Error Message “3DMark 11 has encountered an error - Unknown error occurred during benchmark run”

Article Number: GPU-39

3dmark11 will hang on “combined test” and display the bellow error message when running two HD6990 in Crossfire mode when using a 32bit operating system.

Our engineering team has determined that 3Dmark11 requires more memory than a 32bit Operating System can handle when running two HD6990 cards in CrossfireX mode.
It is recommended to run 3DMark 2011 in a 64-bit Operating system when running two HD6990 cards in CrossfireX mode

Applicable Products:
This article applies to the following configuration(s):


  • 3dmark11
  • AMD Radeon HD 6990 Series
Operating Systems​​
  • Windows® 7 32-bit Edition
  • Windows® XP 32-bit Edition