Samsung Galaxy Book S review: Excellent battery, slim design, but just OK keyboard

Samsung Galaxy Book S
Samsung Galaxy Book S (Image credit: Daniel Rubino / Windows Central)

The tale of Windows 10 on ARM is an ever-evolving one with small, but significant advancements. The Samsung Galaxy Book S is the second PC to feature Qualcomm's Snapdragon 8cx ARM processor (the other being Microsoft's Surface Pro X).

Following a more traditional clamshell design, this always-connected 4G LTE computer brings back one of Qualcomm's main advantages over rival Intel: battery longevity in a super-slender design.

I've spent the last few weeks with the Galaxy Book S, and Samsung has done an excellent job on hardware execution. But who should buy the Galaxy Book S, and what are the downsides to this $1,000 ultra-slim Ultrabook? Let's find out.

The Galaxy Book S has remained firmly at its $1,000 RRP since launch, and with Amazon Prime Day fast approaching, any discount on this device may tempt those considering a purchase. While Amazon doesn't currently stock this 8cx-powered Ultrabook, keep an eye out for price cuts to come.

Know before you buy

Samsung Galaxy Book S who this is for

Samsung Galaxy Book S Hero

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

Like the Surface Pro X, the Galaxy Book S has a specific demographic in mind: modern, mobile workers who need a premium, always-connected Windows 10 PC with better-than-average battery life.

Samsung built the Galaxy Book S, much like its previous Galaxy Book2, for executives and enterprise users who jump between meetings, ride trains, and who want to be in their work in an instant. That's not to say, students, journalists, writers, and anyone who focuses on office productivity tasks can't benefit either.

While Windows 10 on ARM has limitations (such as not being able to run any specialty 64-bit "classic" Windows applications, heavy lifting CAD programs, or be adept at gaming or video editing), but it still can do many of the core tasks for modern PC users. Running Microsoft Office, Slack, Microsoft Teams, Skype, web browser, email, maps, and collaborative software is all some people need (see the rise of Chromebooks).

But it comes down to instant-on, ubiquitous 4G LTE connectivity, and all-day battery life that makes this laptop stand out from the rest.

So thin, so premium

Samsung Galaxy Book S design and features

Samsung Galaxy Book S Review Cover

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

The Galaxy Book S is a combination of exquisite, slim, handsome, and a touch of boring. In an age of 2-in-1 convertible laptops, or tablets that have pens that hide in the keyboard, the Galaxy Book S falls into the ho-hum "it's just a laptop" category.

The Galaxy Book S's trick is an old one: it's one of the thinnest and lightest laptops around (rivaled, perhaps, by the Acer Swift 7). That's not to be dismissed. There is an audience for those who want skinny, but also long battery life in a laptop. Up until now, that's been hard to ascertain, especially with an LTE modem.

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CategorySamsung Galaxy Book S
Operating SystemWindows 10 Home
Display13.3 inches
Full HD TFT (16:9)
Touch (no inking)
ProcessorQualcomm Snapdragon 8cx
Expandable StorageMicroSD slot (up to 1TB)
Front Camera720p HD
SecurityWindows Hello with fingerprint sensor
Connectivity802.11 Wi-Fi
Nano SIM
Bluetooth 5.0
Ports2x USB Type-C
AudioStereo (sound by AKG)
Up to 23 hours of video playback)
Dimensions305.2 x 203.2 x 6.2-11.8 mm
Weight2.1lbs (0.96 kg)
ColorsEarthy Gold
Mercury Gray

With an all-metal, anodized aluminum design, tapered edges, and a rounded back, Samsung can undoubtedly design a pleasing laptop. Weighing just 2.1lbs (or 0.96 kg), the Galaxy Book S is exceptionally light. Still, due to that metal chassis, it doesn't feel cheap or hollow compared to similar designs that rely on polycarbonate for materials.

Two colors are available, including Mercury Gray (used for this review) and a pinkish "Earthy Gold."

Samsung Galaxy Book S Review Fingerprint

Source: Daniel Rubino/Windows CentralThe power button doubles as a fingerprint reader. (Image credit: Source: Daniel Rubino/Windows Central)

Two Type-C USB 3.1 Gen 2 (10 Gbps) ports flank the sides of the Galaxy Book S, which is all you get for input/output. Samsung does toss in a Type-C to Type-A converter for those who require the usage of a traditional thumb drive or wired mouse. Unlike the Surface Pro X, there is a 3.5mm headphone jack too.

Underneath the chassis is a simple pullout drawer for the physical SIM (no eSIM, unfortunately) and microSD expansion.

The power button also houses an excellent fingerprint reader. While it doesn't read at the BIOS level (requiring to presses: one to power on, one to log in), it is very accurate and fast with no failures.

Samsung Galaxy Book S Review Sim

Source: Daniel Rubino/Windows CentralThe SIM/microSD slot, Type-C port, & headphone jack. (Image credit: Source: Daniel Rubino/Windows Central)

Either of those Type-C ports can be used for charging with the minuscule wall charger. A small LED light up on the right-hand side to let you know the device's charging status, which is a nice touch.

Excellent viewing

Samsung Galaxy Book S display and camera

Samsung Galaxy Book S Review Type C Port

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

Samsung uses a full HD (1920 x 1080) 13.3-inch TFT 10-point touch display with an aspect of 16x9. Pen and inking are not supported, unfortunately, though it makes little sense on a clamshell anyway.

It's a sharp display with excellent contrast, but there is a visible banding that can be seen in photos (not in real life). Even though it is "only" full HD, this is one of those screens that could pass for a higher resolution as it looks better than it should.

The display can get quite bright, falling just below 380 nits of brightness. It is glossy, but not the worst I've seen.

There are three thin bezels (top and sides) with a larger ~0.75-inch bezel on the bottom, which also has the Samsung logo. Such a design is a consequence of using the 16x9 aspect where a taller 16x10 would have looked better and more modern.

Samsung managed to squeeze in a very tiny 720P web camera on the top bezel too. It's surprisingly good, considering how small it is compared to others, though it leans on reds for colors a bit much. A little blue LED lets you know the camera is active.

There is no physical privacy shutter, nor is Windows Hello facial recognition supported.

Typing is a challenge

Samsung Galaxy Book S keyboard and trackpad

Samsung Galaxy Book S Review Keyboard Top

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

If there is one area that gives me pause on the Galaxy Book S, it is the keyboard. Key travel is exceptionally shallow, hovering near the 1mm mark.

I hesitate to call the keyboard bad because if you spend enough time with it, you do get used to it, but that adjustment curve is longer than any other laptop I have used recently (even the XPS 13 2-in-1). There is an uptick to shallow keyboards so long as you can get used to them: you can type very fast due to less movement.

Samsung Galaxy Book S Review Keyboard Keys

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

The keyboard backlight is also tricky. It technically has three stages, and Samsung uses this cool light green color scheme, which contrasts nicely with the grey keys. But to call it dim is an understatement. You'll only see the key illumination in the darkest of scenarios. While it's not clear why Samsung opts for such dim keys, my hunch is it plays into their focus on extended battery life, which is a big part of this laptop's story.

The trackpad is large, smooth, and has a satisfying (albeit shallow) click. Samsung uses Microsoft Precision drivers, and it is overall excellent.

top-tier sounds

Samsung Galaxy Book S surprisingly excellent audio

Samsung Galaxy Book S Review Speaker

Source: Windows Central (Image credit: Source: Windows Central)

Usually, when one talks about super-thin Ultrabooks, the speakers get the ax in terms of quality. That's not the case here.

Samsung uses two speakers on the bottom edges (side) that, due to the slight curve, will clear your lap or desk. The audio profile is tweaked by Samsung's go-to subsidiary AKG.

I'll be blunt and just say that Samsung did a remarkable job with the audio. It's loud, clear, and has perfect stereo separation and space. There's even some bass and resonance from the chassis, which is something larger laptops often omit but is found here. It's some of the best aural performance I have heard in the 13-inch class, and Samsung deserves commendation.

For conference calls, two microphones on the top deck also work very well.

OK CPU, excellent battery

Samsung Galaxy Book S benchmarks and battery

Samsung Galaxy Book S Review

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

Windows 10 on ARM PCs are a bit tricky to describe, and therein lies the problem. A laptop like the Galaxy Book S is perfect for using apps from the Microsoft Store, or using the new Edge browser's ability to install web-apps like Disney+, Kindle Cloud Reader, Twitter, Slack, Microsoft Teams, and more.

Other apps like Microsoft Office, Skype, and other productivity-based programs that are Win32 (x86) based also work quite well. The caveat is 64-bit x86 applications like from Adobe don't run at all on the Galaxy Book S, though I'd argue this is not the kind of laptop for that task.

Read more: How to get the most out of your Windows 10 on ARM device

The Galaxy Book S won't win awards for being the fastest laptop due to the eight-core Qualcomm Snapdragon 8cx processor (2.84GHz), but it's a solid step up from previous Snapdragon PC chips. Microsoft uses the "SQ1", which is just a fancy name for a ramped-up Snapdragon 8cx (3.0GHz), but it does reveal itself as the more powerful of the two PCs.

Geekbench 5

Geekbench 5.0 (CPU) (Higher is better)

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DeviceCPUSingle coreMulti core
Galaxy Book SSD 8cx6852,681
Surface Pro XSQ17252,819
Lenovo Flex 5GSD 8cx7132,828
Acer Swift 7i7-8500Y7321,106
Surface Laptop 3 13.5i5-1035G71,1774,413
Surface Laptop 2i5-8250U9093,372
Surface Pro 7i5-1035G41,1914,441
Surface Pro 6i7-8650U1,1133,519
Surface Pro 6i5-8250U9043,440
Dell XPS 13 2-in-1 7390i7-1065G71,2093,571

Geekbench 4

Geekbench 4.0 (CPU) (Higher is better)

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DeviceCPUSingle coreMulti core
Galaxy Book S (ARM)SD 8cx3,27111,096
Surface Pro X (ARM)SQ13,50511,727
Galaxy Book S (x86)SD 8cx2,0326,371
Surface Pro X (x86)SQ12,1826,822
Acer Swift 7i7-8500Y2,2814,905
Samsung Galaxy Book2 (ARM)SD8502,2627,405
Samsung Galaxy Book2 (x86)SD8501,3454,164
HP Envy x2 (ARM)SD8352,1116,314
Surface GoPentium2,0783,934
Surface 3Atom x71,0782,777
Surface Laptop 3 13.5i5-1035G75,26517,345
Surface Laptop 2i5-8250U4,20313,233
Surface Laptopi5-7200U3,7257,523
Dell XPS 13 2-in-1 7390i7-1065G75,45919,097

PCMark 10

Applications (Higher is better)

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Galaxy Book SSD 8cx4,308
Surface Pro XMicrosoft SQ14,617


CrystalDiskMark (Higher is better)

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Galaxy Book S1,912 MB/s425 MB/s
Surface Pro X2,023 MB/s832 MB/s
Samsung Galaxy Book2722 MB/s205 MB/s
HP Envy x2513 MB/s197 MB/s
Surface Go (SSD)1,185 MB/s133 MB/s
Surface Go (eMMC)260 MB/s145 MB/s
Surface 3149 MB/s33 MB/s
Surface Laptop 3 13.52,338 MB/s1,583 MB/s
Surface Laptop 3 152,028 MB/s806 MB/s
Surface Laptop 21,509 MB/s811 MB/s
Surface Laptop486 MB/s244 MB/s
Dell XPS 13 2-in-1 73902,400 MB/s1,228 MB/s


Samsung looked to reduce system costs by using its own UFS 256GB storage solution (KLUEG8UHDB-C2D1). Read speeds are respectable near 1,900 MB/s, but writes are just below 500 MB/s. While this isn't terrible, the Microsoft Surface Pro X uses a PCIe NMe SSD with slightly better read and write results.

RAM is fixed at 8GB LPDDR4x on either the 256GB or 512GB models.

For overall performance, the Galaxy Book S felt solid when sticking to productivity-based tasks. Gaming is a no-go if venturing beyond simple platformers or 2D titles. The 8cx can beat the Intel 8th Gen i7-8500Y, which is a dual-core low-power chip and speaks in favor of Qualcomm (which also costs less).

Example of the apps that I ran on the Galaxy Book S for my normal workload during this review period:

  • Microsoft Office (Word, OneNote, Excel)
  • Microsoft Edge (ARM64)
  • Hulu
  • Netflix
  • Spotify
  • VUDU
  • Disney+
  • Twitter
  • Microsoft Teams
  • Slack
  • Mail (
  • Flow Mail (Gmail)
  • Polarr Photo Editor Pro
  • Microsoft News
  • GroupMe
  • OneDrive
  • Skype
  • Microsoft To Do
  • myTube! (YouTube)
  • MobileDiscord PTB (Discord)
  • Unigram (Telegram)
  • ExpressVPN using manual configuration

Because ARM PCs run so efficiently, there are no fans or even vents for cooling, ergo no noise (and no coil whine, either). Like other ARM-based PCs, this one never also gets warm.

Where the Galaxy Book S shines is battery life. Though it has a slightly larger 42WHr battery compared to the Surface Pro X's 38Whr, the real power savings come from that marginally slower processor and lower resolution display, both of which add hours of longevity to the Galaxy Book S.


Source: Windows CentralSurface Pro X vs. Galaxy Book S battery life test. (Image credit: Source: Windows Central)

Using Microsoft's battery report feature, the Galaxy Book S ranged between 8 and 16 hours, averaging just over 11 hours for usage during testing.

Turning to synthetic tests, specifically PCMark 10, which loops between Microsoft Office Win32 apps, the Galaxy Book S pulls in just over 11 hours. That test was run with the display brightness set to 35 percent, which was more than adequate for working under overhead lights. The Surface Pro X yielded just 8.5 hours on the same test in the same scenario. Both results are with 20 percent battery remaining, which means both laptops could get another hour or two on top of that.

Note: The biggest battery draw on these devices is display brightness. Running them higher and brighter will result in reduced battery life, so your results may vary.

PCMark 10 Battery (Applications)

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Galaxy Book S11 hours, 11 mins21 percent left
Surface Pro X8 hours, 31 minutes20 percent left

Finally, turning to the 4G LTE, Samsung is using the Qualcomm X24 modem, which supports CAT20 LTE and up to 2 gigabits download speeds. Samsung sells the Galaxy Book S in partnership with Sprint and Verizon in the United States. Data performance and reception were excellent, with 60 Mbps achieved easily even without full-bar status, though individual results will vary. The modem never failed to connect and was extremely reliable.

Although the Galaxy Book S is sold through US carriers, the laptop is not SIM-locked. Dropping in a SIM from T-Mobile, for instance, worked just fine. Unfortunately, there is no eSIM support.

Filling a specific role

Conclusion: Samsung Galaxy Book S does some firsts, has one major oddity

Samsung Galaxy Book S Review Profile

Source: Daniel Rubino/Windows Central (Image credit: Source: Daniel Rubino/Windows Central)

The Galaxy Book S is one of the nicest looking Ultrabooks around that pushes various extremes. It is very light, super thin, all-metal, and solidly built with premium parts.

Its strengths are easily very long battery life that has particularly good standby time lasting days (or even weeks) and is always connected to the internet through Wi-Fi or LTE. Although the display is just full HD, it's a very evenly lit panel and matches Samsung's exceptional reputation for screen technology. Audio is also way better than expected, making this a fun laptop for watching Netflix in between work sessions.

Compared to the Surface Pro X, it has slightly worse performance, but it's not substantial. You could argue that the extra 2.5+ hours of battery life favoring the Galaxy Book S makes up for that slight performance hit. There's also the shorter 16x9 display (versus the 3x2) of the Galaxy Book S, and no pen support. Price-wise the Galaxy Book S costs less ($1,000) versus Surface Pro X at $1,250 with the keyboard.

My only main gripe is the keyboard. Typing can be frustrating due to the low-key travel, and it takes a while to adjust to the design. The keyboard backlight is also much too dim.

There aren't many laptops in this class that directly compete with the Galaxy Book S. There is a similar 2019 Acer Swift 7, which is nearly the same size and even slightly lighter. Build quality and audio is nowhere near as good, and the performance is worse due to dual-core Y-series Core processor. That Acer laptop is also $700 more expensive, lacks a touchscreen, a 4G LTE modem, and it has around half the battery life of the Galaxy Book S.

Another option is the best-value HP Spectre x360 13t. That laptop also gets very good battery life, has a more powerful 10th Gen i7 processor, double the storage, and it supports inking all for the same $1,000 price. HP, in theory, offers optional 4G LTE, but its availability is hit-and-miss, and that laptop is more than a half-pound heavier.

The question then comes down to how much you value one of the lightest, thinnest laptops on the market with quite remarkable battery life and 4G LTE? For most consumers, they will be better served with something like the HP Spectre x360. But for individual mobile workers who need an always-connected PC that effectively never hibernates and has instant-on that weighs just 2.1lbs, well, there are no other options I can recommend. That makes the Galaxy Book S a tool for a specific user, but a pretty great one for a friendly $1,000 price. That is if Samsung can just fix that keyboard.

Daniel Rubino

Daniel Rubino is the Editor-in-chief of Windows Central. He is also the head reviewer, podcast co-host, and analyst. He has been covering Microsoft since 2007, when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, laptops, next-gen computing, and watches. He has been reviewing laptops since 2015 and is particularly fond of 2-in-1 convertibles, ARM processors, new form factors, and thin-and-light PCs. Before all this tech stuff, he worked on a Ph.D. in linguistics, watched people sleep (for medical purposes!), and ran the projectors at movie theaters because it was fun.