Enthusiasts are looking forward to NVIDIA's next generation of GPUs as a cryptocurrency mining boom is driving the prices of video cards way up. However, whenever there is a boom it is usually followed by a bust, and perhaps inexpensive used and even new Pascal video cards may become available in large quantities before too long.

Some gamers may be tempted to wait for the next generation's highest-end video cards by buying a second GTX 1070/1070 Ti/1080/1080 Ti for SLI as an interim solution, and skipping the second-tier next-generation cards that may be offered first. How well does Pascal SLI scale and is it worth buying a second video card for SLI if and when they become reasonably priced?