2000uk]

Are you running vista or xp?

It's only possible with xp, and I read you need at least version 1.2.1 of the CAL.dll files.

I can't find any definitive guides to disabling crossfire on the x2's, so maybe you don't have to and the -gpu1 -gpu2 (those are wrong, but you get what i mean) flags are all that is needed to get it working?

Dan

[foog666]

I'm running XP. I've setup my shortcuts on my desktop and edited the Target and Start in in the shortcuts. I can only get one gpu to start. When I start GPU2 it tells me is not supported or I need to update the drivers.

[DMB2000uk]

You might have to have a second screen plugged into the second DVI output and the desktop enabled on that one too.

Dan

[foog666]

When I do that , it tell me I need to disable crossfire

[foog666]

Guys I've managed to get both GPUs to fold now.. I was reading in the folding@home forum, that a few people were getting between 7500 to 8000 ppd with a 4870X2. I'm waiting for my ppd to update to see the results.

[DMB2000uk]

What did you have to do to get it to work?

Dan

[foog666]

I added the flag command -forcegpu ati_r700 to the target path. Before I only had -gpu 1. I also updated to the newest core.