GPU Upgrade Calculator
Compare normalized GPU performance, VRAM and power data, then include your CPU and current FPS to see how much of the theoretical upgrade may be usable.
Enter your configuration
Calculated planning result
Compatibility checks before buying
- Confirm PSU wattage and native connector guidance from the GPU manufacturer and board partner.
- Check card length, thickness, slot clearance, support bracket and case airflow.
- Verify display outputs, driver support and any required adapter or native cable.
Planning estimate only — verify important upgrade decisions with measurements, compatibility checks and independent benchmarks.
How to interpret the result
Use the estimated FPS as a planning scenario, not a benchmark. A CPU-limit warning means the selected processor may prevent the new GPU from delivering its full normalized score uplift.
Calculation methodology
The tool compares internal normalized GPU scores. It caps usable GPU score at 115% of the selected CPU score, scales the entered FPS by the effective score ratio, and separately reports VRAM and board-power changes.
The calculator runs in your browser from the values you select. Estimates use transparent planning rules and the site’s normalized hardware data; they are not lab benchmarks.
Formula or model used
Estimated gain = (new effective GPU score / current effective GPU score - 1) x 100
Calculation steps
- Compare the current and proposed GPU normalized scores.
- Apply a CPU-side ceiling to both GPU scores.
- Scale current FPS by the effective ratio and compare VRAM and power.
Assumptions and limitations
- Normalized scores are editorial comparison inputs, not measured FPS for every game.
- Drivers, game engine, resolution, ray tracing, cooling and power limits can change real gains.
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