https://devzone.nordicsemi.com/f/nordic-q-a/3565/nrf51-much-slower-than-nrf24Hello! The company for which I work is migrating from NRF24 to NRF51. Our protocol relies on ESB and uses payloads of 32 bytes and payloads in ack (also 32 bytes). With NRF24, the PTX could send (and receive the payload ack) each 800&#181;s. Withen-USTelligent Community 13Mon, 08 Sep 2014 12:03:48 GMThttps://devzone.nordicsemi.com/thread/12932?ContentTypeID=1Mon, 08 Sep 2014 12:03:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:69b68b9f-a343-4ddb-a80c-5910b6dbc827H&#229;kon Alseth<p>Hi Nicolas,</p> <p>Your observations are correct. The data throughput with nRF51 ESB/GZLL is limited to ~213 kBit/s (32 * 8 / 1.2ms) due to the low-level state machine being synchronous in both ESB/GZLL for nRF51. If you need more throughput, I would recommend that you look at microESB, which a colleague of mine has developed:</p> <p><a href="https://github.com/NordicSemiconductor/nrf51-micro-esb">github.com/.../nrf51-micro-esb</a></p> <p>Cheers, Håkon</p><div style="clear:both;"></div>