These graphics cards perform the same on paper, but have some key differences in prices and promises.

The long-awaited GeForce RTX 2080 and RTX 2080 Ti are finally here, new “RTX” moniker and all, and well, they’re mighty impressive pieces of kit. Nvidia infused the radical Turing GPU at their hearts with dedicated RT and tensor cores to (hopefully) ignite a gaming future brimming with ray tracing and AI-enhanced graphics. The GeForce RTX 2080 Ti is the fastest graphics card ever, full stop. But I’ve heard plenty of people wondering: Should I buy a GeForce RTX 2080 or a GeForce GTX 1080 Ti?

Nvidia’s new RTX graphics cards cost significantly more than their predecessors. But prices for the GeForce GTX 1080 Ti—Nvidia’s powerful, previous-gen flagship—have started relaxing in recent weeks after spending most of 2018 inflated by wild cryptocurrency demand.
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https://www.pcworld.com/article/3307439/nvidia-geforce-rtx-2080-vs-gtx-1080-ti-which-graphics-card-buy.html