Choosing between two marine chartplotters usually comes down to screen size, features, and price. That equation changes when one option is a fully functional unit and the other is a non-powered head unit. The Garmin GPSMAP 1222 and Simrad NSS7 EVO3 both appear in the marine electronics sonar navigation category, but they answer completely different needs.
For a boater who wants a unit that can be mounted and used immediately, the condition is the first filter. A chartplotter that won't start isn't a navigation tool; it's a repair project. So the decision starts with what you plan to do with the unit, not just with how much it costs.
Quick verdict: If you need a chartplotter you can mount and use this season, the Garmin GPSMAP 1222 is the clear choice. It's a used unit in fully working condition, with a large screen and solid navigation capability, for $1,300. The Simrad NSS7 EVO3, priced at $394.94, is only suitable for someone who wants a donor unit for compatible Simrad parts and is comfortable with a device that doesn't power on.
| Feature | Garmin GPSMAP 1222 | Simrad NSS7 EVO3 |
|---|---|---|
| Price | USD 1,300.00 | USD 394.94 |
| Condition | Used, fully tested and functional | For parts or not working |
| Display | 12-inch | Cracked screen |
| Power status | Functional | Does not power on |
| Included capabilities | Chart plotting, internal GPS/GLONASS, network capable | Chartplotter, fishfinder, sonar, radar, GPS |
| Warranty | 1-year manufacturer warranty | 90-day warranty |
Where each wins: The Garmin GPSMAP 1222 wins on readiness. Its working condition means you can install it and head out without additional repair work. The screen is easier to read than the Simrad's, which helps when navigating at speed. The Simrad NSS7 EVO3 wins on price and on being the only unit in this pair that could serve as a donor for its own model. If your plan is to repair a similar Simrad head unit, the lower-priced Simrad is the one to consider. But if you're choosing between a working chartplotter and a non-working one, the working unit wins unless the non-working unit is exactly what your repair project needs.
Garmin GPSMAP 1222
The Garmin GPSMAP 1222 is the straightforward pick for boaters who want a large, readable screen and all-in-one navigation without needing a service bench. Its 12-inch sunlight-readable display, 1280 x 800 resolution, and internal GPS/GLONASS receiver make it a strong fit for offshore fishing, cruising, and center-console installations. It also includes chart plotting and network capability for compatible Garmin marine systems. The catch is price: it costs far more than the Simrad. And because it is a used unit, you are accepting normal cosmetic wear, though it is fully tested and functional. If you can absorb the investment and need a unit that is ready to run, this is the one.
Simrad NSS7 EVO3
The Simrad NSS7 EVO3 enters the conversation at a much lower price, but its condition makes clear it is not a working unit: the screen is cracked and the touchscreen and buttons are non-responsive. It still carries a 90-day warranty, which can provide a little protection on a parts purchase. The main reason to choose this unit is if you are deliberately looking for a donor head unit to harvest compatible Simrad parts. It is not suitable for someone who wants to mount a working chartplotter today. The lower price only makes sense as a repair project, and you would need to know exactly what you are buying before spending on this unit.
Final choice by use case: Choose the Garmin GPSMAP 1222 if you plan to head out this season and want a unit that's ready to use. Choose the Simrad NSS7 EVO3 only if you need a parts donor for a non-working display.
