Will the Core i7-12700K 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 i7-12700K has headroom to spare. This is a model estimate from performance indexes, not a measured FPS loss.

What power supply do I need for a Core i7-12700K and GTX 1080 Ti?

Sustained gaming load is about 496 W using the GTX 1080 Ti's measured draw. A 750 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 21% (GPU-bound (normal)). 1440p: GPU-limited 28% (GPU-bound (normal)). 4K: GPU-limited 45% (CPU overkill).

Core i7-12700K + GTX 1080 Ti: bottleneck check

28%

GPU-limited at 1440p. GPU-bound (normal).

CPU GPU

The GTX 1080 Ti is the part working hardest at 1440p, which is what you want. The Core i7-12700K keeps about 28% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	21%	GPU-bound (normal)
1440p	GPU	28%	GPU-bound (normal)
4K	GPU	45%	CPU overkill

The GTX 1080 Ti is the limit at every resolution and by a wide margin at 4K (45%). The Core i7-12700K is overkill for this card: a faster GPU would give you far more frames than any CPU change.

Specifications

Intel Core i7-12700K
Cores / threads	12 / 20
Max boost	5.0 GHz
Socket	LGA1700
Maximum turbo power (MTP)	190 W Intel's published maximum sustained turbo power, above its base power; the PSU estimate uses it, so it errs high · Intel ARK
Released	2021
Gaming index	75 / 100
Multi-core index	72 / 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

The GTX 1080 Ti measured 231 W average while gaming (267 W peak, TechPowerUp). With the Core i7-12700K at its maximum turbo power of 190 W and about 75 W for the rest of the system, the sustained load is about 496 W. A 750 W unit is the safe choice. Details on the GTX 1080 Ti PSU page or try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1700

Cards that use the Core i7-12700K fully

Best CPU for the GTX 1080 Ti Best GPU for the Core i7-12700K 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.