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Need a PC that can serve double duty as a notebook and a tablet? The burgeoning convertible market has you covered.

Product Specs Starting price

Asus Transformer Book T100HA
Operating system: Windows 10 Home
Display: 10.1" 1280x800
Processor: Intel Atom x5-Z8500
Storage: 64GB eMMC SSD, microSD slot
Battery life: 12 hours 
Connectivity: 802.11n, Bluetooth 4.0
Thickness: 0.72" (tablet and dock)
Weight: 2.3lbs (tablet and dock)

Microsoft Surface Pro 4
Operating system: Windows 10
Display: 12.3" 2736x1824
Processor: Intel Core m3, i5, or i7 (Skylake)
RAM: 4GB, 8GB, or 16GB
Storage: 128GB, 256GB, 512GB, or 1TB + microSD slot
Battery life: 9 hours
Connectivity: 802.11ac, Bluetooth 4.0
Thickness: 0.33"
Weight: 1.7 lbs
(128GB SSD,
4GB RAM, Intel Core m3 CPU)

HP Spectre X360
Operating system: Windows 10 Home
Display: 13.3" 1920x1080 (2560x1440 optional)
Processor: Intel Core i5-6200U, Core i7-6500U
RAM: 4GB or 8GB
Storage: 128GB, 256GB, or 512GB SSD
Battery life: 12 hours
Connectivity: 802.11ac, Bluetooth
Thickness: 0.63"
Weight: 1.6 lbs

(Core i7 CPU, 256GB storage, 8GB RAM, 1080p screen)

Microsoft Surface Book
Operating system: Windows 10 Pro
Display: 13.5" 3000x2000
Processor: Intel Core i5 or Core i7 (Skylake)
RAM: 8GB or 16GB
Graphics: Nvidia discrete GPU, 1GB RAM (optional)
Storage: 128GB, 256GB, or 512GB SSD
Battery life: 12 hours
Connectivity: 802.11ac, Bluetooth 4.0
Thickness: 0.9"
Weight: 3.5 lbs
(Intel Core i5 CPU, 8GB RAM, 128GB SSD, no discrete graphics)

Asus Transformer Book T100HA
For those who want an entry-level Windows tablet that can serve double duty as a laptop when needed, Asus' Transformer Book T100HA looks like a good bet for just $295 or so. This convertible comes with a Cherry Trail Atom x5-Z8500 quad-core CPU, 4GB of RAM, and 64GB of onboard storage. The 10.1", 1280x800 screen isn't as high-density as the panels in some other tablets, but we like the 16:10 aspect ratio—and the affordable price tag.

Microsoft Surface Pro 4
Microsoft's Surface Pro 4 refines the company's do-it-all tablet formula with Skylake CPUs, a higher-resolution "PixelSense" display with better touch and pen tracking, and a slightly-improved Type Cover keyboard with a better trackpad. The Pro 4 is a refinement of the Surface Pro 3, not a revolutionary update. If you're already sold on the formula and haven't bought in yet, though, this is the machine you'll probably want. The base Surface Pro 4 starts at $899.99 with a Core m3 CPU, 4GB of RAM, and a 128GB SSD. Microsoft now throws in the Surface Pen for free, but buyers will still have to pick up the Type Cover for an extra $130.

HP Spectre X360
Don't want a convertible machine with a detachable keyboard, but still want more flexibility than a traditional laptop offers? HP's Spectre X360 could be just the ticket. This machine can convert from a regular laptop to "tent," "stand," and "tablet" modes. Reviewers praise this machine's solid, all-aluminum body, gorgeous high-resolution screen, and lengthy battery life, so we think it's a solid choice if the form factor appeals to you. HP offers a range of CPU, storage, and screen resolutions for the Spectre on its website, but the $1,160 Microsoft Store "Signature Edition" looks like the one we'd buy. This machine combines a Core i7-6500U CPU, a 256GB SSD, and the 1080p screen choices with an assurance of a pure Windows 10 install.

Microsoft Surface Book
Microsoft's Surface Book is the biggest splash this segment of the mobile marketplace has seen in some time. It's an unabashedly high-end convertible with a detachable screen, all-metal construction, Core i5 and i7 CPU options, and an optional GeForce discrete graphics card. The Book's screen can pop off to enter what Microsoft calls "clipboard mode," and an included Surface Pen lets owners sketch and take notes as they would on a Surface tablet. The screen can't fold all the way over as it can on the Spectre X360, but it can be flipped around on the hinge to achieve similar positions.

Since we last wrote about it, Microsoft has issued a number of firmware and driver updates for the Surface Book meant to smooth out a wide range of minor issues with the hardware that arose after its launch. The Surface Book starts at $1,499 with a Skylake Core i5 CPU, 8GB of RAM, a 128GB SSD, and no discrete graphics chip.