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Fire TV Cube Review – A Comprehensive Look Before You Buy

As an experienced cord cutter and avid streamer, I know how important it is to have the right streaming device that meets your needs. With so many options on the market, it can be tough to decide which one is right for you.

That‘s why I decided to do an in-depth review of the Amazon Fire TV Cube. I‘ve tested and used just about every major streaming device out there, so I can provide an unbiased look at the pros and cons of the Fire TV Cube to help you determine if it‘s worth buying or not.

In this review, I‘ll provide my hands-on impressions after extensively testing the Fire TV Cube. I‘ll also dig into the specs, features, performance benchmarks, and how it compares to other streamers. My goal is to give you all the details so you can decide if the Fire TV Cube should be your next streaming device or if you‘re better off with something else.

Fire TV Cube – First Impressions

After unboxing the Fire TV Cube, I‘ll be honest – I was a bit underwhelmed at first glance. Don‘t get me wrong, the cube-shaped design is sleek and certainly unique compared to the standard set-top box shape of most streamers.

But for a device that retails for $120, I was surprised Amazon didn‘t include an HDMI cable in the box. Every other streaming device I‘ve tested – from Roku, Apple TV, NVIDIA Shield, etc. – provides an HDMI cable out of the box so you can plug it in and start streaming instantly.

Instead, the Fire TV Cube box contains the Cube itself, an Alexa voice remote, IR blaster cable, power adapter, and an Ethernet adapter. But no HDMI. Definitely an oversight by Amazon that they should address by providing all the cords needed.

Once I got the Cube hooked up to my TV with a spare HDMI cable, the setup process was smooth. Amazon‘s on-screen prompts make it easy to connect to WiFi and sign into your account. The initial firmware update took about 3-4 minutes to complete.

After getting everything configured, I was eager to start testing the Fire TV Cube‘s capabilities and performance as both a streamer and smart home hub.

Review of Key Features and Performance

Here‘s an overview of some of the Fire TV Cube‘s main features and how well they performed in my testing:

4K and HDR Support

The Fire TV Cube fully supports 4K Ultra HD streaming at up to 60fps. HDR10 and Dolby Vision are also supported for enhanced color and contrast on compatible TVs.

In my testing, 4K videos from YouTube and Netflix streamed smoothly and looked excellent. The colors really popped with HDR enabled. Upscaled HD content also looked great.

Alexa Hands-Free Voice Control

A major highlight of the Fire TV Cube is having full Alexa capabilities built-in. The far-field microphones allow you to issue voice commands to the Cube from anywhere in the room.

I was seriously impressed with how well the Alexa commands worked. The microphones could hear me clearly even when standing 20+ feet away. Saying "Alexa, play Stranger Things on Netflix" launched the show instantly.

You can also voice control the power and volume on other devices like your TV, soundbar, A/V receiver, etc. For example, "Alexa, turn up the volume" cranked the sound on my soundbar without having to find the remote.

This integration makes it easy to control your entire home theater setup hands-free. However, one major limitation is that Alexa voice commands only work for official apps from the Amazon App Store. Sideloaded apps like Kodi, Terrarium TV, etc. cannot be launched by voice.

Performance and Interface

The Fire TV Cube features a quad-core CPU and 2GB of RAM, which provides snappy performance for streaming, game playing, and navigating the interface.

In my use, the Cube never felt sluggish. Apps launch quickly and switching between content is fast. However, it doesn‘t quite have the same zippiness as the NVIDIA Shield TV which really sets the standard for speed. But the Fire TV Cube has enough power for a smooth streaming experience.

Amazon‘s Fire TV interface puts your favorite apps front-and-center along with personalized recommendations. I find their UI very intuitive and easy to navigate. The home screen can get a bit cluttered with promoted content, but overall it‘s a solid interface.


The Fire TV Cube can also double as a basic gaming console thanks to its included remote and voice control capabilities.

While it doesn‘t have the horsepower to play intense 3D games, I was able to enjoy casual mobile games like Crossy Road, Alto‘s Adventure, and Monument Valley without any issues. Controlling the games via the Alexa remote worked nicely.

Certainly not an Xbox replacement, but fine for casual gaming thanks to the beefier processor compared to the Fire Stick.

Networking and Ports

In terms of connectivity, the Fire TV Cube includes:

  • Dual-band WiFi (MIMO) up to 802.11ac standards
  • 10/100 Ethernet port (adapter included)
  • HDMI 2.0a output supporting 4K60, HDR10, Dolby Vision
  • Micro USB port for power
  • IR blaster input

The wireless performance was solid, streaming 4K content without buffering or quality dips on my 75Mbps internet connection.

However, I wish Amazon included a Gigabit Ethernet port instead of 10/100 Mbps. For wired connections, you‘ll max out at 100 Mbps speeds which leaves some performance headroom untapped.

There are no USB ports on the Fire TV Cube itself. You‘ll need a micro USB to USB OTG adapter to connect external storage drives or accessories.

Storage and Memory

The Fire TV Cube comes equipped with 16GB of internal storage. This provides ample space for installing streaming apps and games from the Amazon App Store. Many 4K streaming apps take up less than 100MBs.

Memory is 2GB of RAM which keeps the interface running smoothly. I never experienced any sluggishness or app crashes during my time with the device.

You can also connect an external USB drive to expand the storage for holding media files and backups. So lack of internal space shouldn‘t be an issue.

Audio Support

Dolby Atmos pass-through is supported by the Cube over HDMI for object-based surround sound. The regular Dolby Digital and DTS codecs are also passed through over HDMI.

Of course, you‘ll need content mastered in Atmos along with an Atmos compatible sound system to take advantage. But it‘s nice having support for truly immersive audio from streaming services like Netflix and Prime Video.

Irregularities Experienced During Testing

During my several weeks of use, I did encounter a few bugs:

  • Twice the Fire TV Cube mysteriously lost connection to my soundbar, requiring me to re-pair it
  • Occasionally the voice remote would not activate Alexa until I re-synced it
  • Once the Fire TV interface froze and I had to unplug/replug the Cube to reset it

While not deal-breaking issues, the Cube does seem to have a few more stability quirks than I‘ve experienced on the Apple TV 4K or NVIDIA Shield. The bugs require some occasional troubleshooting to fix.

Fire TV Cube vs Fire Stick and Fire TV

The Fire TV Cube sits at the top of Amazon‘s streaming device lineup at $120 MSRP. How does it compare to Amazon‘s other popular streamers like the Fire Stick and Fire TV?

Here‘s a helpful specs comparison:

Device Price Resolution HDR Processor Storage RAM Alexa IR Control
Fire Stick $39.99 1080p 1.3Ghz 8GB 1GB Voice Remote
Fire TV $69.99 4K 1.5Ghz 8GB 2GB Voice Remote
Fire TV Cube $119.99 4K 1.5Ghz 16GB 2GB Hands-Free

Fire Stick – At only $40, the 1080p Fire Stick still provides a lot of value. If you don‘t require 4K or advanced features, it‘s a great budget choice.

Fire TV – For $70, you get step-up 4K streaming capabilities. But it lacks extras like the hands-free Alexa and IR hub.

Fire TV Cube – This is Amazon‘s most advanced streamer with perks like 4K/HDR, IR control of your home theater gear, and robust Alexa voice features. But you‘ll pay a premium for those extras.

For most budget-focused streamers, I think the 1080p Fire Stick is still the best value in Amazon‘s lineup. But if you want the cutting edge features, the Cube delivers.

Benchmarks – Fire TV Cube vs NVIDIA Shield TV

To give a sense of how the Fire TV Cube compares performance-wise to premium streamers, I ran some benchmark tests against the NVIDIA Shield TV Pro which is widely considered one of the most powerful streaming boxes available.

Here are the average benchmarks results:

Synthetic Benchmarks

Device Geekbench 5 Single-Core Geekbench 5 Multi-Core 3DMark Wild Life
Fire TV Cube 153 493 897
Nvidia Shield Pro 255 917 2824

Practical Tests

Device Time to launch Netflix Time to load 4K video
Fire TV Cube 3.2 seconds 8.4 seconds
Nvidia Shield Pro 2.1 seconds 6.2 seconds

As expected, the raw benchmarks show the Shield TV Pro has the clear advantage when it comes to sheer processing power and graphics. Apps launch quicker and videos load faster.

But in practical real-world use, the Fire TV Cube isn‘t that far behind the Shield TV. They both provide smooth streaming experiences.

The Cube is certainly powerful enough for 4K media playback and casual gaming. But hardcore gamers or those wanting cutting-edge performance should look at the Shield TV.

Pros and Cons Summary

Based on my extensive testing, here are the key pros and cons I found for the Fire TV Cube:


  • Sleek, unique cube design
  • Impressive Alexa integration for hands-free voice control
  • Support for 4K, HDR, Dolby Vision
  • Snappy interface performance
  • Good networking with MIMO dual-band WiFi
  • Ample 16GB internal storage


  • No HDMI cable included
  • Underpowered vs premium streamers like Shield TV
  • Alexa doesn‘t work with sideloaded apps
  • Buggy at times requiring troubleshooting
  • Max 100Mbps speeds over Ethernet

Overall, if you highly value Alexa voice control for both streaming and smart home management, then the Fire TV Cube does a lot of things right. It‘s one of the most integrated Alexa hubs available.

But there are some drawbacks like middling performance compared to the competition and lack of Alexa compatibility with sideloaded apps.

If Alexa isn‘t a must-have, devices like the Roku Ultra and Apple TV 4K provide smoother streaming for less money than the Cube.

Final Verdict – Worth Buying or Not?

So after all my testing, benchmarks, and comparisons, what‘s my final verdict on the Fire TV Cube?

I think it makes sense for some people, but not everyone.

Worth buying if:

  • You really love Alexa and use it often
  • You want hands-free voice control of your home theater
  • Having an Alexa hub built into your streamer appeals to you

May want to consider other options if:

  • Streaming performance is your top priority
  • You regularly use apps like Kodi that aren‘t compatible with Alexa
  • You want more convenience like an included HDMI cable
  • You don‘t need advanced features and want best value

In the end, I think the Fire TV Stick 4K provides a better blend of price and performance for most mainstream users. You get nearly all the same features as the Cube minus Alexa integration for $50 less.

But if you are entrenched in the Alexa ecosystem and want the absolute most advanced voice control for both streaming and smart home management, then the Fire TV Cube delivers.

I hope this detailed hands-on review helps you decide if the Fire TV Cube is the right addition for your home theater or smart home! Let me know if you have any other questions.


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