Best answer: The GTX 1080 Ti can game at 4K but given current prices, it's not recommended at all. For the absolute best performance you need to get the new RTX 2080 Ti, or on a tighter budget, the RTX 2080
NVIDIA RTX 2080 Ti 4K benchmarks
The RTX 2080 Ti is NVIDIA's new consumer graphics card king, though it comes at a price. About double what you'll pay for a GTX 1080 Ti, but it's certainly packing where it matters. Besides providing access to the RTX platform enabling things like dynamic ray tracing, the RTX 2080 Ti has more raw performance thanks to the new Turing architecture.
The folks at Tom's Guide have run some benchmarks at both 4K and 1440p to show just how capable it really is.
|Game||RTX 2080 Ti (4K)||RTX 2080 Ti (1440p)|
|Destiny 2||91.6 FPS average||163.2 FPS average|
|Rise of the Tomb Raider||80.4 FPS average||97.8 FPS average|
|GTA V||97.7 FPS average||99.7 FPS average|
|Far Cry 5||71.7 FPS average||118.4 FPS average|
|The Witcher 3||94.1 FPS average||156.3 FPS average|
NVIDIA GTX 1080 Ti 4K benchmarks
We ran some benchmarks on a selection of popular and demanding PC games at 4K to show what the GTX 1080 TI is capable of in comparison to the RTX 2080 Ti.
All were run at the highest graphics settings.
|Game||GTX 1080 Ti (4K)||GTX 1080 Ti (1440p)|
|Gears of War 4||50.6 FPS average||109.1 FPS average|
|Rise of the Tomb Raider||60.04 FPS average||113.1 FPSaverage|
|GTA V||60.1 FPS average||73.7 FPS average|
|PUBG||34 FPS average||68.9 FPS average|
Getting to the magic 60 FPS in all games on highest graphics isn't possible and requires compromise.
The contrast is that the RTX 2080 Ti absolutely crushes the GTX 1080 Ti at 4K, with high frame rates on the highest graphics settings easily achievable.
The new card is unbeatable
Right now, an RTX 2080 Ti is one of the best graphics card options you can get for 4K gaming. The only real drawback is the price, which is high. Really high.
However, the PC hardware market rarely sits still for long, and prices will fall. If you want to dip a toe into some 4K gaming though without spending as much, the GTX 1080 Ti is there, but prices have gone back up to around $1,000 at most retailers right now, and it's not worth that in 2019.
If you're looking for something a little less expensive but still capable, the RTX 2080 is about half the price but still edges ahead of the GTX 1080 Ti in raw performance.
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