Will the Core i9-14900K bottleneck the RX 6650 XT?

No. At 1440p the RX 6650 XT is the limiting part, which is the normal state for a gaming PC. The Core i9-14900K 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 i9-14900K and RX 6650 XT?

Sustained gaming load is about 517 W using the RX 6650 XT's measured draw. A 650 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 31% (GPU-bound (normal)). 1440p: GPU-limited 37% (GPU-bound (normal)). 4K: GPU-limited 52% (CPU overkill).

Core i9-14900K + RX 6650 XT: bottleneck check

37%

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

CPU GPU

The RX 6650 XT is the part working hardest at 1440p, which is what you want. The Core i9-14900K keeps about 37% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	31%	GPU-bound (normal)
1440p	GPU	37%	GPU-bound (normal)
4K	GPU	52%	CPU overkill

The RX 6650 XT is the limit at every resolution and by a wide margin at 4K (52%). The Core i9-14900K is overkill for this card: a faster GPU would give you far more frames than any CPU change.

Specifications

Intel Core i9-14900K
Cores / threads	24 / 32
Max boost	6.0 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	87 / 100
Multi-core index	95 / 100

AMD Radeon RX 6650 XT
VRAM	8 GB
Board power	180 W
Released	2022
1080p index	29.7 / 100
1440p index	24 / 100
4K index	19.4 / 100

Power supply

The RX 6650 XT measured 189 W average while gaming (286 W highest 20 ms spike, TechPowerUp). With the Core i9-14900K at its maximum turbo power of 253 W and about 75 W for the rest of the system, the sustained load is about 517 W. A 650 W unit is the safe choice. Details on the RX 6650 XT PSU page or try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1700

Cards that use the Core i9-14900K fully

Best CPU for the RX 6650 XT Best GPU for the Core i9-14900K RX 6650 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.