The Logitech K840 is decent for office use. It's a basic keyboard that's aimed for office use for those who prefer mechanical switches, so it doesn't have the extra gaming features that you normally find on higher-end mechanical options. It lacks any backlighting, and you can only reprogram a few function keys to a preset list of commands. Still, the proprietary Romer-G tactile switches are light to press and offer a good typing experience. Even though it doesn't have a wrist rest, typing feels comfortable, and you shouldn't feel tired after long sessions.
Our Verdict
The Logitech K840 is okay for gaming. While the Romer-G tactile switches are fine for gaming and it has low latency, you can't set macros to any key. There's also no backlighting, and Logitech's software can only save one profile of settings. The rattling of the Spacebar and Shift keys may be annoying for some while gaming.
- Romer-G tactile switches are light to press.
- Very low latency.
- Can't set macros to any key.
- No backlighting.
The Logitech K840 isn't compatible with mobile devices.
The Logitech K840 is decent for office use. The Romer-G switches provide good tactile feedback and a comfortable typing experience, but if you need extra support for your wrists, it doesn't come with a wrist rest. The keyboard is generally well-built; however, the cheap quality keycaps can gather oil easily and develop shine over time. Also, the printed key legends can fade or chip off with regular use.
- Romer-G tactile switches are light to press.
- One incline setting and keyboard profile isn't very high.
- Doesn't have a wrist rest.
- Cheap-feeling keycaps.
The Logitech K840 is disappointing for programming. Although the typing experience should satisfy most people, the lack of programmable keys and the basic functionality of Logitech's software is inadequate. Its ergonomics are also just okay as it lacks a wrist rest, and there's no backlighting.
- Romer-G tactile switches are light to press.
- One incline setting and keyboard profile isn't very high.
- Can't set macros to any key.
- No backlighting.
- Doesn't have a wrist rest.
The Logitech K840 is bad for home theatre PC use, and it's not intended for this. It can only be connected to devices via wired connection, so you have to place the keyboard close to the TV. Also, it lacks a trackpad and doesn't have backlighting if you want to use it in a dark room.
- No backlighting.
- Wired-only.
Changelog
- Updated Dec 15, 2022: Updated the review to change the product name to Logitech K840.
- Updated Aug 03, 2021: Updated review for accuracy and clarity.
- Updated Mar 31, 2021: Converted to Test Bench 1.0.
- Updated Jan 20, 2020: Review published.
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Differences Between Sizes And Variants
We tested the Logitech K840 with Romer-G tactile switches, and there's no other variant available. If you have this keyboard and it's different from ours, let us know and we'll update the review.
Popular Keyboard Comparisons
The Logitech K840 is an entry-level mechanical keyboard that doesn't have the same features found on other higher-end, more expensive gaming keyboards. It doesn't have backlighting like the Logitech K845, and you can't set macros to any key. It's cheap and it's fairly well-built, so if you need a basic mechanical keyboard, this is a good choice.
Also, see our recommendations for the best mechanical keyboards, the best cheap mechanical keyboards, and the best Logitech keyboards.
The SteelSeries Apex Pro is significantly better than the Logitech K840. The SteelSeries has doubleshot keycaps, which means that the key legends are unlikely to fade or chip with daily use, and it has full RGB backlighting. There's also a fully customizable OLED screen that lets you access various settings. SteelSeries' software is feature-rich, and the omnipoint switches allow you to choose your preferred pre-travel distance.
The Logitech K840 is significantly better than the HyperX Alloy Core RGB. The Logitech has a better build quality thanks to its aluminum plate, and it has mechanical switches that feel light and responsive. The Logitech has software support for customization, but it doesn't have dedicated media keys like the HyperX, and typing noise can be louder if you bottom out the keys.
The HyperX Alloy FPS Pro is much better than the Logitech K840. The HyperX has a significantly better build quality and backlighting, while the Logitech doesn't have backlighting and has cheap pad printed keycaps. The HyperX's Cherry MX Red switches provide a much better typing experience compared to Logitech's Romer-G switches, but the Logitech has software support and programmable keys.
The Logitech G413 is a better keyboard than the Logitech K840. The G413 has backlighting and has some macro programmable keys, even though it's only limited to the function keys. Overall, the Logitech G413 is pretty much the best option.
Test Results
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