Owners of the HD4850 that have set up a CrossFireX system had a nasty surprise when upgrading to the new 8.12 Catalysts.  The lucky ones only saw a drop in performance, the unlucky ones became plagued with BSODs.  AMD has since released a hotfix for affected users, which Big Bruin has installed and tested.  The performance gain is not awe inspiring for those who could still use the card; the total lack of BSODs will certainly cheer up others however.

“ATI has recently released a hotfix to their Catalyst Driver version 8.12 intended to improve DirectX10 performance in multi-core CPU systems and to resolve BSOD issues using dual ATI Radeon HD 4850 in CrossFireX configurations. With a HD4850x2 in hand, I had to see if the 10 -25% performance increase in some applications was indeed possible.”

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