Will the Ryzen 7 9800X3D bottleneck the RX 6600?

No. At 1440p the RX 6600 is the limiting part, which is the normal state for a gaming PC. The Ryzen 7 9800X3D 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 Ryzen 7 9800X3D and RX 6600?

Sustained gaming load is about 315 W using the RX 6600's measured draw. A 450 W unit is the safe choice.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 42% (CPU overkill). 1440p: GPU-limited 47% (CPU overkill). 4K: GPU-limited 60% (CPU overkill).

PCPairs

Ryzen 7 9800X3D + RX 6600: bottleneck check

47%

GPU-limited at 1440p. CPU overkill.

CPU GPU

The RX 6600 is the part working hardest at 1440p, which is what you want. The Ryzen 7 9800X3D keeps about 47% in reserve.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	42%	CPU overkill
1440p	GPU	47%	CPU overkill
4K	GPU	60%	CPU overkill

The RX 6600 is the limit at every resolution and by a wide margin at 4K (60%). The Ryzen 7 9800X3D is overkill for this card: a faster GPU would give you far more frames than any CPU change.

Specifications

AMD Ryzen 7 9800X3D
Cores / threads	8 / 16
Max boost	5.2 GHz
Socket	AM5
TDP	120 W manufacturer-published TDP — sustained turbo can be higher · AMD
Released	2024
Gaming index	100 / 100
Multi-core index	78 / 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 Ryzen 7 9800X3D at its TDP of 120 W and about 75 W for the rest of the system, the sustained load is about 315 W. A 450 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

AM5

Cards that use the Ryzen 7 9800X3D fully

Best CPU for the RX 6600 Best GPU for the Ryzen 7 9800X3D 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.