Sniper Elite V2 Benchmark
The CrossFireX tandem fails in this game:
The bottom frame rate of the CrossFireX configuration is too low, although it’s important for smooth gameplay. Judging by the performance of the single Radeon HD 7790 and the higher results of the 2GB version, the problem is caused by the lack of graphics memory. We've noted this fact with top-end products, so entry-level cards are going to suffer from it even more. At the same time, the average frame rate is quite high on the CrossFireX tandem – almost 100% higher in comparison with the single card. But again, the low bottom speed spoils all the fun.
The CrossFireX tandem looks much better here, even beating the GeForce GTX 760. The 1GB and 2GB Radeon HD 7790s deliver the same performance.
The 1GB Radeon HD 7790 has problems with bottom speed in this game, both as a single card and as a CrossFireX tandem.
1 GB of graphics memory seems to be a limiting factor in Crysis 3, even though not as much as in Sniper Elite V2 or Hitman: Absolution.
At the same time, the Radeon HD 7790 CrossFireX tandem is quite competitive against the new GeForce GTX 760 in terms of average frame rate.
Tomb Raider (2013)
The CrossFireX technology is highly efficient in Tomb Raider, so the two 1GB Radeon HD 7790s are twice as fast as the single such card. There are no problems with the bottom speed here.