Results: AMD Ryzen 7 5800X + GeForce RTX 4090
AMD Ryzen 7 5800X and GeForce RTX 4090 paired: expected FPS in 10 games at 1080p, 1440p and 4K, bottleneck analysis and the recommended power supply wattage.
Prices in shops
Prices checked:
Prices at UK shops today
Stock and prices come from UK shops we track (Back to the Office, GamingKit, PCHUB.UK). Prices are in pounds and include VAT.
- AMD Ryzen 7 5800X: from £221.33 at GamingKit, 3 listings up to £243.48. Lowest in the last 30 days: £208.53.
What it costs to run in the UK
At full load the pair draws about 555 W. At 26.32p per kWh (Ofgem energy price cap, October to December 2026) that is £0.15 an hour of play, or about £107 a year at 2 hours a day.
Expected FPS
Average FPS on “High” settings
| 1080p FPS | 1440p FPS | 4K FPS | |
|---|---|---|---|
| Fortnite | 265 FPS | 265 FPS | 180 FPS |
| Counter-Strike 2 | 465 FPS | 465 FPS | 300 FPS |
| Cyberpunk 2077 | 145 FPS | 145 FPS | 95 FPS |
| Valorant | 560 FPS | 560 FPS | 415 FPS |
| COD: Warzone | 175 FPS | 175 FPS | 160 FPS |
| Battlefield 6 | 145 FPS | 145 FPS | 120 FPS |
| PUBG: Battlegrounds | 250 FPS | 250 FPS | 170 FPS |
| Rainbow Six Siege | 355 FPS | 355 FPS | 240 FPS |
| Marvel Rivals | 155 FPS | 120 FPS | 75 FPS |
| GTA V | 115 FPS | 115 FPS | 75 FPS |
| Red Dead Redemption 2 | 140 FPS | 140 FPS | 110 FPS |
| Escape from Tarkov | 85 FPS | 85 FPS | 85 FPS |
| Rust | 110 FPS | 110 FPS | 90 FPS |
| Minecraft | 355 FPS | 355 FPS | 355 FPS |
Bottleneck by resolution
Which component limits performance at each resolution
Power supply
Estimated load: 763 W · Recommended: 950 W
Put together a compatible build or compare component prices across retailers.
Other graphics cards with AMD Ryzen 7 5800X
Other processors with GeForce RTX 4090
Other comparisons
The figures are estimates - real FPS depends on the game, settings and drivers. The FPS model is calibrated against public TechPowerUp, Tom’s Hardware and Hardware Unboxed benchmarks. CPU and GPU calibration: July 2026 · Newest games added: September 2026. How we calculate FPS