According to our chart representing standard-quality graphics settings, Arma 3 benefits from fast memory, fast host processors, and fast graphics. The transition between those subsystems becomes fairly obvious as resolution increases, with the stock Q2 machine suffering bad memory bandwidth and the overclocked Q1 machine benefiting from the once-fastest single-GPU graphics cards in SLI.
The benefits of SLI really stand out when we enable the Ultra quality preset at 5760x1080, where both of the $1600 machines are barely playable. A look at my test notes shows that the difference between average and minimum frame rates is minimal in this title.
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