NVIDIA GeForce RTX 2080 Ti NVLink SLI Scaling Explored
GeForce RTX 2080Ti NVLink SLI - Rainbow Six: Siege and F1 2018
Rainbow Six holds a special place in the hearts of many PC gamers, as it's one of only a handful of titles that have spanned decades with sequels being released and still garnering popularity. Unlike most FPS games which are run, gun and respawn. Rainbow Six Siege takes a different approach, requiring tactical precision and teamwork, rather than just rapid-fire twitch response.
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![rainbowsixsiege](https://hothardware.com/ContentImages/Article/2793/content/rainbowsixsiege.jpg)
Rainbow Six Siege
![R6%20Siege%201440p%20FPS](https://hothardware.com/ContentImages/Article/2793/content/R6%20Siege%201440p%20FPS.jpg)
![R6%20Siege%202160p%20FPS](https://hothardware.com/ContentImages/Article/2793/content/R6%20Siege%202160p%20FPS.jpg)
This time we see something that honestly was a bit surprising. The GeForce GTX 1080 Ti cards actually lose performance, though that in itself is not much of a surprise as some games simply do not utilize multi-GPU very well. However, add to this the fact that the RTX cards in NVLink show a 21.34% scaling increase at 1440p and a 49.57% increase at 4K tells us that NVLink is a completely different animal entirely. Just for the sake of having all numbers accounted for, the 1080 Tis in HB SLI showed at 1440p a -2.79% result, and at 4K a -7.50% result.
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![F1%202018](https://hothardware.com/ContentImages/Article/2793/content/F1%202018.jpg)
F1 2018
![F1%202018%201440p%20FPS](https://hothardware.com/ContentImages/Article/2793/content/F1%202018%201440p%20FPS.jpg)
![F1%202018%202160p%20FPS](https://hothardware.com/ContentImages/Article/2793/content/F1%202018%202160p%20FPS.jpg)
What we see in F1 2018 is a bit of a mixed bag and observe what may be a CPU bottleneck for the RTX 2080 Ti cards at 1440p. Here RTX shows only a 19.61% increase, while the GeForce GTX 1080 Tis in HB SLI show a commanding 31.90% scaling increase over a single card.
Bump the resolution to 4K and the GeForce RTX cards jump to life, delivering a NVLink scaling result of 65.26% while the 1080 Tis in HB SLI drop a bit, likely finding their limit and only delivering a 22.86% scaling over our single GPU results.