Ryzen 7 5800X3D + RTX 4080 Super in Starfield

Every figure below is a measurement aggregated from published review charts — the CPU's frame-rate ceiling and the GPU's frame-rate ceiling in this game, combined. Settings: Ultra preset, native rendering, no upscaling, no frame generation. CPU ceiling measured at 1080p, Low preset (reviewers' CPU-isolation method), flagship GPU.

1080p94–121 fps · Balanced pairing 1440p94–101 fps · Mild GPU limit 4K70–70 fps · Strong GPU limit

1080p

Balanced pairing

Expected frame rate: 94–121 fps (measured range across sources).

CPU Ryzen 7 5800X3Dceiling ~94–148 fps on its own

GPU RTX 4080 Superceiling ~121 fps on its own

The two measured ceilings sit within 0.2% of each other — neither part wastes much of the other.

That range suits a 60 Hz monitor; a high-refresh panel would be underused in this game.

Confidence: LOW — based on 3 source measurements for these two parts.

1440p

Mild GPU limit

Expected frame rate: 94–101 fps (measured range across sources).

CPU Ryzen 7 5800X3Dceiling ~94–148 fps on its own

GPU RTX 4080 Superceiling ~101 fps on its own

The GPU side is lower by about 16.1%: the pair runs at the lower ceiling, and upgrading the other part alone would not raise it.

That range suits a 60 Hz monitor; a high-refresh panel would be underused in this game.

Confidence: LOW — based on 3 source measurements for these two parts.

4K

Strong GPU limit

Expected frame rate: 70–70 fps (measured range across sources).

CPU Ryzen 7 5800X3Dceiling ~94–148 fps on its own

GPU RTX 4080 Superceiling ~70 fps on its own

The GPU side is lower by about 42.4%: the pair runs at the lower ceiling, and upgrading the other part alone would not raise it.

That range suits a 60 Hz monitor; a high-refresh panel would be underused in this game.

Confidence: LOW — based on 3 source measurements for these two parts.

GPUs measured in this game at 1440p that clear this CPU:

RTX 5090 — ceiling ~134 fps (smallest step that removes the limit) · full result

This pair in other measured games

Alan Wake 2 — this pair is not both measured there yet.
Baldur's Gate 3 — this pair is not both measured there yet.
Counter-Strike 2 — this pair is not both measured there yet.
Cyberpunk 2077 — this pair is not both measured there yet.
Elden Ring — Balanced, 152–152 fps at 1440p
Kingdom Come: Deliverance II — this pair is not both measured there yet.
Marvel's Spider-Man 2 — this pair is not both measured there yet.
S.T.A.L.K.E.R. 2 — this pair is not both measured there yet.

Sources for Starfield

Full data: Starfield benchmarks · how verdicts are computed.