Flat Preloader Icon
Select Page


Feature & Specs | Comparison


Feature & Specs | Comparison

  ReviewMarine is reader supported. We may earn a commission when you buy thru our links.

  ReviewMarine is reader supported.

We may earn a commission when you buy thru our links.

by | Last updated: Feb 20, 2024

Garmin Echomap UHD or UHD2:


Which One is Right for You?


The Garmin Echomap UHD and Echomap UHD2 are part of Garmins’ midrange fishfinder/chartplotter combo series that offer a variety of awesome features for the active fisherman. But which one is the best?

Short Answer: 

The UHD2… If you want a better screen, faster GPS, the latest charts, and Wi-Fi sonar, and data sharing between 2 or more units.

The UHD … If you run only one unit or can easily run network cables, want to save some money, and still get a great unit.



Garmin expands ECHOMAP UHD2 series ►


What are the main differences between the Garmin ECHOMAP UHD vs ECHOMAP UHD2?


  • Processor Speed
  • Screen Resolution
  • GPS Antenna
  • Sharing Sonar over WiFi
  • Mapping Options
  • Mounting Bracket
  • Physical Size


Here is an Infographic Table summarizing the differences between the two:


Comparison InfoGraphic

Garmin 942xs vs Echomap UHD 94sv Which one do I Choose
► Our - Top Picks ◄
Garmin ECHOMAP UHD2 | Models
9" | Models
93sv UHD2 | Navionics+ Inland
94sv UHD2 | Navionics+ Coastal
7" | Models
73sv UHD2 | Navionics+ Inland
74sv UHD2 | Navionics+ Coastal
73cv UHD2 | Navionics+ Inland
74cv UHD2 | Navionics+ Coastal
6" | Models
63sv UHD2 | Navionics+ Inland
64sv UHD2 | Navionics+ Coastal
See eBay Price »
See eBay Price »
See eBay Price »
See eBay Price »
See eBay Price »
See eBay Price »
See eBay Price »
See eBay Price »


Key Differences & Upgrades:


Chartplotter | Processor Speed: 

  • The UHD2 got an Upgraded & Faster Processor


Screen Resolution: 

  • The UHD2 9” models have a higher screen resolution.


Physical Size:

  • The height and depth dimensions within the 6”,7” and 9” units are similar but all 3 UHD2s are between ½” and 1” narrower than their UHD counterparts. 


GPS Reception: 

  • The UHD2 models have a slightly faster 10Hz GPS with GLONASS, Galileo, and BeiDou
  • UHD models have a 5Hz GPS. 

► This means that the UHD2 models should have a slightly faster acquisition speed and better reception in areas with weak GPS signals.


Sharing Sonar over WiFi: This, I think is the biggest upgrade.

  • Wireless Data Sharing – If you have another compatible ECHOMAP UHD2 chartplotter on your boat, you can wirelessly share information such as sonar, waypoints, and routes with them.
  • Network Cable Data Sharing – If you have additional ECHOMAP UHD or ECHOMAP Ultra devices on your boat, the 7” and 9” models can share information — such as sonar, user data and charts.


NOTE: As of now ECHOMAP UHD or ECHOMAP Ultra can’t share data with the UHD2 models


Additional Connectivity: 

  • UHD2 models have Bluetooth, ANT, and Garmin Wi-Fi.
  • UHD models only have Garmin Wi-Fi. 
  • Both are Active Captain capable


Built-in Mapping: 

  • UHD2 models come with preloaded the new Garmin Navionics+ (coastal): Select Models.
  • UHD models come with preloaded BlueChart g3 charts. Select Models.

► Here’s a quick comparison showing the different Chart and Mapping features between BlueChart G3 and Garmin Navionics+.


Comparison - Garmin BlueChart G3 vs Garmin Navionics+ - Table InfoGraphic


Software Updates: 

  • The UHD2 models can be updated with the latest software.
  • UHD models cannot.


► This means that the UHD2 models will have access to new features and bug fixes along with mapping and navigation upgrades in the future.


Mounting Bracket:

  • The UHD2 models also have newly redesigned quick-release brackets to make it simple to remove the unit from the boat at the end of the day.



Common Features:


  • They both come in 6”,7” and 9” options.
  • Sunlight-readable touchscreen display.
  • Built-in GPS receiver.
  • Preloaded Charts – depending on the model, but not the same charts.
  • Sonar – Ultra High-Definition scanning sonar (ClearVü and SideVü) – The sonar output appears to be the same @ 500 watts across both the UHD and the UHD2.

► Note: The 6” UHD unit only offers ClearVü (down) no side SideVü option.


  • Vivid scanning sonar color palettes
  • Support for Panoptix all-seeing sonar, including Panoptix LiveScope sonar.
  • Sonar Mapping and user data sharing capabilities with other ECHOMAP Plus, ECHOMAP UHD and ECHOMAP Ultra units.

► See the specifics of data sharing below.


  • Built-in Garmin Wi-Fi.
  • Compatible with Garmin Navionics+ and Navionics Vision+ charts.
  • The rear connections are the same.





► Notice how the mounting clip is a little different.




My Final Thoughts:


The Garmin Echomap UHD and UHD2 are both great fishfinder/chartplotter combos, but the UHD2 does have some pretty cool updated features.

The Garmin Navionics+ charts, higher screen resolution on the 9” version and the ability to share fishfinder data and other data via WiFi make it a great choice if you want to upgrade.

Not having to run network cables between additional UHD2 units during installation is a big plus.


The Echomap UHD is still a great unit, and it’s a good option if you’re on a budget or don’t need the latest features.

Ultimately, I think your best choice will depend on your individual needs and budget. But I do like the UHD2 Wi-Fi upgrade.


Also see – How to Choose the Best Garmin Fishfinder ►



Rodney L.

Rodney L.

NavGuy | Lead Writer

Charter Boat Captain, Avid Cruiser, Boat Builder & Marine Electronics Pro:

With over a decade of experience in the marine electronics industry and over 30 years of cruising the Bahamas on boats of all kinds, Rodney is well-positioned to help boaters of all levels sift through the many choices we have today in marine electronics.

You Might Also Like

Garmin GPSMAP 8600xsv vs 7600xsv

Garmin GPSMAP 8600xsv vs 7600xsv

Key Differences Check Prices | Reviews Series Comparison InfoGraphic Garmin 7616xsv vs 8616xsv Garmin 7612xsv vs 8612xsv Garmin 7610xsv vs 8610xsv More Articles   What's the difference between the Garmin 8600xsv and the 7600xsv Series?   The key difference...

Garmin ECHOMAP Ultra 126sv vs Ultra 106sv

Garmin ECHOMAP Ultra 126sv vs Ultra 106sv

Key Differences Check Prices How are they the same Comparison Table More Articles Our Reviews - Ultra 126sv | Ultra 103sv   What's the difference between a Garmin ECHOMAP Ultra 126sv and a Garmin Ultra 106sv? Physical Dimensions,  Screen Size, Weight & of...