Core i9-13900K + RX 6800 XT 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.

1080p60–84 fps · Strong GPU limit 1440p47–68 fps · Strong GPU limit 4K29–44 fps · Strong GPU limit

1080p

Strong GPU limit

Expected frame rate: 60–84 fps (measured range across sources).

CPU Core i9-13900Kceiling ~139–156 fps on its own

GPU RX 6800 XTceiling ~60–84 fps on its own

The GPU side is lower by about 51.2%: 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: HIGH — based on 4 source measurements for these two parts.

1440p

Strong GPU limit

Expected frame rate: 47–68 fps (measured range across sources).

CPU Core i9-13900Kceiling ~139–156 fps on its own

GPU RX 6800 XTceiling ~47–68 fps on its own

The GPU side is lower by about 61.0%: 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: HIGH — based on 4 source measurements for these two parts.

4K

Strong GPU limit

Expected frame rate: 29–44 fps (measured range across sources).

CPU Core i9-13900Kceiling ~139–156 fps on its own

GPU RX 6800 XTceiling ~29–44 fps on its own

The GPU side is lower by about 75.3%: the pair runs at the lower ceiling, and upgrading the other part alone would not raise it.

That range sits under a smooth 60 in this game at the tested preset — expect to trade settings for frame rate.

Confidence: HIGH — based on 4 source measurements for these two parts.

No GPU measured in this game at 1440p fully clears this CPU - the strongest measured option:

RTX 5090 — ceiling ~134 fps (still the limiting side, but the highest measured ceiling) · full result

This pair in other measured games

Alan Wake 2 — this pair is not both measured there yet.
Baldur's Gate 3 — Balanced, 122–122 fps at 1440p
Counter-Strike 2 — this pair is not both measured there yet.
Cyberpunk 2077 — this pair is not both measured there yet.
Elden Ring — this pair is not both measured there yet.
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.