# PCPartGuide

> Free PC bottleneck calculator: estimates whether the CPU or the GPU limits a gaming PC, the bottleneck percentage at 1080p/1440p/4K, estimated FPS per game and the cheapest fix. Data version 2026.09. The whole site is the calculator plus one pre-computed page per popular CPU + GPU pairing.

## Calculator
- [PC Bottleneck Calculator](https://pcpartguide.com/): pick a CPU, GPU, RAM kit and resolution. Any part can be preselected with a query string, for example https://pcpartguide.com/?cpu=ryzen-5-5600&gpu=rtx-4070&res=1440p

## Pages
- [CPU + GPU bottleneck checks](https://pcpartguide.com/bottleneck/): 258 pre-computed pairings, each with estimated FPS at 1080p, 1440p and 4K in 14 games
- [Methodology](https://pcpartguide.com/methodology/): the model, its data sources and its limits