Lenovo Flex 4 80SA0000US 14-inch

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The Lenovo Flex 4 80SA0000US is a best selling 2-in-1 budget laptop that’s received positive reviews for its keyboard quality and its lightweight, versatile design. The 2.1GHz Intel Pentium Dual-Core 4405U processor may not be the fastest, but it eases through basic tasks according to most users. Users liked its build quality, suggesting that it feels sturdy and its touchscreen adds convenience. However, throwing heavier tasks at it saw some noticeable lag, with many suggesting that it is due to the 4GB of RAM. The 5400rpm storage drive also means slower boot and app loading times. Furthermore, while many thought the keyboard feels good, the right half-sized shift key is said to be rather annoying. Lastly, the screen is only HD at 1366 x 768, and not Full-HD. All-in-all, the Lenovo Flex 4 80SA0000US is held back slightly by its slower hard drive and 4GB of RAM, but both of these are upgradable.

The Lenovo Flex 4 80SA0000US is a budget 2-in-1 laptop that packs a decent performance for the everyday person. Its basic Intel Pentium dual-core 4405U processor delivers a reliable performance for basic tasks, with many users seemingly having a pleasant experience with carrying out basic tasks such as word processing, watching videos or web browsing.

Hardware intensive apps and heavy multitasking forces the slim DDR4 4GB of RAM to quickly reach its limits fairly quickly, however, and its 500GB 5400rpm SATA hard drive is also rather slow, meaning longer boot and app loading times. The laptop is lightweight, weighing in at 4.5lbs and users enjoy its versatility thanks to the 2-in-1 360-degree flip-and-fold design, offering you the convenience of both a laptop and tablet.

The keyboard received mixed reviews. Some users liked the feedback of the keys, but it seems almost everyone disliked the placement of right, half-sized shift key. The Flex 4’s screen resolution of 1366 x 768 is rather disappointing since most new laptops have a Full-HD 1080p screen. On top of this, it is a TN display panel, impacting the color of the display, making it looked washed out at times.

It comes with two USB 3.0 ports, one USB 2.0 port and one HDMI port. The Lenovo Flex 4 80SA0000US is well suited to college students or for schools kids, and the 8.5 hour battery is plenty for all day use.


  • Good quality keyboard
  • Lightweight
  • Good at basic task handling
  • Build quality
  • Versatile
  • Touchscreen


  • Lags with resource heavy tasks
  • 5400rpm HDD
  • 4GB of RAM is limiting

Bottom Line

You can expect slow loading and boot up times with Lenovo Flex 4 80SA0000US, but it makes light work of basic tasks and is well suited to college students and school kids.

Mixed Reviews
(as of 22-07-2021 04:56 -07:00) Details
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Full Specifications

Processor Intel Pentium 4405U 2.1GHz [View Benchmarks]
Graphics Intel HD Graphics 510 [View Benchmarks]
Graphics TypeIntegrated
Graphics Memory shared
Operating System Microsoft Windows Windows 10 Home
Weight4.5 lbs
Battery Life8.5 hours
Hard Drive 1500 HDD 5400
Display Size14 inch
Display Resolution1366 x 768
Display TechnologyLED backlight
Connectivity2 x USB 3.0 | 1x USB 2.0 | HDMI | Bluetooth | Wi-Fi
Additional Features4-in-1 multi-media reader(SD, MultiMediaCard, SDHC and SDXC )
Dimension (LxWxH)13.4 x 10 x 0.8
Warranty1 year
Manufacturer Website

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