Will the Core i5-14400F bottleneck the RX 6600?

No. At 1440p the RX 6600 is the limiting part, which is the normal state for a gaming PC. The Core i5-14400F 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 i5-14400F and RX 6600?

Sustained gaming load is about 343 W using the RX 6600's measured draw. A 550 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 19% (balanced). 1440p: GPU-limited 27% (GPU-bound (normal)). 4K: GPU-limited 44% (CPU overkill).

PCPairs

Core i5-14400F + RX 6600: bottleneck check

27%

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

CPU GPU

The RX 6600 is the part working hardest at 1440p, which is what you want. The Core i5-14400F keeps about 27% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	19%	balanced
1440p	GPU	27%	GPU-bound (normal)
4K	GPU	44%	CPU overkill

The RX 6600 is the limit at every resolution and by a wide margin at 4K (44%). The Core i5-14400F is overkill for this card: a faster GPU would give you far more frames than any CPU change.

Specifications

Intel Core i5-14400F
Cores / threads	10 / 16
Max boost	4.7 GHz
Socket	LGA1700
Maximum turbo power (MTP)	148 W Intel's published maximum sustained turbo power, above its base power; the PSU estimate uses it, so it errs high · Intel ARK
Released	2024
Gaming index	72 / 100
Multi-core index	60 / 100

AMD Radeon RX 6600
VRAM	8 GB
Board power	132 W
Released	2021
1080p index	26.5 / 100
1440p index	21 / 100
4K index	16.6 / 100

Power supply

The RX 6600 measured 120 W average while gaming (249 W highest 20 ms spike, TechPowerUp). With the Core i5-14400F at its maximum turbo power of 148 W and about 75 W for the rest of the system, the sustained load is about 343 W. A 550 W unit is the safe choice. Details on the RX 6600 PSU page or try other pairs in the PSU calculator.

Upgrade paths

CPUs that remove the bottleneck

LGA1700

Cards that use the Core i5-14400F fully

Best CPU for the RX 6600 Best GPU for the Core i5-14400F RX 6600 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.