HIS HD6990 Dual CrossfireX Review

To overclock today we are using AMD’s Catalyst Control Centre. The HD6990 is set to performance/’OC’ mode. It is also worth pointing out that overclocking these cards past 880mhz will require some serious case airflow and cooling. We used an open bed for our overclocking testing.

It seems our first sample from AMD is an unusual example of the HD6990, as neither of our HIS cards were artifact free past 920mhz. Memory limitations were similar to the reference card, peaking around 1425mhz.

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