Asus Zenbook S16 review: The ultrabook, done right

There's a specific kind of frustration that comes with 16-inch laptops. You want the screen real estate, the full-size keyboard, the room to breathe. But you don't want to lug around a two-kilo slab that hogs your entire backpack.

For years, 16-inch meant heavy. Or thick. Or both. The Asus Zenbook S16 (UM5606GA) wants to break that equation. At 1.1 cm thin and 1.5 kg on the scale, it's a 16-inch machine built like a 13-inch ultrabook—except it packs a 3K OLED screen, six speakers, an AMD Ryzen AI 9 chip running at 28 watts, and enough ports to make your dongle drawer irrelevant.For Rs 1,49,990 though, the Zenbook S16 isn't selling you just portability. Plenty of laptops are portable. It's selling you the idea that you don't have to give up anything to get it—not the screen, not the speakers, not the ports, not the power. That's a big claim for a laptop that's barely a centimetre thick. The next few thousand words are about whether Asus can back that up.

The 16-inch laptop that forgot to be heavy

Pick up the Zenbook S16 and your brain does a small double-take. It doesn't feel like a 16-inch laptop should. There's a disconnect between the screen size you see and the weight you register in your hand. At 1.5 kg, it's lighter than several 14-inch ultrabooks. At 1.1 cm, it's roughly half the thickness of a typical 28W ultraportable. Asus claims this is the smallest-footprint 16-inch laptop in its class—having used it for weeks, that claim feels honest.

The chassis is a CNC-machined unibody, and the build quality is tight. No flex in the lid, no creak around the hinges, no soft spots on the keyboard deck. The material here is Ceraluminum—Asus's ceramic-infused aluminium that took four years to develop. It's harder and more scratch-resistant than standard aluminium, with a matte, almost stone-like texture that doesn't collect fingerprints. There are two colour options to choose from, with names that sound more like paint swatches: Scandinavian White (the one you see in pictures) and Antrim Gray, both subtle, earthy finishes that feel more considered than the typical silver-or-space-grey choice.

I've been carrying this around daily for weeks—stuffed into bags, pulled out on wooden desks and cafe tables—and the surface still looks clean.But the cleverer design story is underneath. The keyboard deck is punctuated by 3,522 CNC-machined geometric cooling vents. They look like a carefully plotted pattern, almost decorative. But Asus says this grille design improves airflow efficiency by 50 per cent compared to a standard layout, and that's how a laptop this thin manages to run at 28W without melting itself.

More on that later.The laptop also meets MIL-STD-810H military-grade durability standards. It won't matter on day one. It might matter on year three.

What your hands actually live with

All that build quality means nothing if the inputs let you down—and they don’t. The keyboard has a 19.5 mm pitch and 1.1 mm of key travel—the longest in this class of ultraportables. Each keycap has a subtle 0.1 mm dish-shaped indentation that guides your fingers into place.

It's backlit, comfortable for extended typing sessions, and one of the better ultrabook keyboards around. You don't feel like you're typing on a flat surface and hoping for the best.The trackpad on S16 is 40 per cent larger than the S16 from the yesteryear at 150.3 x 99.5 mm—big enough that gestures feel natural rather than cramped. Click feedback is satisfying with a 0.23 mm travel depth, and multi-touch gestures work reliably.

Between the keyboard and the trackpad, you forget you're working on something barely a centimetre thick.Then there are the ports—also unusually generous for a laptop this thin. You get two USB4 Type-C ports (40 Gbps each, with DisplayPort and Power Delivery), a full-size HDMI 2.1, a USB 3.2 Gen 2 Type-A, a standard SD card reader, and a combo audio jack. That's a spread most ultraportables half a centimetre thicker can't match.The SD card reader is a thoughtful inclusion—especially for photographers and content creators who'd otherwise carry an adapter. HDMI 2.1 drives 4K external displays directly. And with AMD's multi-display support, you can run up to three external monitors off the USB-C and HDMI ports. And when you're not plugging things in—Wi-Fi 7 with 320 MHz channels, and Asus's Wi-Fi SmartConnect feature auto-selects the strongest available network.

In practice, wireless stability has been rock solid.

That OLED screen does most of the talking

If there's one single reason to buy the Zenbook S16, it might be the display. This is a 16-inch 3K (2880 x 1800) ASUS Lumina OLED touchscreen in a 16:10 aspect ratio, and it is flat-out gorgeous.The basics: PANTONE Validated, factory-calibrated to a Delta E of less than 1, VESA DisplayHDR True Black certified. That means colour accuracy is reference-grade out-of-the-box.

If you do photo editing, design work, or video colour grading, you can trust this screen without second-guessing it. No need to plug in an external monitor to sanity-check your colours.But specs only tell part of the story. In daily use, it's the contrast that hits you first. OLED blacks are absolute—the pixels literally turn off. Dark scenes in movies have genuine depth instead of the washed-out grey that LCD panels produce.

Highlights pop without blowing out. The 16:10 ratio adds meaningful vertical space for documents and web browsing, and at 3K resolution, text rendering is crisp without needing to squint or scale things up aggressively.Asus has layered on protective tech too. TUV-certified low blue light for marathon sessions. OLED Care features that shift pixels and manage brightness to prevent burn-in. And a free OLED screen replacement for burn-in issues while under warranty—a smart move that addresses the one lingering anxiety people have about OLED longevity.The touchscreen is responsive but, on a 16-inch clamshell, you'll default to the trackpad 90 per cent of the time. It's useful for the occasional scroll or zoom, but this isn't a convertible—touch is a convenience, not the primary interaction mode.

Six speakers in a 1.1 cm body. Yes, really.

Laptop speaker claims usually deserve an eye-roll. The Zenbook S16 earns an exception. There are six speakers crammed into this thin body—two tweeters and four woofers—with Dolby Atmos and a smart amplifier that Asus says pushes volume up to 3.5 times higher than standard laptop speakers.The result is surprising. There's genuine stereo separation, audible bass, and enough volume to fill a room without distortion. Music sounds layered rather than flat. Movie dialogue is clear and distinct from background scores. You won't sell your Bluetooth speaker after hearing these, but you'll reach for it less often. For video calls and casual listening, the speakers are comfortably good enough to skip headphones entirely.Asus also includes Two-Way AI Noise Cancellation for calls—it filters noise on both the mic and speaker sides. You can choose between Normal, Balanced, Single Presenter, and Multi-Presenter modes depending on your environment. It's not magic, but it smooths out distracting background noise effectively enough. The FHD IR webcam complements the audio tricks with Windows Hello face login, an ambient light sensor for auto-brightness, and 3D noise reduction for cleaner video in low light.

It's not class-leading, but it's reliable and fast—good enough that video calls feel sorted without fussing over settings.

What's inside that ceramic lid

The Zenbook S16 runs on the AMD Ryzen AI 9 465—a 10-core, 20-thread processor based on the Zen 5 architecture. It's paired with 32 GB of LPDDR5X-8533 RAM (soldered, so no upgrades) and a 1 TB PCIe 4.0 NVMe SSD.Day-to-day, this setup is fast and fluid. Opening a dozen apps simultaneously, jumping between 40 browser tabs, running a video call while editing a document in the background—it all feels smooth.

The Ryzen AI 9 465 handles multitasking without breaking stride.For creative workloads, the integrated Radeon graphics built on RDNA 3.5 architecture are competent for what they are. Photo editing in Lightroom and Photoshop is snappy. Timeline scrubbing in Premiere Pro is manageable for shorter projects. Batch exporting RAW files doesn't stall the system. You won't be rendering 3D scenes at professional speeds or gaming at high settings—this is integrated graphics, not a discrete GPU—but for the kinds of creative tasks most ultrabook users actually do, it holds its own.

The 1 TB SSD is fast enough that you never feel storage bottlenecking anything.What makes all of this work in a chassis this thin is the cooling. Most ultraportables at this thickness run their processors at 15W. The Zenbook S16 sustains 28W—nearly double—without throttling. That's a 50 per cent TDP boost over its predecessor, and it's the reason this laptop feels faster than its form factor suggests. The system uses dual fans, a 0.7 mm ultra-slim vapour chamber, and those geometric cooling vents on the keyboard deck.

Together, they keep the chip at full power while staying under 25 dB during light workloads—essentially silent. Under sustained load, the fans spin up but stay controlled. You won't hear them screeching during a long video call or while crunching through a batch of photos.The 83 Wh battery holds up its end of the bargain. In a typical workday of browsing, document editing, video calls, and some streaming, you can comfortably get 8-9 hours before reaching for the charger.

Lighter use with reduced brightness pushes that further. The included 68W USB-C charger tops things up quickly, but what's more practical is the USB-C Easy Charge support—the laptop will accept power from any USB-C source, including power banks, airline chargers, and even non-PD chargers at a slower 4.5W trickle.

When you're travelling light and don't want to carry a dedicated brick, that flexibility matters.

The other half of the experience

On the software side, the laptop ships with Windows 11 Home, and a full suite of Asus utilities.

MyASUS is the central hub for system diagnostics, fan control, battery management, and display calibration via Asus Splendid. ScreenXpert 3.0 adds multi-window management tools—App Switcher, App Navigator, and quick camera/mic toggles—that are genuinely useful when you're juggling multiple monitors. There's also Asus Switch for migrating data from an old laptop, which saves time during the initial setup.

The pre-installed software is mostly functional rather than bloatware, which is a welcome change from some competitors—but a 10-minute cleanup on day one to toss what you don't need wouldn't hurt.This one’s also a Copilot+ PC, and AMD’s XDNA NPU runs AI tasks locally without leaning on the cloud or taxing the CPU. The AI features you can find: Studio Effects v2 corrects your eye contact and fixes lighting on video calls, Live Captions transcribes audio to text in real time, and Recall keeps a searchable visual timeline of your activity.

Asus has also thrown in StoryCube, an AI media manager that auto-sorts photos by faces and locations and generates highlight reels from your library.

There's also the AI Camera app, which cleans up webcam noise in low light. Now, some of this is useful, most of it you'll try once and move on from. If I were to be honest, these are table stakes for any AI PC, and you can just live fine even without these.

Time to talk money

Rs 1,49,990 is serious money. But so is the Zenbook S16. The OLED screen is genuinely one of the best on any laptop right now.

The six-speaker setup sounds better than it has any right to at this thickness. The port spread covers everything without a single dongle. And the fact that a 28W processor runs cool and quiet inside a body this thin still doesn't fully make sense to me.Where you'll need to make peace: the 32 GB RAM is soldered—so what you buy is what you live with, but given how RAM prices keep climbing, Asus probably did you a favour locking it in early.

There's no discrete GPU, but nobody shopping for a centimetre-thin ultrabook expects one. Still, two caveats in a list that long? I’d say that's a good ratio.So, if what you want is a big, beautiful screen in a body you can actually carry around all day—with the battery, ports, and performance to back it up—this is it. A 3K OLED display, 1.1 cm on the tape, 1.5 kg on the scale, performance you wouldn't expect at this thickness, all-day battery, every port you need, and sound that fills a room—the Zenbook S16 has all of it. This is everything you want in an ultrabook, done right.

Our rating: 4/5