Google Chromecast (3rd gen) review

Google’s third HD Chromecast is still a good streamer, but its value is slipping

Google’s 2018 Chromecast is essentially just the old Chromecast with a new coat of paint.
Google’s 2018 Chromecast is essentially just the old Chromecast with a new coat of paint.
Google’s 2018 Chromecast is essentially just the old Chromecast with a new coat of paint.


  • Simple, intuitive HD streaming
  • Slick new design
  • Quick and easy setup
  • Google Home app keeps improving


  • No 4K or HDR
  • No magnet

DT Editors' Rating

What do you call a product update that’s so insignificant it’s unworthy of mention at your own hardware event? If you’re Google, you call it the Chromecast 3rd Generation.

Relegated to this year’s “also ran” product category — and dumped unceremoniously into reviewer grab bags at Google’s latest event — the new Chromecast is still an easy and affordable way to stream HD video. Yet, with very little in the way of upgrades, we’re left to ponder why exactly Google updated its Chromecast at all.

Out of the box

Released in 2015, the second-generation Chromecast was the first to ditch the flash-drive look for a puck design. The third generation follows suit, offering a design that’s strikingly similar to both its predecessor and 2017’s 4K HDR-ready Chromecast Ultra. The new device is maybe a sliver thicker, but it feels sleeker thanks to its more modern, matte-plastic shell and monochromatic color scheme (available in “chalk” or “charcoal”). We’ll also give Google very minor props for making the new box slightly easier to open.

Other than a minor makeover, the only noticeable design change is that Google has done away with the magnet at the back, so even if your TV’s backside sports a metal facade, you’ll have to dangle your dongle. (Sorry, we couldn’t help ourselves.) As before, the device comes with a long USB cable and wall adapter for plugging into either your TV or outlet.

Getting going

Unlike virtually all other streamers, Chromecasts don’t have an interface, per se. The closest thing would be Google’s Home app, which is updated fairly regularly and offers features like voice search and integration with other Google Home hardware. The app walks you through setup in minutes; just plug in, follow the directions, and you’ll be streaming in no time.

Couch casting

The best reason to own a Chromecast is intuitive streaming (or “casting”) from virtually any streaming app on your mobile device. That has always been the key selling point, and it remains unchanged for the third generation.

Chromecast 3rd Gen
Left: 2015 Chromecast; Right: New 2018 Chromecast Dan Baker/Digital Trends

Whether you choose an HD Chromecast or the 4K HDR Chromecast Ultra, the ability to stream almost anything to your TV at the tap of a finger is a huge reason Chromecast is popular, perhaps second only to its affordable price. Chromecast also allows you to stream any browsing tab in Chrome, and even mirror your desktop. Even if it’s not your primary streamer, which is increasingly the case for many, it’s nice to have a Chromecast around when you need one.

What’s new?

As we alluded to above, apart from an updated look, there’s very little new to report. A side-by-side comparison reveals a near identical list of features for both the third-generation Chromecast and the 2015 model. Along with the same basic size and weight, both devices include HDMI connection, micro-USB input, Wi-Fi 802.11ac connection (2.4GHz/5GHz), and an optional Ethernet adapter.

Intuitive streaming has always been the key selling point, and that hasn’t changed.

When it comes to streaming, both Chromecasts max out at 1080p HD resolution (i.e., no 4K video or HDR support). The biggest notable difference here is that the latest Chromecast offers 1080p video at 60 frames per second, as opposed to 60fps at a max 720p. Since most streaming TV from Netflix, HBO, and others (the device still can’t support Amazon Prime Video) tops out at 30 frames per second, the improved framerate won’t really matter for a lot of what you watch, and much of the content you’ll find on YouTube at higher frame rates is offered in 4K resolution.

Where the higher framerate could make a very slight difference is for live sports content from streaming services like Sling TV, where the action should theoretically be more fluid for 1080p content when both sides of the streaming pipeline are firing on all cylinders. Newer TVs commonly offer a 60Hz native refresh rate (i.e., 60 cycles per second), meaning 60 frames-per-second video offers a frame to fill each moment on screen to provide cleaner movement with less stuttering. That said, a high volume of live sports content maxes out at 720p anyway, so there’s really very little to crow about here.


As you’d expect, we didn’t notice any difference between our second-generation Chromecast and the new model, even when viewing live sports. Again, that’s mainly because it can be hard to even find 1080p sports content, and moreover, many TV streaming services often have trouble providing a stable enough 1080p stream to take advantage of 60fps without stutters and resolution adjustments.

We also didn’t perceive a noticeable difference between the two devices when viewing 60fps 1080p HD content from YouTube, which was delivered much more reliably.

Unlike the previous update in 2015, we also didn’t clock faster loading times or speedier response in comparison to the new Chromecast’s predecessor. Despite Google’s claim that the latest device is “15 percent faster” thanks to improvements to clock rates, it’s got the same dual-core ARM architecture as its predecessor, and accordingly, our stopwatch told the same story.

Our Take

Google’s new Chromecast is essentially just the old Chromecast with a new coat of paint. The higher frame rate may be enjoyable for some in very specific situations such as live sports in 1080p resolution, but it’s no reason to trade in the older model. While Chromecast remains one of the easiest and most intuitive ways to stream, with three years of streaming history elapsed between models, we expected something (anything) more — especially when the latest tiny streaming devices from both Amazon and Roku offer 4K HDR resolution for not much more cash.

Is there a better alternative?

Yes! As referenced above, there’s a new class of affordable 4K HDR streaming devices in town, including Roku’s new $40 Roku Premiere and the feature-packed $50 Roku Premiere+. For its part, Amazon also now offers a $50 4K HDR streamer in the Fire TV Stick 4K, which also adds Dolby Vision HDR alongside HDR10 for an even more dynamic way to experience HDR’s improved contrast on Dolby Vision-supported TVs.

Of course, if you just love the versatility of casting, there’s also the 4K HDR Chromecast Ultra, which is a heftier upgrade at $70, but, like Amazon’s device, it also adds Dolby Vision HDR.

For more check out our best streaming devices.

How long will it last?

While the third-generation Chromecast should hold up for years to come, the HD-streaming limitation is a real hindrance at this point. Even if you don’t yet own a 4K HDR TV, there’s a good chance you will in the near future, and you may well find yourself wondering why you bought an HD streaming device — even a highly affordable one — in 2018.

Should you buy it?

We wouldn’t. As the replacement for the previous device, the third-generation is now the only HD Chromecast available, but if you already own one, there’s no real reason to upgrade, and if you don’t, there are plenty of more advanced streaming devices for just a few bucks more.

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