The Pro X provides a great 2-in-1 experience and offers a speedy gigabit LTE connection. There are a few notable caveats: the software is buggy and there’s limited app compatibility. As we noted, if you must use Microsoft’s software, the Surface Pro X will get the job done, but many people would be better off with a Chromebook or the Surface Pro 7.

That said, this is a solid deal. The 256 GB models are each $200 off. If you opt for the 128 GB model, you’ll still receive a $100 discount. That makes the low end model just $899, and at the upper end, you can get 512 GB of storage with 16 GB of RAM for $1,599. You might choose to put that savings towards the Slim Pen ($145) or keyboard case (an extra $140) that Microsoft made for the Pro X.

The sale is direct from Microsoft and includes free shipping, but if you prefer to shop through Amazon, you’ll find the discounts there as well.

Buy Surface Pro X on Microsoft Store – from $899

Keyboard and trackpad

The consolation, I guess, is that at least you’re getting a superior typing case for the money. Microsoft makes the best tablet keyboard in the market, and the version for the Pro X is just as comfortable and well-spaced as some laptops. There’s plenty of travel here, and honestly if not for the slightly hollow feel to the deck, it would feel better than even those on proper ultraportables like the MacBook Air and the Galaxy Book Flex.

As for the trackpad below the keyboard, it was also responsive and smooth, though, as with most type covers, I wish the touchpad were bigger.

Performance and app compatibility

There’s a lot to love about the Surface Pro X’s hardware, but I’ve been most concerned about its performance. The 3GHz ARM-based SQ1 processor that Qualcomm made for Microsoft is promising, but Windows on Snapdragon has limited app compatibility that makes it difficult to recommend. Older Snapdragon PCs like the ASUS NovaGo or HP Envy X2 annoyed me because there is some serious systemwide lag. Since then, Microsoft has improved its software performance and released ARM64 support for faster programs. Still, I had reservations, and I was right to.

We couldn’t run the majority of our benchmark tests because, as Microsoft reps told us, “Not all traditional benchmark tests are compatible [with] ARM devices.” Oddly, even Geekbench, which we were told would be compatible, wouldn’t run. I downloaded a 64-bit version of Slack and couldn’t install it, but Telegram for Desktop worked fine.

I was surprised that, despite being unable to run pretty much any of our typical gaming and graphics benchmarks, I was actually able to play a few rounds of Overcooked on the Pro X. The game ran pretty smoothly and quickly, too. But don’t expect to play anything more demanding, like Call Of Duty.

Just as troubling as the limited app compatibility are the bugs I experienced. Barely a day after I started testing the Surface Pro X, it hung on me twice. The first time, I was trying to adjust the screen brightness and the panel stopped reacting. It refused to get brighter or dimmer, no matter if I was using keyboard shortcuts, the sidebar slider and or even display settings. I had to restart the Pro X to regain brightness control. (I’ve encountered the same screen issue two more times since.)

The other glitch happened after I put the Pro X in my tote bag to bring home. When I opened it to get some work done, I was greeted with a Blue Screen Of Death and a message saying “Windows didn’t load correctly”. I had to restart the PC.

Little problems continued to crop up. I was downloading our benchmark tests from Google Drive in Chrome, and after clicking through three folders, the tab died, saying “Aw Snap! Something went wrong while displaying this webpage.” Our video producer tried to play a YouTube video on Edge while shooting B-roll, and the page wouldn’t load. He had to restart the browser before he could pull up any clips.

These issues are troubling. They could potentially be fixed with a firmware update, but for now they’re definitely a cause for alarm. Even if the tablet never crashed, it would still be difficult to find apps that would run on it.

Speedy, reliable LTE

My favorite thing about the Pro X and most Snapdragon PCs is the gigabit LTE connections they pack. I used a T-Mobile SIM card with the Pro X and was frankly delighted by the fact that I could continue typing this review during a 45-minute train ride out to Long Island. It wasn’t just Google Docs that I needed — the internet connection meant I could look up the specs for competing devices, update our benchmark database and watch Microsoft’s promo trailers and our hands-on videos as I collected research. With the speedy transfers the Snapdragon X24 modem provided, all these pages and videos loaded quickly and I could get a lot of work done.

Battery life

	Battery life
Surface Pro X	11:45
Surface Pro 7	7:50
Surface Pro 6	15:34
iPad Pro 12.9 (2018)	11:30
Galaxy Tab S6	15:08

Microsoft promises up to 13 hours of normal use on the Pro X and that estimate is pretty accurate. On our battery test, the Pro X lasted close to 12 hours, which is longer than the (Intel-powered) HP Envy X2’s 10.5 hours and a lot more than the Surface Pro 7’s 8 hours. The iPad Pro 12.9 clocked a slightly shorter 11.5 hours.

Wrap-up

I’m torn about the Surface Pro X. It’s a beautiful piece of hardware that shows Microsoft has excellent engineering chops. When the Surface Pro X works, it’s a fantastic experience. The wonderful keyboard, combined with the speedy LTE connection on the go and spacious screen, make it a delight to bang out some documents from wherever. But crashes and compatibility remain major concerns.

Microsoft says for the Pro X is designed for mobile workers who spend most of their days using a web browser or basic productivity apps.

Fair enough, but asking people to pay $1,140 (including the keyboard case) for something that might not run all the apps they need is outrageous. Especially since Chromebooks are just as good at handling browser-based applications and generally cost $500 or less. If you’re in the sliver of the population that needs access to a small handful of Windows apps, then maybe the Pro X is sufficient. But bear in mind you’ll be paying a hefty premium for Windows, an LTE connection and gorgeous hardware.

Now Microsoft thinks it has a solution to the problem. As part of a new partnership with PC manufacturers, the company is launching an initiative called Secured-core PC. With Secured-core PC, Microsoft is rethinking Windows’s relationship with firmware and how it handles booting up a device.

Under this new system, a processor’s firmware will power up the system as always, but then limit how much the processor trusts its own firmware to define the code path it takes to launch the system. The processor will instead call on Microsoft’s bootloader for those instructions. The ultimate goal of the framework is to create a safe and reliable path the processor can take each and every time it boots your computer. One major advantage of this system is that it puts the emphasis on preventing attacks, instead of merely detecting them.

Since Windows 8, Windows has included a feature called Secure Boot that checks the authenticity of a bootloader to ensure it’s safe to use. The issue with Secure Boot and the reason Microsoft is moving to this new system is that it depends on trusting firmware to check each piece of boot software. Because it operates on the assumption your firmware is safe, Secure Boot can’t protect your system when the firmware is attacked.

To implement Secured-core PC, Microsoft is working with all the major chipmakers, including Intel, AMD and Qualcomm, to make processors that feature secure encryption keys burned into the chips during the manufacturing process. Since the system depends on new hardware to protect your PC, you won’t be able to download a software update to protect your existing PC against firmware-level attacks. That said, there’s a good chance your next Windows computer will come with the feature built-in. One of the first devices that will include Secured-core PC is Microsoft’s upcoming Surface Pro X, with devices from Dell, Lenovo and Panasonic to follow.