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HP ENVY x360 15 vs. IdeaPad Flex 5 15: Which AMD-based convertible is best for you?

Hp Envy X360 15 2021 Review
Hp Envy X360 15 2021 Review (Image credit: Windows Central)

Although these two convertible laptops are available with AMD and Intel hardware, I'll be focusing on the former platform for this comparison. I reviewed the HP ENVY x360 15 with AMD Ryzen 7 5700U and came away very impressed. You can get the same feature set — albeit with Thunderbolt 4 port — with Intel hardware in the HP laptop. It's almost the same story for AMD and Intel versions of the Flex 5 15, though neither model gets Thunderbolt.

Take a look at how the AMD models compare in terms of raw specifications.

HP ENVY x360 15Lenovo IdeaPad Flex 5 15
OSWindows 10
Windows 11
Windows 10
Windows 11
ProcessorAMD Ryzen 5 5500U
AMD Ryzen 7 5700U
AMD Ryzen 3 5300U
AMD Ryzen 5 5500U
AMD Ryzen 7 5700U
RAMUp to 16GB DDR4-3200
Dual-channel
Upgradeable
Up to 16GB DDR4-3200
Dual-channel
Soldered
GraphicsIntegrated
AMD Radeon
Integrated
AMD Radeon
StorageUp to 1TB M.2 PCIe SSDUp to 512GB M.2 PCIe SSD
Display15.6 inches
1920x1080 (FHD)
16:9 aspect ratio
250 nits or 400 nits
Touch, glossy
15.6 inches
1920x1080 (FHD)
16:9 aspect ratio
250 nits
Touch, glossy
InkingHP MPP 2.0 Tilt pen
Included
Lenovo Digital pen
Sold separately
PortsUSB-C 3.1 (Gen 2)
Two USB-A 3.1 (Gen 2)
HDMI 2.0
3.5mm audio
SD card reader
USB-C 3.2 (Gen 1)
Two USB-A 3.2 (Gen 1)
HDMI 1.4b
3.5mm audio
SD card reader
AudioDual stereo speakers
Bang & Olufsen tuning
Dual stereo speakers
Dolby Audio tuning
ConnectivityWi-Fi 6
Bluetooth 5.0
Wi-Fi 6
Bluetooth 5.0
CameraFront-facing 720p
Webcam shutter
Front-facing 720p
Webcam shutter
SecurityFingerprint readerFingerprint reader
Battery51Wh52.5Wh
Dimensions14.13 x 8.98 x 0.72 inches
(358.9mm x 228.1mm x 18.3mm)
14.07 x 9.36 x 0.7-0.82 inches
(357.6mm x 237.9mm x 17.9-20.9mm)
Weight4.11 pounds (1.86kg)3.97 pounds (1.8kg)
MaterialAluminumAluminum (top)
Plastic (bottom)

Features and design

These are both mid-range convertible laptops that start at an affordable price, so you can expect a few missing features compared to the overall best Windows laptops out there. That's not to say you're getting an unfair deal — both of these laptops have a lot to offer for the asking price.

The ENVY x360 15's all-metal design feels a lot more expensive than it really is. It's thinner than the Flex 5, though it does weigh a bit more. That's no doubt because the Flex 5 15 cheats a bit with a plastic bottom chassis. The lid is metal, though, for extra stability when rotating the screen around for tent, stand, and tablet modes.

Ports are nearly the same, and unfortunately because of the AMD hardware you don't get Thunderbolt. Both laptops have a USB-C port, both have dual USB-A ports, HDMI, 3.5mm audio, and an SD card reader. The versions of the ports differ a bit (the x360 15 has HDMI 2.0 while the Flex 5 has HDMI 1.4b, for example), but for the most part you're getting the same connectivity. Both laptops have Wi-Fi 6 and Bluetooth 5.0.

Source: Lenovo (Image credit: Source: Lenovo)

One area where the Flex 5 15 has an advantage is with its top-firing audio. Above the keyboard is a grille that hides dual 2W stereo speakers for unmuffled audio in notebook mode. The ENVY x360 also has grilles that flank the keyboard, but they're either for ventilation or for show. The real audio is pumped out of dual down-firing speakers on either side on the bottom of the laptop. These might work better for tablet mode, but they do risk being muffled if the PC is on your lap.

I loved the enormous Precision touchpad and comfy keyboard on the ENVY x360 15, and I had no issues working with the laptop for all productivity. The IdeaPad Flex 5 15 doesn't have Lenovo's coveted ThinkPad keyboard, but it's still excellent. An added bonus is the inclusion of a full number pad, something the ENVY does not include. The tradeoff here is a smaller touchpad on the Lenovo device.

Ultimately both of these convertibles are above average in terms of build quality and features at this price point. The ENVY x360 15 might feel more solid due to the all-metal design, but the Flex 5 15 is just a bit lighter. Features like fingerprint reader, audio, camera, are pretty much a draw, and keyboard preference (if there is any) will no doubt come down to familiarity with either brand.

Display and inking

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

Neither the ENVY x360 15 nor the IdeaPad Flex 5 15 has made the jump to a taller aspect ratio; both are using 16:9 with a 1920x1080 (FHD) resolution. The Flex 5 15 has just the one display option with 250 nits brightness and glossy finish. Because this is a convertible PC, it's a touch display with inking support. Lenovo's active pen is sold separately.

The HP ENVY x360 has a similar basic touch display with 250 nits brightness and glossy finish, but you can also upgrade to a screen with between 300 and 400 nits brightness. In my testing, this display offered 100% sRGB color reproduction. If you hate dealing with glare from overhead lights, this is an upgrade you'll want. An HP MPP 2.0 Tilt active pen is included with each laptop, adding to the overall value.

Both displays have relatively thin bezel, with a camera above the screen with webcam shutter for extra privacy. Both 720p cameras will get the job done, but you can do far better with a third-party option from our roundup of the best webcams.

Performance and price

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

The latest AMD Ryzen 5000 Mobile CPUs are available in both of these laptops, delivering superb performance and long battery life. The Ryzen 7 5700U in the ENVY x360 15 topped our performance charts in a bunch of benchmarks, and you can expect similar performance from the Flex 5 15. Battery lasted about 14 hours in the HP laptop, and again you should get something similar from Lenovo's PC.

Up to 16GB of RAM is available in either device, but note that it's soldered in the Flex 5 15 with no option for upgrades after purchase. The SSD in the Flex 5 15 is accessible. The ENVY x360 15 can have both its memory and storage upgraded after purchase, allowing you to keep it relevant a bit longer into the future. Our guide on how to upgrade RAM in the ENVY x360 15 can help you through the process.

If you're looking for an affordable laptop that can absolutely crush standard work like word processing, photo editing, email, and heavy web browsing, either of these laptops will get the job done.

Flex 5 15 prices start at about $550 for a model with Ryzen 5 CPU, 8GB of RAM, 256GB SSD, and 250-nit display. This is with one of Lenovo's frequent discounts, so that price might jump up between sales. The ENVY x360 15 starts at $650 for a model with similar specs, but there are also a ton of configuration options available at HP's official site. Lenovo is down to just one Flex 5 15 config, though you can find others for sale at alternate retailers.

Cale Hunt
Cale Hunt

Cale Hunt is a Senior Editor at Windows Central. He focuses mainly on laptop reviews, news, and accessory coverage. He's been reviewing laptops and accessories full time since 2016, with hundreds of reviews published for Windows Central. He is an avid PC gamer and multi-platform user, and spends most of his time either tinkering with or writing about tech.