Will the Core i5-14600K bottleneck the RX 6750 XT?

No. At 1440p the RX 6750 XT is the limiting part, which is the normal state for a gaming PC. The Core i5-14600K 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 i5-14600K and RX 6750 XT?

Sustained gaming load is about 542 W using the RX 6750 XT's measured draw. A 750 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 18% (balanced). 1440p: GPU-limited 25% (GPU-bound (normal)). 4K: GPU-limited 42% (CPU overkill).

Core i5-14600K + RX 6750 XT: bottleneck check

25%

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

CPU GPU

The RX 6750 XT is the part working hardest at 1440p, which is what you want. The Core i5-14600K keeps about 25% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	18%	balanced
1440p	GPU	25%	GPU-bound (normal)
4K	GPU	42%	CPU overkill

The RX 6750 XT is the limit at every resolution and by a wide margin at 4K (42%). The Core i5-14600K is overkill for this card: a faster GPU would give you far more frames than any CPU change.

Specifications

Intel Core i5-14600K
Cores / threads	14 / 20
Max boost	5.3 GHz
Socket	LGA1700
Maximum turbo power (MTP)	181 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	80 / 100
Multi-core index	76 / 100

AMD Radeon RX 6750 XT
VRAM	12 GB
Board power	250 W
Released	2022
1080p index	39.0 / 100
1440p index	33 / 100
4K index	27.9 / 100

Power supply

The RX 6750 XT measured 286 W average while gaming (407 W highest 20 ms spike, TechPowerUp). With the Core i5-14600K at its maximum turbo power of 181 W and about 75 W for the rest of the system, the sustained load is about 542 W. A 750 W unit is the safe choice. Details on the RX 6750 XT PSU page or try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1700

Cards that use the Core i5-14600K fully

Best CPU for the RX 6750 XT Best GPU for the Core i5-14600K RX 6750 XT 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.