HIS Radeon HD 7870 IceQ X Turbo Video Card Review



Product: HIS Radeon HD 7870 IceQ X Turbo
Company: HIS
Author: James Prior
Editor: Charles Oliver
Date: July 4th, 2012

3DMark11

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.

We can see that the IceQ X Turbo's 10% increase in clock speed gives a 7% increase in Performance score and the overclock setting shows a gain of 9.8% over IceQ X Turbo speeds, and 17.6% over the reference design. Under Extreme settings the HIS IceQ X Turbo shows an 8% increase, with the OC setting 11% faster again and a 20% gain over the reference setting.

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

Adding a second card at IceQ X Turbo settings gives a 59% increase in the Peformance settings result. Overclocking gains 13% more score, bringing the increase over a single IceQ Turbo X to 80%, and 92% faster than a single reference HD 7870. Using the Extreme setting, adding a second GPU is 79% faster than single GPU, and 112% faster when overclocking both GPU's. A pair of IceQ X Turbos is 93% faster than a reference HD 7870, and overclocked extend that increase to 130%.

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 ~90%.