Will the Core i7-14700K bottleneck the RTX 3080?

No. At 1440p the RTX 3080 is the limiting part, which is the normal state for a gaming PC. The Core i7-14700K 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 i7-14700K and RTX 3080?

Sustained gaming load is about 664 W using the RTX 3080's measured draw. A 850 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 17% (balanced). 1440p: GPU-limited 24% (GPU-bound (normal)). 4K: GPU-limited 41% (CPU overkill).

PCPairs

Core i7-14700K + RTX 3080: bottleneck check

24%

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

CPU GPU

The RTX 3080 is the part working hardest at 1440p, which is what you want. The Core i7-14700K keeps about 24% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	17%	balanced
1440p	GPU	24%	GPU-bound (normal)
4K	GPU	41%	CPU overkill

The RTX 3080 is the limit at every resolution and by a wide margin at 4K (41%). The Core i7-14700K is overkill for this card: a faster GPU would give you far more frames than any CPU change.

Specifications

Intel Core i7-14700K
Cores / threads	20 / 28
Max boost	5.6 GHz
Socket	LGA1700
Maximum turbo power (MTP)	253 W Intel's published maximum sustained turbo power, above its base power; the PSU estimate uses it, so it errs high · Intel ARK
Released	2023
Gaming index	86 / 100
Multi-core index	90 / 100

NVIDIA GeForce RTX 3080
VRAM	10 GB
Board power	320 W
Released	2020
1080p index	47.8 / 100
1440p index	42 / 100
4K index	36.9 / 100

Power supply

The RTX 3080 measured 336 W average while gaming (422 W highest 20 ms spike, TechPowerUp). With the Core i7-14700K at its maximum turbo power of 253 W and about 75 W for the rest of the system, the sustained load is about 664 W. A 850 W unit is the safe choice. Details on the RTX 3080 PSU page or try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1700

Cards that use the Core i7-14700K fully

Best CPU for the RTX 3080 Best GPU for the Core i7-14700K RTX 3080 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.