Will the Core i5-14600K bottleneck the RX 5700 XT?

No. At 1440p the RX 5700 XT is the limiting part, which is the normal state for a gaming PC. The Core i5-14600K has headroom to spare.

What power supply do I need for a Core i5-14600K and RX 5700 XT?

Estimated system load is about 506 W. A quality 750 W unit leaves roughly 30% headroom for transient spikes.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 26% (GPU-bound (normal)). 1440p: GPU-limited 33% (GPU-bound (normal)). 4K: GPU-limited 48% (CPU overkill).

PCPairs

Core i5-14600K + RX 5700 XT: bottleneck check

33%

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

CPU GPU

The RX 5700 XT is the part working hardest at 1440p, which is what you want. The Core i5-14600K keeps about 33% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	26%	GPU-bound (normal)
1440p	GPU	33%	GPU-bound (normal)
4K	GPU	48%	CPU overkill

The RX 5700 XT is the limit at every resolution and by a wide margin at 4K (48%). 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
Max turbo power	181 W
Released	2023
Gaming index	80 / 100
Multi-core index	76 / 100

AMD Radeon RX 5700 XT
VRAM	8 GB
Board power	225 W
Released	2019
1080p index	28.7 / 100
1440p index	23 / 100
4K index	18.4 / 100

Power supply

CPU 181 W + GPU 225 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 506 W. We recommend a 750 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

LGA1700

Cards that use the Core i5-14600K fully

Best CPU for the RX 5700 XT Best GPU for the Core i5-14600K RX 5700 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.