Sapphire Radeon 4870x2 artifact problem

[keremetes]

Can someone tell me where i can (how&where) find a new BIOS version for my sapphire radeon 4870 x2 please? because with the new catalyst drivers when i use the overdrive option the games and all other 3d apps start to have (alot of) artifacts, as far as i figured out i need to update my bios for my card but please dont send me the wrong file because then the card would be unusuable. its a sapphire 4870 x2

 

[evongugg]

Not all cards overclock well. I don't think iti is a bios problem.

Bios video cards

http://www.techpowerup.com/vgabios/

http://www.mvktech.net/component/option,com_remository/Itemid,26/

also On the Edge of Technology

 

[coozie7]

I do not think it is a BIOS issue either, sounds more like high temperatures or too high an overclock.
Run the card at stock speeds and use GPUZ or Rivatuner to check the temperatures under load.