Total War: Shogun 2
The two Radeon HD 7970s enjoy an even bigger advantage in Total War: Shogun 2, even though the SLI technology is highly efficient here.
There are no surprises in Crysis 2 except that CrossFireX is incompatible with antialiasing. We wrote about this problem in our earlier review.
The multi-GPU solutions are all close to each other in DiRT 3, SLI being comparable to CrossFireX in efficiency.
Hard Reset Demo
We don’t see anything unexpected in Hard Reset and Batman: Arkham City:
Batman: Arkham City
The SLI technology is highly efficient at 1920x1080 in Battlefield 3 but no more than 50% efficient at 2560x1600. Why? The dual-chip GeForce GTX 690 is far from brilliant, too. So, we can suspect that the performance of the GeForce GTX 680 SLI is limited by the amount of memory on board each card, which is 2 gigabytes. Or there may be some driver error that prevents the dual-GPU solutions from showing their best. Well, CrossFireX doesn’t work normally at all on the Radeon HD 7970s in this game, so Nvidia’s technology isn’t so bad after all.
Here is a table with full test results: