Here is our PC setup for this test:
The HD4770 isn't officially supported by the the v9.40 graphics drivers, so we had to use the driver that came with the retail package rated April 2009. Probably it is a tweaker version to support the HD4770. The upcoming v9.50 set of Catalyst drivers is expected to offer even better performance performance as well as support for the Windows 7 RC OS.
Below you can see the applications and games we used for the performance measurements for this card. The FRAPS software was also used to check the in game performance when needed.