Will the Core i7-11700K bottleneck the GTX 1080 Ti?

No. At 1440p the GTX 1080 Ti is the limiting part, which is the normal state for a gaming PC. The Core i7-11700K has headroom to spare.

What power supply do I need for a Core i7-11700K and GTX 1080 Ti?

Estimated system load is about 475 W. A quality 650 W unit leaves roughly 30% headroom for transient spikes.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 4% (balanced). 1440p: GPU-limited 13% (balanced). 4K: GPU-limited 33% (GPU-bound (normal)).

PCPairs

Core i7-11700K + GTX 1080 Ti: bottleneck check

13%

Balanced at 1440p.

CPU GPU

Well matched at 1440p. The GTX 1080 Ti is the slightly busier part, by about 13%.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	4%	balanced
1440p	GPU	13%	balanced
4K	GPU	33%	GPU-bound (normal)

The GTX 1080 Ti is the limiting part at every resolution, which is the healthy direction, and the gap is small enough that neither part is wasted. Upgrade the GPU first when you want more frames.

Specifications

Intel Core i7-11700K
Cores / threads	8 / 16
Max boost	5.0 GHz
Socket	LGA1200
Max turbo power	125 W
Released	2021
Gaming index	62 / 100
Multi-core index	54 / 100

NVIDIA GeForce GTX 1080 Ti
VRAM	11 GB
Board power	250 W
Released	2017
1080p index	28.7 / 100
1440p index	23 / 100
4K index	18.4 / 100

Power supply

CPU 125 W + GPU 250 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 475 W. We recommend a 650 W unit (80 Plus Gold or better) so transient spikes from the graphics card stay inside the PSU's comfort zone. Try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1200

Cards that use the Core i7-11700K fully

Best CPU for the GTX 1080 Ti Best GPU for the Core i7-11700K GTX 1080 Ti PSU requirements

Same CPU, other cards

All

Same card, other CPUs

All

Indexes are relative estimates aggregated from published reviews; real results vary by game, settings, memory speed and drivers. Methodology.