Original Link: https://www.anandtech.com/show/9082/the-chromebook-pixel-2015-review



Google's Chrome OS has always been similar to Microsoft Windows in how one company provides the operating system for many different manufacturers to use on their own devices. But two years ago, Google decided to create a Chromebook which was solely Google branded and designed. Although Chromebooks typically aim at the inexpensive part of the laptop market, this Google branded Chromebook had specifications that put it in line with high end Ultrabooks, and an equally high price tag. It was the original Chromebook Pixel, and its name referred to its 2560x1700 IPS display. At 239ppi it had the highest pixel density of any laptop in the world when it was released, and the rest of its specs were also impressive. In our original review of it, we concluded that it was an impressive laptop, but that its starting price of $1299 was quite a barrier to entry. In addition Chrome OS was more limited at that time than it is today.

That brings us to the new Chromebook Pixel which was released just last week. At first glance, you would be hard pressed to tell the difference between this new model and the old one. It has a similar high resolution display, and the same aluminum body with flat edges. But a look at the sides of the chassis will reveal a pair of highly versatile USB Type-C ports, and a figurative look inside will show one of Intel's new Broadwell CPUs which enables high performance and stellar battery life. Before we dive into the new Chromebook Pixel, I've compared it with the original Pixel from 2013 in the chart below.

  Chromebook Pixel (2013) Chromebook Pixel (2015) Chromebook Pixel LS
Dimensions 11.72 x 8.84 x 0.64" (297.7 x 224.5 x 16.3mm)
Mass 3.35 lbs (1.52kg)
CPU Core i5-3337U (2 cores + HT) Core i5-5200U (2 cores + HT) Core i7-5500U (2 cores + HT)
L3 Cache 3MB 3MB 4MB
Base CPU Clock 1.8GHz 2.2GHz 2.4GHz
Max CPU Turbo 2.7GHz 2.7GHz 3.0GHz
GPU Intel HD 4000 Intel HD 5500 Intel HD 5500
System Memory 4GB DDR3L-1600 8GB LPDDR3-1600 16GB LPDDR3-1600
Storage 32GB SSD 32GB SSD 64GB SSD
Display 12.85" 2560x1700 IPS LCD
Battery 59 Wh
Ports 2 x USB 2.0, Mini DisplayPort, 3.5mm audio 2 x USB Type-C, 2 x USB 3.0, 3.5mm audio, SD card
Connectivity 2x2 802.11a/b/g/n + BT 3.0 2x2 802.11a/b/g/n/ac + BT 4.0
Launch Price $1299 $999 $1299

Some investigation into the Pixel's hardware reveals a few more details about it. The version sent by Google was the normal Intel i5 model, and although I don't expect the suppliers would be different for parts of the "Ludicrous Speed" model, it's still possible. In addition, parts like the RAM and SSD could be sourced from multiple vendors, although this is again unlikely due to the relatively small number of units that will be manufactured.

The original Pixel used a Sandisk iSSD, while this new Pixel uses an SSD made by Kingston. It's likely that it's still soldered to the motherboard which makes replacing or upgrading it impossible. Given that the Pixel can only be disassembled using suction cups and a great deal of force I'm not able to actually look inside to check. In addition, the i5 model of the Pixel uses two 4GB LPDDR3 modules which are manufactured by Samsung.

The chassis of the new Pixel is just as impressive as the previous model. The aluminum construction feels incredibly solid, and is heavy but not excessively so. When you first look at it, you'll notice that the device itself is slightly more square than other laptops, as a result of its 3:2 display. This square profile also extends to the sides and edges of the Pixel, which are as flat as can be. The top of the device also retains the LED light bar from the original model, which lights up in green, yellow, red, and blue colors and has a very Googley feel to it. Tapping twice on the top of the laptop will cause some of the LEDs on the light bar to turn on, and the color and number of LEDs gives you an approximation of how much battery life you have left. All these little details result in a really unique design, and its been clear since the original Pixel that Google wanted to create their own device instead of just carbon copying another laptop

Upon opening the Pixel, you'll be greeted by a uniquely shaped LCD display surrounded by a fairly thin bezel. Beneath it are the keyboard and touchpad, both of which felt great to use. The keyboard had a comfortable amount of key travel, very little movement back and forth, and large well spaced key caps that made typing a breeze. The keyboard also acts as the vent for the Pixel's fans, and the speakers are hidden underneath. Google uses sensors to detect when your hands are over the keys, and so the keyboard backlight is only on when you're typing. The touchpad is covered by a smooth piece of glass, and it was responsive and accurate in use, which is something that can't be said about many other laptops regardless of price. One small complaint I have is that Chrome OS doesn't seem to support pinch to zoom on the touchpad. If it does, I certainly couldn't find the option anywhere I looked.

That brings us back to the display, which is a 3:2 touch enabled IPS LCD. Chrome OS seemed reasonably responsive using the touchscreen, although much like on Android multi-touch gestures like pinch to zoom didn't track well to how your fingers were actually moving inward and outward. I don't think that the touchscreen is really a necessary input method on a laptop, and in my experience it's not comfortable in the slightest to hold your arm up and poke at your laptop display, but the option is there for users who desire it. Google has also improved the display hinge to reduce the bounce back of the display when touching it.

The sides of the pixel have all of the ports for expansion. Google clearly believes that users enjoy having ports on their laptops, and so each side of the Pixel has a USB 3.0 Type-C port, along with two USB 3.0 Type-A ports and an audio jack on the left side, and an SD card slot on the right side. Google provides several adapters that can be used to transform the Type-C ports to other existing interfaces, including HDMI, DisplayPort, and both female and male USB Type-A.

The build quality of the Chromebook Pixel certainly inspires a great deal of confidence in the rest of the machine, so lets continue our examination of the new Pixel with a look at the improvements Google has made to the display.



Display

When the original Chromebook Pixel launched two years ago, its big selling point and the source of its name was its 239ppi 2560x1700 display. At that time, the only other laptops on the market with HiDPI displays were Apple's Retina MacBook Pros. Chromebooks have typically aimed for the low-cost segment of the laptop market, and so it was quite a surprise that one of the earliest HiDPI laptops was a Chromebook. Although the Pixel had the highest pixel density of any laptop display at the time, it fell somewhat short when it came to color reproduction due to its narrow color gamut and lack of calibration. With the new Chromebook Pixel, Google has advertised coverage of the sRGB color gamut, along with a maximum brightness of 400nits.

To see whether or not Google has hit their mark, we turn to our standard display testing workflow. As usual, all measurements are performed using SpectraCal's CalMAN 5 software along with X-Rite's i1Pro 2 spectrophotometer, with the exception of black level measurements which are performed with an i1Display Pro colorimeter.

Display Brightness - White Level

Display Brightness - Black Level

Display Contrast Ratio

CalMAN - White Point Average

Due to the evolution of our display workflow as time has gone on, I don't have results to compare the new Pixel to the original for certain categories. The result for maximum brightness is certainly in line with Google's advertised 400nit brightness, while the black levels and contrast ratio are what you would expect of IPS panels. The white point is noticeably more blue than the ideal D6504 target, which contrasts with the original Pixel which was very slightly too red. The blue/green tint in white and shades of grey is also more obvious than most other devices with similar average white points, which I elaborate on further below.

CalMAN - Grayscale Average dE 2000

CalMAN - Gretag Macbeth Average dE 2000

CalMAN - Saturations Average dE 2000

CalMAN - Gamut Average dE 2000

The new Pixel improves significantly upon the original in the gamut and saturation tests. It has a much wider gamut than the original, although it misses in magenta and yellow. Saturation improvements follow the improved gamut, as colors of 80% and 100% saturation no longer look identical. Despite these improvements, there hasn't been much progress on greyscale and color mixture accuracy. As noted earlier, the Pixel has a fairly obvious green/blue tint to the lighter shades of grey and white. As you can see in the gallery below, this is due to the reduction in red and increase in blue components of luminance as the shades of grey move from black to white.

I don't expect that many Chromebook users will be doing heavy photo and video editing that requires a perfectly calibrated display. Many $999 laptops ship with displays that are much worse than the one on the new Pixel, and I think that most users will be very happy with the Pixel's display. It's just a shame that Google doesn't seem to have put the same amount of care into display calibration with the Pixel as they have with the Nexus 9 and other Google branded devices, despite it having the highest price point of the devices they sell.



CPU Performance

Chrome OS is extremely lightweight, which makes sense for an operating system that has to run on processors that range from Intel's Core i7 at the high end, to Intel Atom and ARM processors at the low end. Most devices running Chrome OS are closer to that lower end, and that coupled with the web application nature of Chrome OS doesn't make it a large target for benchmark developers. The situation is arguably even worse than mobile benchmarking since the only benchmarks a device can be tested in are web benchmarks, but we have to work with what we have. The new Chromebook Pixel is powered by Intel's Core i5-5200U processor, which is one of Intel's new Broadwell-U parts.

SunSpider 1.0.2 (Stock Browser)

Mozilla Kraken (Stock Browser)

Google Octane v1 (Stock Browser)

WebXPRT (Stock Browser)

Additional Performance Results
  Acer C720 Acer CB13 Toshiba Chromebook 2 Chromebook Pixel (2015)
CrXPRT 96 55 61 161
Spacerocks (WebGL - FPS) 18 30 11 45

The CPU performance of the original Pixel could be described as completely overkill for running Chrome OS, and the same is true for this year's iteration. The Pixel gives you whats is undoubtedly the smoothest and fastest Google Chrome experience available. While I find the performance of an Intel i5 to be unnecessary to do something as simple as run Chrome and web apps, it definitely comes in handy if you're running some other version of Linux overtop of Chrome OS.

WiFi Performance

The 2013 Chromebook Pixel had dual spatial stream 802.11n WiFi and Bluetooth 3.0. In early 2013, this was fairly common among laptops, although 802.11ac adoption on high end laptops began not long after. The 2015 Chromebook Pixel uses Intel's Intel 7260 WiFi + BT 4.0 module, with 2x2 802.11ac support. This brings the max theoretical WiFi speed up to 866Mbps, a substantial improvement over the 300Mbps max on the 2013 model. Real world performance will almost always be lower than theoretical maximums, and to test WiFi performance I've used iPerf to get an idea of what the maximum throughput is on the Pixel.

WiFi Performance - UDP

In most of our tests I've compared the Pixel to other Chromebooks, tablets, and smartphones. This is mostly due to the previously mentioned benchmarking limitations on Chrome OS. To keep consistent with this, and to avoid making unfair comparisons to laptops which aren't tested using iPerf, I've just run the Pixel through our smartphone/tablet WiFi benchmark. This still gives an idea of how fast the Pixel is, without comparing it to other laptops that were not tested in the exact same manner.



Battery Life

One area where Google claims to have made large improvements over the original Pixel is battery life. The 2013 version of the Pixel would typically manage six or seven hours of battery life, which was decent but not outstanding at the time. Given that the Pixel did not run much more than a web browser, it was actually somewhat disappointing to see it falling behind other laptops like the 13" MacBook Pro with Retina display which was substantially more powerful and capable. Google claims that the new Chromebook Pixel will achieve up to twelve hours of battery life, which is quite a lofty goal considering it is around twice the battery life of the original. Given that the new Pixel has the same 59 Wh battery as its predecessor, all of the battery life improvements have to come from reduced component power usage and software optimizations.

The two main areas where power usage has been reduced are the CPU and the display. The CPU is one of Intel's new Broadwell-U processors, built on their 14nm manufacturing process. While it is faster than the Ivy Bridge Core i5 used in the original Pixel, it has significantly reduced power usage due to architectural improvements and the move from a 22nm to a 14nm fabrication process. The display is similar to the original, but Google is now using Content Adaptive Backlight Control (CABC) to manage backlight brightness based on the display's Average Picture Level (APL), as well as Panel Self Refresh (PSR). It should be noted that although PSR is a display feature, it's actually a method of reducing CPU/GPU and display bus power usage, not LCD panel power usage.

To see if Google achieved their goal of a twelve hour battery life, I have run the Pixel through our standard web browsing test as well as our H.264 video playback test.

Web Browsing Battery Life (WiFi)Video Playback Battery Life H.264

In our WiFi web browsing test, the Pixel is only two minutes short of Google's up to twelve hours rating, and with that battery life it sits well above all the other tablets and Chromebooks. In our video playback test it still performs very well with 9.77 hours, but it doesn't end up lasting quite as long as some of the most recent tablets. Regardless, the battery life in both scenarios is an absolutely massive improvement over the original Pixel, with almost two times the battery life during web browsing and over three times the battery life when playing back videos.

Charge Time

As mentioned earlier, the new Chromebook Pixel uses USB Type-C for charging. Since the Pixel has a Type-C port on each side, you can charge it from both the left and the right. While this doesn't sound like a big deal, it can be the difference between charging and not charging in situations where you're far from an outlet. It is also just a great connector in general, and the fact that it is just USB means that you can use a USB Type-A to Type-C cable to charge off of any existing USB port, with the caveat that it's going to charge slower. Google includes a 60W USB Type-C charger with the Pixel, and offers a Type-A to Type-C cable for $12.99.

Battery Charge Time

The Pixel does exceptionally well in our charge time test, reaching a full charge nearly an hour quicker than the XPS 13 which was previously the quickest to charge. The quick charging combined with the extremely long battery life should ensure that Pixel users are never stuck tethered to a power outlet.



Software

To tell the truth, I hadn't had much experience with Chrome OS before using the Chromebook Pixel. Years ago I installed Chromium OS to see what it was like, but I quickly wrote it off as far too limited to perform the tasks that I do on a daily basis. Since then, web applications have improved immensely, and Chrome OS itself has had new applications added and changes made to the interface to make it feel more like a typical operating system. But at its heart, it's still just Chrome and web apps, and so it was interesting to see what could be done within those bounds.

When you first get your Chromebook you'll be asked to log into your Google account. From that point, you're sent right to what could be called the home screen for Chrome OS. At the bottom you have a shortcut to Chrome, along with shortcuts to other Google products like Docs and Gmail which are actually just links to the website for each respective product. However, not all Chrome OS applications run within Chrome. There's a Calculator application which greatly resembles the Android Lollipop calculator, and a Files application to view your removable storage and downloads in addition to showing your files stored in Google Drive.

At this point you're basically ready to go. There aren't many settings to change or any applications to configure once you've signed in with your Google account. In fact, if you're already invested in Google's ecosystem you'll be able to start editing your Google Docs files and access your Google Drive immediately. I do use Google drive, but I use Microsoft Office instead of Google Docs, Sheets, and Slides for editing documents which could pose a problem. Luckily, Office has moved to the cloud and so users who don't edit their documents using Google's software aren't left out in the cold.

Unfortunately, many cloud counterparts to desktop software are missing important features. In the case of Office, you lose many formatting tools, including the ability to insert equations which is a tool I use frequently. Charts and text boxes are also removed in the cloud version of Word. I understand the need to simplify these applications when they're being run in a web browser, but it doesn't change the fact that many tools users expect to be there are missing.

How Google's office application handle files can also be somewhat problematic. I'm sure most people have been sent a file in one of Microsoft's Office formats at some point in their lives. Google claims somewhere around 90% feature compatibility with Microsoft Office files. On one hand, this is pretty impressive for software that runs in a web browser. But on the other hand, when you only have 90% feature compatibility, you're basically completely incompatible with every file that uses any feature from that last ten percent. Importing a PowerPoint file to Google Slides will cause objects like charts to just be completely erased, and I would hardly consider the use of charts in PowerPoint presentations to be uncommon.

For media playback, the default video and music applications are more than sufficient for most users. Google even has support for the Matroska container which is more than can be said for other operating systems. For playing back less common file types, or videos with subtitles, the built in players aren't quite up to the task. Luckily, the Android version of VLC is slated to come to Chrome OS in the near future via the App Runtime for Chrome. Google was able to provide me with a debug version to see how well it worked. It definitely needs some polish, but there's still quite some time between now and release, and I don't know how up to date the debug build I'm using is.

Overall, I think that Chrome OS still does a pretty good job of handling files that come from a Windows PC world. There's still work to be done though, and anybody who's considering the Pixel or any other Chromebook should understand what they're getting into.

For users who want to play around with the underlying Linux core of Chrome OS, there's a fully functional shell which is accessible via Chrome after putting the laptop into developer mode. This allows you to access more of the file system, and you can even install versions of Ubuntu or Debian using Crouton. Obviously I can't recommend doing so due to the potential security and stability risks, but the options are available for any users who are interested. The Chrome OS shell already has the ability to connect to another computer via SSH once developer mode is enabled, and it opens up a whole new world of possibilities for the Pixel.

I'm definitely more open to using Chrome OS than I was when the original Pixel launched. I know that many users would be able to do everything they currently do on Windows with a Chromebook. However, those users aren't likely to be the ones who are looking for a $1000 laptop. For me personally, Chrome OS is still too limited, and it will probably always be too limited for me to use as a primary operating system. But it's an interesting idea, and with Google working with developers to get Android applications brought over to Chrome OS there's no telling what the state of Chrome OS will be by the time a Pixel v3 rolls around.



Final Words

Despite its limitations, it's really hard to not like the Chromebook Pixel. Google has clearly put a lot of thought and effort into designing it, and what it does do it does really well. I think the move to USB Type-C is forward thinking, and makes the Pixel very versatile when it comes to connecting to both current and future displays and peripherals. The little details like tapping the top to see the remaining battery capacity, and the ability to charge on either side also help make it a very lovable laptop.

The Pixel's hardware is top notch. The build quality is every bit as good as what you'll get on a MacBook Retina, and both the keyboard and touchpad are comfortable to use. The CPU and RAM are completely overkill for running Chrome OS, but given that the Pixel has absolutely stellar battery life I'm not complaining about the additional hardware power. I think Google could have done more to calibrate the display, but in all honesty I doubt any users who buy the Pixel will be bothered by it, and it is still incredibly sharp.

The only big criticism I can really throw at the Pixel is the fact that its software is limited. But that is the entire point of how Chrome OS has been designed, and I do not know if it really makes sense to complain about something doing exactly what it was intended to do just because you wish it could do more. Chrome OS is definitely not the OS for everyone though, and although you can run other versions of Linux overtop, it's not exactly a real solution to the problem.

The final question is obviously whether or not someone interested in the Pixel should buy one. The answer is more complicated than a yes or a no. For anyone who wants to develop with Chrome OS in mind, the Pixel is the laptop to buy if it is within their budget. Other Chromebooks are definitely more affordable, but the Pixel is just so much nicer than any other Chromebook. I think that the Pixel can also be an appealing device for any user who can work within the limitations of Chrome OS, although I heavily stress that buyers make sure they know exactly what those limitations are before they spend $1000 on a laptop.

Google clearly doesn't intend for the Pixel to be a mass market item. It's quite expensive, it runs Chrome OS, and it's only sold in the US and the UK. There's clearly a small market for people that want a laptop like the Pixel though, and those are the people that Google are targeting. I am not one of them, and I do not know many people who are, but they do exist. In the end I find myself wishing that the Pixel could do more, because it's a genuinely nice laptop. I really like the Chromebook Pixel, but I personally just couldn't justify buying it.

Log in

Don't have an account? Sign up now