Recap
Here is an index of performances, which we calculated by giving all games the same weight and based on a score of 100 for the Radeon HD 2600 XT in high quality mode:
Overall, we can say that the Radeon HD 2600 XT GDDR3 is equivalent to the GeForce 8600 GT and the GDDR4 version is slightly above. However, this difference between the two 2600 cards is not enormous despite 50% more memory bandwidth thanks to the GDDR4 1.1 GHz.
As for the Radeon HD 2400 XT, it’s ahead of the GeForce 8500 GT.
Once antialiasing is activated, the Radeon HD collapses, especially in medium quality mode, which is much more sensitive to antialiasing performances. While the average reduction in performances with antialiasing is between 25 and 30% on all other cards, it is at 40-45% on these three Radeon HDs.
The Radeon HD 2400 XT thus finishes last and the Radeon HD 2600 XT doesn’t manage to keep up with the GeForce 8600 GT.
