Will the Ryzen 7 5700X3D bottleneck the RTX 3090?

No. At 1440p the RTX 3090 is the limiting part, which is the normal state for a gaming PC. The Ryzen 7 5700X3D has headroom to spare.

What power supply do I need for a Ryzen 7 5700X3D and RTX 3090?

Estimated system load is about 555 W. A quality 750 W unit leaves roughly 30% headroom for transient spikes.

Is this pair better at 1080p or 4K?

1080p: GPU-limited 1% (balanced). 1440p: GPU-limited 9% (balanced). 4K: GPU-limited 28% (GPU-bound (normal)).

PCPairs

Ryzen 7 5700X3D + RTX 3090: bottleneck check

Balanced at 1440p.

CPU GPU

Well matched at 1440p. The RTX 3090 is the slightly busier part, by about 9%.

By resolution

Resolution	Limiting part	Severity	Verdict
1080p	GPU	1%	balanced
1440p	GPU	9%	balanced
4K	GPU	28%	GPU-bound (normal)

The RTX 3090 is the limiting part at every resolution, which is the healthy direction, and the gap is small enough that neither part is wasted. Upgrade the GPU first when you want more frames.

Specifications

AMD Ryzen 7 5700X3D
Cores / threads	8 / 16
Max boost	4.1 GHz
Socket	AM4
Max turbo power	105 W
Released	2024
Gaming index	74 / 100
Multi-core index	56 / 100

NVIDIA GeForce RTX 3090
VRAM	24 GB
Board power	350 W
Released	2020
1080p index	51.7 / 100
1440p index	46 / 100
4K index	40.9 / 100

Power supply

CPU 105 W + GPU 350 W + about 100 W for motherboard, memory, storage and fans gives an estimated peak load of 555 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

AM4

Cards that use the Ryzen 7 5700X3D fully

Best CPU for the RTX 3090 Best GPU for the Ryzen 7 5700X3D RTX 3090 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.