This page lists the GNSS chipsets that are used in the Garmin Forerunner watches.
The various models are listed in reverse-chronological order. The release dates are generally from Wikipedia.
| Model | Released | API | Chipset | References |
|---|---|---|---|---|
| Forerunner 165 [Music] | 2024-02 | 5.0.x | AG3335MN or AG3352? | Garmin manual + the5krunner |
| Forerunner 965 | 2023-03 | 5.0.x | AG3335M | Garmin manual + TechInsights |
| Forerunner 265 / 265S | 2023-03 | 5.0.x | AG3335M | Garmin manual |
| Forerunner 955 [Solar] | 2022-06 | 5.0.x | AG3335M | Garmin manual + reddit |
| Forerunner 255 / 255S [Music] | 2022-06 | 5.0.x | AG3335M | Garmin manual + DCR review |
Additional notes about the Airoha chipsets are available on another page.
| Model | Released | API | Chipset | References |
|---|---|---|---|---|
| Forerunner 945 LTE | 2021-06 | 4.2.x | CXD56xxxx | |
| Forerunner 158 - Chinese 55 | 2021-06 | 3.4.x | CXD56xxxx | Garmin forum |
| Forerunner 55 | 2021-06 | 3.4.x | CXD56xxxx | |
| Forerunner 745 | 2020-09 | 3.3.x | CXD56xxxx | |
| Forerunner 45 Plus | 2020-08 | ? | CXD56xxxx | |
| Forerunner 45 / 45S | 2019-04 | 1.4.x | CXD5603GF | |
| Forerunner 945 | 2019-04 | 3.3.x | CXD5603GF | |
| Forerunner 245 | 2019-04 | 3.3.x | CXD5603GF | iFixit teardown |
Additional notes about the Sony chipsets are available on another page.
| Model | Released | API | Chipset | References |
|---|---|---|---|---|
| Forerunner 645 Music | 2018-01 | 3.2.x | MT3333 | |
| Forerunner 645 | 2018-01 | 3.1.x | MT3333 | |
| Forerunner 30 | 2017-09 | - | MT3333 | |
| Forerunner 935 | 2017-03 | 3.1.x | MT3333 | |
| Forerunner 35 | 2016-08 | - | MT3333 | |
| Forerunner 735XT | 2016-05 | 2.4.x | MT3333 | iFixit teardown |
| Forerunner 630 | 2015-10 | 1.4.x | MT3333 | Tech T teardown |
| Forerunner 235 | 2015-10 | 1.4.x | MT3333 | fellrnr.com |
| Forerunner 230 | 2015-10 | 1.4.x | MT3333 | Embedded teardown |
| Forerunner 25 | 2015-08 | - | MT333x | |
| Forerunner 225 | 2015-05 | - | MT333x | fellrnr.com |
| Forerunner 920XT | 2014-10 | 1.4.x | MT3333 | |
| Forerunner 15 | 2014-05 | - | MT333x | |
| Forerunner 620 | 2013-09 | - | MT333x | fellrnr.com |
| Forerunner 220 | 2013-09 | - | MT3333 | EE World teardown |
| Forerunner 10 | 2012-08 | - | MT333x | fellrnr.com |
Additional notes about the Mediatek chipsets are available on another page.
| Model | Released | API | Chipset | References |
|---|---|---|---|---|
| Forerunner 910XT | 2011-10 | SiRFstarIV | DCR review | |
| Forerunner 610 | 2011-04 | SiRFstarIV | DCR review | |
| Forerunner 410 | 2010-10 | SiRFstarIV | ||
| Forerunner 210 | 2010-10 | SiRFstarIV | ||
| Forerunner 110 | 2010-03 | SiRFstarIV | ||
| Forerunner 405CX | 2009-04 | SiRFstarIII | ||
| Forerunner 310XT | 2009-04 | SiRFstarIII | ||
| Forerunner 60 | 2009-01 | SiRFstarIII | ||
| Forerunner 405 | 2008-01 | SiRFstarIII | ||
| Forerunner 50 | 2007-08 | SiRFstarIII | ||
| Forerunner 305 | 2006-01 | SiRFstarIII | Wikipedia | |
| Forerunner 205 | 2006-01 | SiRFstarIII | Wikipedia | |
| Forerunner 301 | 2005-01 | SiRFstarII | ||
| Forerunner 201 | 2003-08 | SiRFstarII | ||
| Forerunner 101 | 2003-03 | SiRFstarII |