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 | Product | Chipset | APPro? | References |
|---|---|---|---|---|---|---|
| Forerunner 165 Music | 2024-02 | 5.0.x | 4433 | AG3335MN ? | Y | Garmin manual + the5krunner |
| Forerunner 165 | 2024-02 | 5.0.x | 4432 | AG3335MN ? | Y | Garmin manual + the5krunner |
| Forerunner 965 | 2023-03 | 5.0.x | 4315 | AG3335M | Y | Garmin manual + TechInsights |
| Forerunner 265S | 2023-03 | 5.0.x | 4258 | AG3335M | Y | Garmin manual |
| Forerunner 265 | 2023-03 | 5.0.x | 4257 | AG3335M | Y | Garmin manual |
| Forerunner 955 [Solar] | 2022-06 | 5.0.x | 4024 | AG3335M | Y | Garmin manual + reddit |
| Forerunner 255S | 2022-06 | 5.0.x | 3993 | AG3335M | Y | Garmin manual + DCR review |
| Forerunner 255 | 2022-06 | 5.0.x | 3992 | AG3335M | Y | Garmin manual + DCR review |
| Forerunner 255S Music | 2022-06 | 5.0.x | 3991 | AG3335M | Y | Garmin manual + DCR review |
| Forerunner 255 Music | 2022-06 | 5.0.x | 3990 | AG3335M | Y | Garmin manual + DCR review |
? - single band so could be AG3335MN or AG3352.
Additional notes about the Airoha chipsets are available on another page.
| Model | Released | API | Product | Chipset | APPro? | References |
|---|---|---|---|---|---|---|
| Forerunner 55 (Asia) | 2021-06 | 3.4.x | 4033 | CXD56xxxx | Y | Garmin forum |
| Forerunner 945 LTE (Asia) | 2021-06 | 4.2.x | 3978 | CXD56xxxx | Y | |
| Forerunner 55 | 2021-06 | 3.4.x | 3869 | CXD56xxxx | Y | Garmin manual |
| Forerunner 745 (Asia) | 2020-09 | 3.3.x | 3794 | CXD56xxxx | Y | |
| Forerunner 945 LTE | 2021-06 | 4.2.x | 3652 | CXD56xxxx | Y | |
| Forerunner 745 | 2020-09 | 3.3.x | 3589 | CXD56xxxx | Y | |
| Forerunner 45 Plus | 2020-08 | 1.4.x | 3469 | CXD56xxxx | - | |
| Forerunner 45 / 45S | 2019-04 | 1.4.x | 3469 | CXD5603GF | - | |
| Forerunner 945 (Asia) | 2019-04 | 3.3.x | 3441 | CXD5603GF | Y | |
| Forerunner 245 Music | 2019-04 | 3.3.x | 3321 | CXD5603GF | Y | iFixit teardown |
| Forerunner 245 | 2019-04 | 3.3.x | 3145 | CXD5603GF | Y | |
| Forerunner 945 | 2019-04 | 3.3.x | 3113 | CXD5603GF | Y |
Additional notes about the Sony chipsets are available on another page.
| Model | Released | API | Product | Chipset | APPro? | References |
|---|---|---|---|---|---|---|
| Forerunner 645 Music | 2018-01 | 3.2.x | MT3333 | Y | ||
| Forerunner 645 | 2018-01 | 3.1.x | MT3333 | Y | ||
| Forerunner 30 | 2017-09 | - | MT3333 | - | ||
| Forerunner 935 | 2017-03 | 3.1.x | MT3333 | Y | ||
| 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 | Product | Chipset | APPro? | References |
|---|---|---|---|---|---|---|
| Forerunner 910XT | 2011-10 | - | SiRFstarIV | - | DCR review | |
| Forerunner 70 | 2011-10 | - | SiRFstarIV | - | ||
| 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 | - |