Performance
Synthetic benchmarks go first.
3DMark 2006

There is no difference in the performance of the Radeon HD 4890 with the two driver versions. With the Radeon HD 4870 X2, the difference can be observed at 1280x1024 only.
3DMark Vantage

In the Performance profile of 3DMark Vantage the Radeon HD 4870 X2 is slower with Catalyst 9.8 than with Catalyst 9.7. The difference is smaller in the Extreme profile. The Radeon HD 4890 is indifferent to the change of the driver version.
World in Conflict

Here, the new driver is no slower than the previous version 9.7. Moreover, the dual-processor Radeon HD 4870 X2 even has a performance boost at 1920x1200, including its bottom speed.



