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Comparison Table
Humminbird Helix 7 Chirp MDI GPS G4  | Humminbird Helix 7 Chirp MSI GPS G4  | |
| Display Size | 7″ | 7″ |
| Display Resolution | 1024H x 600V | 1024H x 600V |
| Standard Sonars | Dual Spectrum CHIRP, MEGA Down Imaging | Dual Spectrum CHIRP, MEGA Down Imaging, MEGA Side Imaging |
| Coverage | 20°, 42°, 60° & (2) 86° @ -10dB | 20°, 42°, 60° & (2) 86° @ -10dB |
| CHIRP Frequencies | 83/200 (75-155/130-250 kHz), Full Mode (150-220 kHz), Narrow Mode (180-240 kHz), Wide Mode (140-200 kHz) | 83/200 (75-155/130-250 kHz), Full Mode (150-220 kHz), Narrow Mode (180-240 kHz), Wide Mode (140-200 kHz) |
| Sonar Frequencies | 50/83/200/455/800 kHz & 1.2 MHz | 50/83/200/455/800 kHz & 1.2 MHz |
| Sonar Depth | 1,200 ft (standard transducer), 3,500 ft (optional 50 kHz) | 1,200 ft (standard transducer), 3,500 ft (optional 50 kHz) |
| CHIRP Imaging Frequencies | 455 kHz (440-500 kHz), MEGA DI (1075-1150 kHz) | 455 kHz (440-500 kHz), MEGA DI (1075-1150 kHz), MEGA SI (1075-1150 kHz) |
| Down Imaging Depth | 400 ft (455 kHz), 75 ft (MEGA) | 400 ft (455 kHz), 75 ft (MEGA) |
| Side Imaging Range | 800 ft (455 kHz) | 800 ft (455 kHz), 250 ft (MEGA) |
| Memory Card | Single Micro SD | Single Micro SD |
| Compatibility | AIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI | AIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI |
| Power Input | 10.8-20 VDC | 10.8-20 VDC |
| Power Output Max | 4000 Watts | 4000 Watts |
| Power Output Cont. | 500 Watts | 500 Watts |
| Screen Snapshot | Included | Included |
| Sonar Recording | Included | Included |
| Transducer Location | Transom | Transom |
| GPS Chartplotting | Included | Included |
| GPS Trackplotting | Included | Included |
| Lakemaster Compatible | Yes | Yes |
| Coastmaster Compatible | Yes | Yes |
| Navionics Compatible | Yes | Yes |
| Temperature Sensor | Built In | Built In |
| Included Transducer | XNT 9 HW MDI 75 T | XNT 9 HW MSI 150 T |
| HDMI Compatible | No | No |
| MEGA Live Compatible | No | No |
Key Differences
The Humminbird Helix 7 Chirp MDI GPS G4 fish finder has Dual Spectrum CHIRP and MEGA Down Imaging sonar capabilities, and is compatible with AIS, AutoPilot, Minn Kota US2 Sonar, and Minn Kota Built-In MEGA DI.
The Humminbird Helix 7 Chirp MSI GPS G4 fish finder has Dual Spectrum CHIRP, MEGA Down Imaging, and MEGA Side Imaging sonar capabilities, and is also compatible with AIS, AutoPilot, Minn Kota US2 Sonar, and Minn Kota Built-In MEGA DI.
The key difference between the Humminbird Helix 7 Chirp MDI GPS G4 and the Humminbird Helix 7 Chirp MSI GPS G4 fish finders is that the latter also has MEGA Side Imaging sonar capabilities.
Related Comparisons
- Humminbird Helix 7 Chirp MDI GPS G4 vs MSI GPS G4
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- Humminbird Helix 7 Chirp MSI GPS G4 vs G4N
