AMD Radeon HD 7970 GHz Edition Video Card Review



Product: AMD Radeon HD 7970 GHz Edition
Company: AMD
Author: James Prior
Editor: Charles Oliver
Date: June 21st, 2012

3DMark 11

Futuremark's 3DMark 11 Performance and Extreme modes allow us to see the effect of the clock differences between our test specifications. Performance mode is somewhat CPU limited, whereas Extreme mode is very much GPU limited.

  XT v XT2 XT v XT2 OC XT2 v OC
Performance +7.8% +13.5% +5%
Extreme +8.7% +15% +5.7%

Adding the second card allows us to get a glimpse of how CrossFireX might scale:

  XT v CFX XT2 v CFX XT2 OC v CFX
Performance +60% +48% +41%
Extreme +91% +76% +66%

So, these results should give us some expectations for what we're going to see in testing - if the graphics settings aren't high enough, we're not going to see good scaling from adding a second GPU. In a perfect world we'd see a 100% increase but due to the inherent nature of alternate frame rendering overheads (the multi GPU render distribution method), a gold medal result would be in the 90%+ range.