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Guild Wars 2

This one is a little different. According to Fraps, the frame-time distributions for all tested configs are pretty spiky. By FCAT's account, the single-GPU solutions are nice and tight, with relatively little variance overall; however, both of the multi-GPU offerings are at least as spiky as in the Fraps data. The Radeon HD 7970 CrossFire config's Fraps and FCAT plots match up very closely, while the GTX 680 SLI's FCAT results show even more variance than the Fraps output.

Frankly, we need to spend a little more time looking into this one. Doing so should help us understand the impact of the divergence between the Fraps and FCAT results for the single-GPU cards. This game is especially tricky because it's an MMO with a client-server relationship—and, remember, we have only a single test run for each card in this case. Subjectively, the animation didn't seem entirely smooth to us on any of the cards, but I'd like to spend more time with the captured video before drawing any conclusions. For now, let's move on and take a closer look at some of the multi-GPU issues we've encountered.