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Logitech K840 vs Logitech K845
Side-by-Side Comparison
Products
Logitech K840
Logitech K845
Tested using Methodology v1.0
Updated Dec 16, 2022 10:11 PM
SEE PRICE
Amazon.comTested using Methodology v1.2
Updated Jun 21, 2023 02:44 PM
SEE PRICE
Amazon.com
ConnectivityWired
SizeFull-size (100%)
MechanicalYes
ConnectivityWired
SizeFull-size (100%)
Switch TypeMechanical
Variants
- K840 (Black/Gray)
- Logitech K845 (Black/Gray)
Our Verdict
Logitech K840
Logitech K845
The Logitech K840 and the Logitech K845 are both decent office keyboards. The K845 feels better built, its Cherry MX Blue switches require a bit more force to actuate, and it has backlighting. However, our K840 unit is fully compatible with macOS, and while it has customization software, there aren't many options.
Notice: Two or more of the products selected have been tested with different test methodologies, so some of the results below aren't directly comparable. Learn how our test benches and scoring system work, and read more about the latest changes to our keyboards test methodology.
Main Differences for
Threshold
Gaming
6.9
7.9
Backlighting
0.0
6.5
Latency
10
6.8
Pre-Travel
1.6 mm
2.2 mm
Software & Programming
3.8
0.0
Build Quality
7.0
8.0
Keyboard Compatibility
7.8
10
Full Comparison
Design
Dimensions
Top Picture
Size
Full-size (100%)
Full-size (100%)
Height
1.3" (3.4 cm)
1.4" (3.6 cm)
Width
17.5" (44.5 cm)
17.1" (43.5 cm)
Depth
5.2" (13.2 cm)
5.0" (12.7 cm)
Depth With Wrist Rest
N/A
N/A
Weight
2.01 lbs (0.910 kg)
1.75 lbs (0.794 kg)
Build Quality
7.0
8.0
Build Quality Close Up
Keycap Material
ABS
ABS
Ergonomics
6.5
6.0
Side Picture
Curved/Angled
Straight
No
Split Keyboard
No
Key Alignment
Staggered
Minimum Incline
2°
4°
Medium Incline
N/A
N/A
Maximum Incline
9°
8°
Home Row Height
28.5 mm (1.1")
Wrist Rest
No
Hardware Customizability
6.0
Customizability Overview
Replaceable Cherry Stabilizers
Yes
Stabilizer Fixation
Plate-Mounted
Spacebar Stabilizer Size
6.25u
Size Of Right Mod Keys
1.25u
Hot-Swappable Switches
No
Switch Stem Shape
Cherry MX Style
Switch PCB Socket
Soldered
North-Facing Cherry MX Interference
Yes
Backlight Features
0.0
6.5
Backlighting Picture
Brightness Max
Backlighting
No
Yes
Brightness Min
White Shot
RGB
No
Per-Key Backlighting
No
Yes
Effects
No
Yes
Software Controllable
No
No
Color
No Backlighting
Color Mixing
No Backlighting
Backlight Clarity
9.0
White Shot
Cable & Connector
Connectivity
Wired
Wired
Detachable
No
No
Length
5.9 ft (1.8 m)
5.9 ft (1.8 m)
Connector (Keyboard side)
Not Detachable
Not Detachable
Wireless Versatility
0.0
0.0
Bluetooth
No
No
Bluetooth Multi-Device Pairing
No
No
Proprietary Receiver
No
No
Battery Type
No Batteries
No Batteries
Macro Keys And Programming
0.0
Dedicated Macro Keys Count
0
Onboard Macro Programming
No
Macro Programming With Software
No
Extra Features
Extra Features
Media Keys
Hot Keys
Non-Dedicated
Trackpad / Trackball
No
No
Scroll Wheel
No
No
Control Knob
No
USB Passthrough
No
No
Numpad
Yes
Yes
Windows Key Lock
Yes
Yes
Lock Indicator
Caps Lock
Caps, Scroll & Num lock
Macro Programmable Keys
No
In The Box
Bundle Picture
Typing Experience
Switches
Wobble Video
Switch Name
Romer-G Tactile
Cherry MX Blue
Switch Type
Mechanical
Feel
Tactile
Clicky
Keystrokes
Key Switch Actuation Graph
Key Switches
Romer-G Tactile
Cherry MX Blue
Mechanical
Yes
Feel
Tactile
Clicky
Operating Force
49 gf
54 gf
Actuation Force
44 gf
45 gf
Pre-Travel
1.6 mm
2.2 mm
Total Travel
3.4 mm
4.0 mm
Typing Quality
7.5
8.0
Typing Noise
9.0
4.1
Typing Sample
Average Loudness
56.8 dBA
High Pitch Clicks
Yes
Noise
Quiet
Latency
10
6.8
Latency Video
Latency Wired
2.1 ms
18.9 ms
Latency Receiver
N/A
N/A
Latency Bluetooth
N/A
N/A
Software and Operating System
Configuration Software
Software Picture
Software Tour
Software Name
Logitech Options
No Software
Software Windows Compatible
Yes
No
Software macOS Compatible
Yes
No
Onboard Memory
No
No
Profiles
No Profile
No Profile
Account Required
No
Cloud Sync
Yes
Macro Programming
No
Ease Of Use
Easy
Computer Compatibility
7.8
10
Windows
Full
Fully Compatible
macOS
Full
Fully Compatible
Linux (Ubuntu 22)
Partial
Fully Compatible
Media Key Compatibility
Windows, MacOS & Linux
Android
No
Not Compatible
iOS
No
Not Compatible
iPadOS
No
Not Compatible
Wireless Mobile Compatibility
0.0
Android
No
Not Compatible
iOS
No
Not Compatible
iPadOS
No
Not Compatible
Media Key Compatibility
Not Compatible
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Logitech K840
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Logitech K840 vs Logitech K845: Main Discussion
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