There are multiple factors that affect the capacity of an AP.
- Protocol used (802.11b vs 802.11a/g vs 802.11n)
- Channelization (20 MHz vs 40 MHz)
- RF conditions (multi-path, noise, adjacent channel and/or co-channel interference, etc)
- AP typ...
With all things being equal between APs and with the RF environment, the greatest factor affecting capacity is the capability of the clients. Although this may sound obvious, it is often forgotten. An AP that is not otherwise limited (see below) co...