While I mostly enjoyed the keyboard, though, I was not impressed with the touchpad. Once again, HP went with a Synaptics clickpad -- seriously, would it have killed HP to go with one of Microsoft's own Precision touchpads? As spacious as the trackpad is, it's also stubborn and unpredictable, with a high-friction surface that makes it harder to drag the cursor around than it should be. Also, it frequently rebels by registering phantom left clicks. This caused me to grab and reorder my pinned browser tabs when really I was trying to move the cursor around the desktop. I've noticed the same thing on other Windows laptops I've tested (many of which use Synaptics); it's a telltale sign of a subpar trackpad.

Throughout, the machine is made of solid aluminum, with the hinge made of stainless steel underneath. Though the silver color and unibody construction have carried over from the original, you'd never mistake this year's for the 2015 edition. For starters, HP swapped in the same new logo it introduced earlier this year on its Spectre 13.3 ultraportable; you'll see that on both the lid and the lower bezel.

There's also now a conspicuous Bang & Olufsen speaker grille stretching above the keyboard. In addition to the two speakers in there, there are two more on the bottom of the laptop, which means the total speaker count is double what it was last year. HP says the idea in separating the two speaker pairs the way it did was to ensure decent sound regardless of the usage mode.

The speakers are certainly loud -- when listening alone in my apartment, I opted to cap the volume at around 25, but probably could have gone even lower. But like so many other laptop speakers that came before it, these can sound a bit tinny, depending on your musical selections. Frank Zappa's "Son of Mr. Green Genes" and Motown songs like Jimmy Ruffin's "What Becomes of the Brokenhearted" seemed to be missing some crucial bass and drum notes. Beyoncé's "Crazy in Love" sounded better, but then again, it's a tinnier track to begin with. All told, the audio here is acceptable, but it's nowhere near as good as on, say, the new MacBook Pro, which I happened to be testing at the same time as the x360.

Also new this time: The addition of USB Type-C ports -- two of them, to be exact. These ports also support Thunderbolt 3 accessories, and it's also through one of these ports that you'll charge the machine. Don't worry, though: One of the original three full-size USB connections remains, meaning you won't need a dongle to charge your phone or plug in any other peripherals you might have lying around.

Unfortunately, however, while the full-size USB port and headphone jack both live to see another day, the rest of last year's ports have all been sacrificed in the name of a slimmer design. That includes the full-size HDMI socket, the Mini DisplayPort and the full-size SD reader. This isn't a surprise, especially considering what competing laptops have to offer, but it might still be a shame, depending on your needs.

One thing that hasn't changed much: the screen. We once again have a 13.3-inch, full HD panel with a 300-nit brightness rating and a color gamut that includes 72 percent of the sRGB space. The only difference this time is what isn't offered: Whereas last time there was a step-up QHD screen option, this time it's 1080p throughout, regardless of what the other specs are. An HP spokesperson declined to comment on whether the company might eventually bring back that sharper display option. While that might be a dealbreaker for people who were otherwise prepared to spend $1,500 or so on a high-end machine, the screen nonetheless offers satisfying viewing angles, with good contrast and color fidelity when you dip the screen forward.

Performance and battery life

As I write this, I'm sitting on my couch in shorts, and the Spectre x360 is burning my thighs. I periodically have to shift the machine or even put it on a coffee table to give my legs a rest. The fans are whirring loudly enough for me to hear over my TV, though, so at least I know they're working. So much for that improved cooling setup, I guess -- all I'm doing is typing in Google Docs with a dozen open Chrome tabs. Spotify is open, but not streaming. None of this should be enough to send the machine into a tizzy.

This seemed odd to me, and indeed, I brought in a second x360 for additional testing. That one didn't get quite as hot, but it was still warm, even when all I was doing was working in a browser and Slack while streaming music. Even so, the intense heat I felt that one time is concerning. After all, that laptop was a production unit, coming off the same factory lines as any laptop you might buy. If it could happen to me, it could happen to you.

The heat and fan noise are a shame, because as loud and hot as it is, it's otherwise a strong performer. For starters, the x360 is, for now, one of the only laptops available with Intel's seventh-generation Core processors, code-named "Kaby Lake." It's also available with up to 16GB of RAM on more expensive configurations, though PCIe solid-state drives are standard across the board. The model I tested had a 2.7GHz Core i7-7500U CPU, 16 gigs of memory, integrated Intel HD 620 graphics and 512GB of storage.

In everyday use, the machine boots in a brisk seven seconds. Speaking of log-ins, the webcam here now has a 12 percent wider field of view and supports Windows Hello facial recognition. Setting this up was quick and easy, and the camera recognized me every time -- so long as I wasn't wearing glasses, anyway. To be fair, I had this same problem recently with Microsoft's Surface Book, which also supports Windows Hello. Hopefully, future iterations of the technology will take into account that even regular contacts wearers wear spectacles sometimes.



As for disk speeds, its NVMe-made PCIe solid-state drive achieved average max write speeds of 1.76 gigabytes per second, according to the ATTO benchmark. Its write rates weren't nearly as fast, but still solid at 579 MB/s.

HP Spectre x360 (13-inch, 2016) 13:36 Surface Book with Performance Base (2016) 16:15 Surface Book (Core i5, integrated graphics) 13:54 / 3:20 (tablet only) Apple MacBook Pro 2016 (13-inch, no Touch Bar) 11:42 Surface Book (Core i7, discrete graphics) 11:31 / 3:02 (tablet only) Apple MacBook Pro with Retina display (13-inch, 2015) 11:23 Apple MacBook Pro 2016 (15-inch) 11:00 HP Spectre x360 15t 10:17 Apple MacBook Pro 2016 (13-inch, Touch Bar) 9:55 ASUS ZenBook 3 9:45 Apple MacBook (2016) 8:45 Samsung Notebook 9 8:16 Microsoft Surface Pro 4 7:15 HP Spectre 13 7:07

HP rates the battery life at up to 15 hours and 15 minutes on the 13-inch model -- up from 12.5 hours last year. (The 15-inch version we're not reviewing today promises a max of 13 hours.) The company says that's thanks to both more power-efficient processors and a larger 57.8Wh battery, up from 56Wh last year.

Though I never hit that 15-hour mark, I did indeed get longer battery life than on last year's model: 13 hours and 36 minutes in Engadget's standard rundown test, which involves looping a video at fixed brightness. That's hours longer than with some laptops this size, like the 13-inch Touch Bar MacBook Pro, and it's about two hours longer than on last year's x360.

Obviously, your mileage will vary, but HP says the machine will recharge consistently fast regardless. In particular, the company claims that its "Fast Charge" tech can return the system to a 90 percent charge in 90 minutes.

Configuration options

The new x360 starts at $1,150 and is available on HP's website and at Best Buy here in the US. For that base price you get a seventh-gen Intel Core i5 processor, 8GB of RAM and a 256GB SSD. For $1,159 you get similar specs, except a Core i7 CPU instead of an i5. From there, you can step up to a $1,299 model that offers a Core i7 chip and doubles both the RAM and the storage (so: 16GB of memory with a 512GB SSD). The top-end model, which goes for $1,499, maxes out at 1TB of solid-state storage.

Either way, as mentioned earlier, the screen resolution tops out at 1080p. The graphics are the same across the board too: Intel's integrated HD 620 solution, though the i7 models have a higher Turbo Boost clock speed.

The competition

The Spectre x360 always has plenty of competition, with many of its rivals also being brand-new releases. The most direct comparison might be the Lenovo Yoga 910, another laptop with a 360-degree hinge, a $1,050 starting price, and similar specs (up to a seventh-gen Core i7 processor with 16GB of RAM and a 1TB SSD). Superficially, the biggest differences are that this has a larger 13.9-inch display (and therefore a slightly larger footprint) and it has a higher-res 3,840 x 2,160 screen option. (I've been testing the 910 alongside the Spectre x360, so you can expect to see a full review of it on Engadget soon.)

There's also Microsoft's refreshed Surface Book, which also can be used in various modes. (It has a detachable screen, though, not a 360-degree hinge.) I reviewed it recently and was generally fond of it, my major complaint being that it's relatively heavy, at 3.68 pounds. In exchange for that heft, at least, you get 16-hour battery life, fast performance and lots of ports. Think: two full-size USB 3.0 connections, a Mini DisplayPort, a headphone jack and a full-size SDXC reader.