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Humminbird Helix 5 Review [DI Vs SI, Which One To Get?]

In our Humminbird Helix 5 review, we will be comparing two of the best rated fish finders from the prestigious manufacturer. So, what should you expect from the Helix 5 SI and DI models? More importantly, which one is better and what makes them so attractive for professional fishermen? Below is a quick comparison between the 2.

Humminbird helix 5 review
  • 800 x 480, 5" 256 color display with backlight
  • Micro SD card slot
  • Depth-Down Imaging: 350ft
  • DualBeam PLUS, CHIRP Down Imaging, CHIRP Side Imaging
  • Side Imaging: 250 ft (455 kHz)
  • Sonar Freq: 50/83/200/455 kHz
  • Depth Sonar: 1,500 ft (standard transducer), 2,500 ft (optional 50 kHz)
  • Transducer: XNT 9 SI 180 T
  • 800 x 480, 5" 256 color display with backlight
  • Micro SD card slot
  • Depth-Down Imaging: 350ft
  • DualBeam PLUS, CHIRP Down Imaging
  • Sonar Freq: 50/83/200/455/800 kHz
  • Depth Sonar: 600 ft (standard transducer), 2,500 ft (optional 50 kHz)
  • Transducer: XNT 9 DI T

Introducing the Humminbird Helix 5 [Which One Should I buy?]

At first glance, it seems like the differences between the SI and DI models from the Humminbird Helix 5 are kinda irrelevant. 

However, after using it ourselves, we find that their differences are quite important to be frank. The SI model is basically an upgrade of the DI model, making it more powerful than the latter.  It can scan deeper, faster, has a more advanced transducer that results in better image quality and most importantly, has the side imaging feature that is very important to anglers as it can scan the water thoroughly, left and right of the boat and as such, cover a bigger area. 

1. Humminbird Helix 5 SI GPS G2


According to most of the review, the three types of sonar available in the SI version will work wonders in the long run. You can count on Down Imaging, Side Imaging and DualBeam Plus. No matter which one you use, they are all supported by the powerful transducer.

The DualBeam Plus option is a classic 2D solution covering 20 degrees at 200kHz and 60 degrees at 83kHz. The Side Imaging option runs at 455kHz and covers 480 feet. As for the Down Imaging sonar, it works like the 2D one, yet the imaging provided is similar to the one given by Side Imaging. Here is a breakdown on the differences between down and side imaging.


The GPS is highly accurate. It is a solid 5Hz internal unit. It will keep an eye on your position every 20 milliseconds. In other words, your position is calculated and displayed five times per second. It gets most details from top satellites – MSAS, EGNOS and WAAS, as long as they are available.

Whether you want to know more about your location or a certain way point, the GPS will provide accurate details. If needed, it will save 50 trails, 45 routes and 2,500 way points. Obviously, it will calculate your moving speed as well.


When it comes to the total depth, most experts recommend using the DualBeam Plus sonar. It is easy to tell why – its scanning goes down to 1,500 feet, which is impressive even for professional fishermen. Its accuracy is exquisite and imaging will clearly underline fish.

Choosing the right option depends on where you fish. For instance, off shore waters are quite deep, while lakes and rivers can do with down and side imaging. It is also worth noting that the transducer is XNT 9 SI 180 and features a temperature sensor and 20 feet of cable.


Based on a recent review, this model is not as perfect as newer generations, such as Helix 7. Despite being an older model, reading this fish finder is still easy and it actually tops most of its modern competition.

However, unlike newer models from Humminbird, it only comes with classic UniMap charts. They do not feature contour lines or specific details, such as the tide. UniMap keeps updating its charts on a regular basis though.

The good news is you can grab charts from other providers, such as Navionics Gold, LakeMaster or HotMaps. Radar and AIS support are not available.


Controls are available on a 5 inch display with a maximum resolution of 800x480. Images are clear and sharp, while the LED backlight helps at night. The IPX7 waterproof capabilities allow using it in the rain.

A Gimbal mount comes with the package, yet you can opt for another kit. There are no touchscreen controls, but a keypad – excellent for when your hands are wet.

Ethernet connectivity is not available, but you can still run upgrades and transfer data through NMEA 0183 support and a microSD card reader. Just browse the Humminbird Helix 5 manual for instructions.


Pretty much every Humminbird Helix 5 review will mention the additional attractive features that make this fish finder so special. Many of them are related to the sonar. Selective Fish ID and Bottom Lock are just some of the most popular one. The Circular Flasher option is just as handy for ice fishing.

Unless you want to constantly keep an eye on the display, the Fish Alarm function will start ringing whenever a decent amount of fish is located in the area.

The Pros and Cons


  • Multiple types of sonar to choose from based on the water type
  • Transducer is powerful and Chirp capable, but it also features a temperature sensor
  • Plenty of small bells and whistles to make one's life easier
  • Impressive depth ability going to 1,500 feet
  • Easy to install


  • More costly than the DI

2. Humminbird Helix 5 DI GPS G2


Humminbird Helix 5 DI is likely to impress with its GPS features. Once on the water, it can be powered from any 10V or 20V DC source. The display has backlighting for night fishing or fishing in rainy conditions, but it also provides the water temperature and speed.

UniMap cartography is preinstalled by default and allows guidance on most lakes and river in the USA, as well as the coastline. It can store 45 routes and 2,500 way points. For extra storage or to capture images, you will have to insert a microSD card.


The sonar displays what happens underwater up to 350 feet. You can see the fish, your bait and vegetation or terrain shapes. You also get the depth of such structures for more accuracy. You can choose a wide 75 degree 455kHz option or a sharp and narrow 45 degree 800kHz setting.

The DualBeam Plus sonar allows going down to 600 feet. Use the wide beam when interested in scanning a wide surface, while the narrow one is great for more accuracy.


The display leaves no room for mistakes. Every Humminbird Helix 5 review will agree. Apart from the backlight feature, you also have a 256 color unit. It is compact and user friendly.

One of the most attractive features is the split screen view, as it allows multitasking. For example, you can use one side to scan the underwater and another one to keep an eye on your way points through the GPS. The menu is straightforward, even if you have never used a fish finder before.


Accuracy is flawless regardless of what you are doing. It makes no difference if you fish in the middle of nowhere or you move into a fast speed boat. Information updates more times per second and maintains its accuracy regardless of your speed.

Everything is simple to interpret given the details on the screen.


Certain small features can make your life easier. For instance, you can keep an eye on both DualBeam and DI sonar images at the same time when using the split screen. Moreover, you have a Freeze Frame setting and Snap Shot options.

The Selective Fish ID feature is not to be overlooked either, as it allows you to decide on the game.


The microSD slot is ideal for connectivity, as there is no Internet connection available. However, in order to take advantage of the updates, Humminbird encourages its users to register the device with its serial number once they receive their orders.

Software upgrades are usually released once or twice every year. They are available on the official website.

The Pros and Cons


  • Highly accurate GPS based on more satellites
  • Easy to use control display, even in bad weather conditions
  • Plenty of small bells and whistles
  • Split screen view for multitasking and more data at a glance


  • No side imaging feature
  • Lower depth sonar compared to the SI
  • Lower quality transducer resulting in lower image quality


Humminbird Helix 5 SI GPS G2

Humminbird Helix 5 DI GPS G2

Our Rating
Our Rating

It was almost impossible to find a negative Humminbird Helix 5 review. Testing both products ourselves and rating them, we find that the Humminbird Helix 5 SI is more powerful and advanced than its alternative. Sure, it might cost more but with the ability to scan deeper and faster, almost twice compared to the DI model, it is definitely well worth the money.

Adam Parsons

Hi! I'm Adam Parsons - a fishing enthusiast. I have been fishing for more than 15 years now and I still strongly remember that the toughest part for me was during the learning process. Most guides I read during that time was too technical to understand. Therefore, I make sure that everything I post on dream-guides regarding fishing is written well and easy to understand even if you are a newbie.

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