Far Cry 4
Note that because Far Cry 4 uses a fairly efficient game engine, we're testing at 4K here, as we did with Battlefield 4. Believe it or not, these Far Cry 4 benchmarks are higher than any other game in our test, including those we ran at 2560 x 1440. SLI makes this game a real treat at 4K, as we hit the coveted 120fps, at least when we use more than a single SLI bridge.
But wait, what's this? Are we seeing SLI scaling over 100%? Yes, we know that's a bit odd, but given that our single-card benchmarks were the second of four that we did in this game, we know it wasn't a surprise game patch, driver update, or even the Windows Anniversary Update, which actually did throw off our 3DMark testing. Perhaps even stranger is that two standard SLI bridges used in tandem seems to outperform the EVGA HB SLI Bridge. In the end, we don't really have insights into all of this, except to say that there may have been a particular graphics effect in the Nvidia GameWorks suite that was too bottlenecking the single card, but is overcome with two cards working together.
The Witcher 3
We're dropping back down to a resolution of 2560 x 1440 for The Witcher 3, as it's far too demanding to run at 4K and still hit ultra-high framerates that will really challenge the SLI bridges. Unfortunately, this is in part due to the somewhat disappointing SLI scaling in this game, which starts at 52% with a single bridge and jumps to only 63% with EVGA's HB SLI Bridge. The good news for gamers buying that bridge is that this translates to an impressive return on investment: a 7% boost. But then again, running two cheap SLI bridges in tandem provides nearly the same effect.
Rise of the Tomb Raider
Rise of the Tomb Raider is the newest game in our test suite, and if it's any indication of what's in store for the future of SLI, the picture is not so rosy. We only achieved scaling of 39% with a single SLI bridge and 41% with the two dual-link options. Luckily, at a resolution of 2560 x 1440, that's still enough to keep it comfortably above 100fps in our benchmarks, and thus well into the sweet spot of high-end G-Sync monitors, including our recommended pick, the Acer Predator XB271HU.