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 the best single graphics card 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.

The best

NVIDIA RTX 2080 Ti

For now, this is the single best GPU for 4K gaming.

The RTX 2080 Ti is the absolute king of 4K gaming performance right now and while that comes at a price, it's simply unbeatable.

Budget pick

NVIDIA RTX 2080

Better and cheaper than a GTX 1080 Ti right now

Given current prices of the GTX 1080 Ti it shouldn't be considered even on a budget. The RTX 2080 Ti is better and cheaper and will get your game at 60 FPS at 4K.

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