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  1. Home
  2. Keyboard
  3. Compare
  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Dimensions
    2. Build Quality
    3. Ergonomics
    4. Hardware Customizability
    5. Backlight Features
    6. Backlight Clarity
    7. Cable & Connector
    8. Wireless Versatility
    9. Macro Keys And Programming
    10. Extra Features
    11. In The Box
  5. Typing Experience
    1. Typing Quality
    2. Typing Noise
    3. Switches
    4. Keystrokes
    5. Latency
  6. Performance
    1. Single-Key Latency
    2. Multi-Key Latency
    3. Data Transmission
    4. Chord Split
  7. Software and Operating System
    1. Configuration Software
    2. Computer Compatibility
    3. Wireless Mobile Compatibility
  8. Comments

Logitech K780 vs Logitech K400 Plus

Side-by-Side Comparison

Products

Logitech K780
Logitech K400 Plus

Tested using Methodology v1.3.1

Updated Mar 14, 2025 02:35 PM

SEE PRICE
BestBuy.com

Tested using Methodology v1.2

Updated Feb 27, 2024 06:08 PM

SEE PRICE
BestBuy.com
Logitech K780 Picture
Logitech K400 Plus Picture
ConnectivityWireless
Size
Compact (96%)
Switch Type
Scissor
N-Key Rollover (NKRO)
No
Hot-Swappable Switches
No
ConnectivityWireless
Size
TenKeyLess (80%)
Switch Type
Rubber Dome
Hot-Swappable Switches
No
  1. Recommended in 1 article:
  2. iPad

Variants

  • K780 (White (Non-Speckled))
  • K780 (White (Speckled))
  • K400 Plus (Black)
  • K400 Plus (White)

Review

See Logitech K780 review

See Logitech K400 Plus review

0
0

Our Verdict

Logitech K780

Logitech K400 Plus

The Logitech K780 is overall a better keyboard than the Logitech K400 Plus. Unlike the K400, the K780 can pair with up to three devices at once via Bluetooth. The K780 also features a built-in stand for phones or tablets, making it the better choice for typing on a mobile device. On the other hand, the K400 Plus is better for a home theater setup thanks to its integrated trackpad and is designed to be used on your lap.

0

Check Price

White (Non-Speckled)
K780
SEE PRICE
BestBuy.com
Black
K400 Plus
SEE PRICE
BestBuy.com
White (Speckled)
K780
SEE PRICE
Amazon.com
White
K400 Plus
SEE PRICE
Amazon.com

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 

0.10

Gaming 

4.8
6.0

Pre-Travel 
 

1.3 mm
2.0 mm

Build Quality 
 

7.0
6.0

Single-Key Latency 
 

6.2
6.9

Operating Force 
 

67 gf
65 gf

Full Comparison

Design

Dimensions 
 

Top Picture  

Logitech K780 Top Picture
Logitech K400 Plus Top Picture

Size 
 

Compact (96%)
TenKeyLess (80%)

Height 
 

0.9" (2.2 cm)
0.9" (2.2 cm)

Width  

15.0" (38.0 cm)
14.0" (35.5 cm)

Depth 
 

6.2" (15.8 cm)
5.5" (13.9 cm)

Depth With Wrist Rest 
 

N/A
N/A

Weight 
 

1.96 lbs (0.890 kg)
0.88 lbs (0.400 kg)

Show text

Build Quality 
 

7.0
6.0

Build Quality Close Up  

Logitech K780 Build Quality Close Up
Logitech K400 Plus Build Quality Close Up

Keycap Material  

ABS
ABS

Show text

Ergonomics 
 

7.0
7.0

Side Picture  

Logitech K780 Side Picture
Logitech K400 Plus Side Picture

Curved/Angled 
 

No
No

Split Keyboard 
 

No
No

Key Alignment 
 

Staggered
Staggered

Minimum Incline 
 

2.8°
3°

Medium Incline 
 

N/A
N/A

Maximum Incline 
 

N/A
N/A

Home Row Height 
 

12.4 mm (0.5")
17.9 mm (0.7")

Show text

Hardware Customizability 
 

0.0
0.0

Customizability Overview  

Logitech K780 Customizability Overview
Logitech K400 Plus Customizability Overview

Replaceable Cherry Stabilizers 
 

No
No

Stabilizer Fixation 
 

Non-Customizable Design
Non-Customizable Design

Spacebar Stabilizer Size 
 

Non-Customizable Design
Non-Customizable Design

Size Of Right Mod Keys 
 

Non-Standard
Non-Standard

Hot-Swappable Switches 
 

No
No

Switch Stem Shape 
 

Non-Customizable Design
Non-Customizable Design

Switch PCB Socket 
 

Non-Customizable Design
Non-Customizable Design

North-Facing Cherry MX Interference 
 

Non-Customizable Design
Non-Customizable Design

Backlight Features 
 

0.0
0.0

Backlighting Picture  

Logitech K780 Backlighting Picture
Logitech K400 Plus Backlighting Picture

Brightness Max  

Logitech K780 Brightness Max
Logitech K400 Plus Brightness Max

Backlighting  

No
No

Brightness Min  

Logitech K780 Brightness Min
Logitech K400 Plus Brightness Min

RGB 
 

No
No

Per-Key Backlighting 
 

No
No

Effects 
 

No
No

Software Controllable 
 

No
No

Show text

Backlight Clarity 
 

0.0
0.0

White Shot  

Logitech K780 White Shot
Logitech K400 Plus White Shot

Cable & Connector  

Connectivity  

Wireless
Wireless

Detachable 
 

No
No

Length  

N/A
N/A

Connector (Keyboard side) 
 

No Cable
No Cable

Show text

Wireless Versatility 
 

9.8
0.9

Bluetooth 
 

Yes
No

Bluetooth Multi-Device Pairing 
 

3
No

Proprietary Receiver 
 

Yes
Yes

Battery Type 
 

2x AAA
2x AA

Show text

Macro Keys And Programming 
 

0.0
0.0

Dedicated Macro Keys Count  

0
0

Onboard Macro Programming 
 

No
No

Macro Programming With Software 
 

No
No

Extra Features 
 

Extra Features  

Logitech K780 Extra Features
Logitech K400 Plus Extra Features

Media Keys 
 

Non-Dedicated
Non-Dedicated

Trackpad / Trackball  

No
Yes

Scroll Wheel 
 

No
No

Control Knob 
 

No
No

USB Passthrough 
 

No
No

Numpad  

Yes
No

Windows Key Lock 
 

No
No

Lock Indicator  

No Indicator
No Indicator

Show text

In The Box  

Bundle Picture  

Logitech K780 Bundle Picture
Logitech K400 Plus Bundle Picture

Show text

Typing Experience

Typing Quality 
 

8.0
6.5

Key Spacing 
 

19.0 mm (0.748")

Show text

Typing Noise 
 

9.9
9.3

Typing Sample  

Average Loudness 
 

36.2 dBA
42.7 dBA

High Pitch Clicks 
 

No
No

Show text

Switches 
 

Wobble Video  

Switch Name 
 

No Marketed Name
No Marketed Name

Switch Type 
 

Scissor
Rubber Dome

Feel 
 

Tactile
Tactile

Analog 
 

No

Keystrokes 
 

Key Switch Actuation Graph  

See details on graph tool
See details on graph tool

Operating Force 
 

67 gf
65 gf

Actuation Force 
 

37 gf
41 gf

Pre-Travel 
 

1.3 mm
2.0 mm

Total Travel 
 

1.9 mm
2.9 mm

Show text

Latency 
 

6.2
6.9

Latency Video  

Latency Wired 
 

N/A
N/A

Latency Receiver 
 

29.1 ms
16.7 ms

Latency Bluetooth 
 

30.6 ms
N/A

Show text

Performance

Single-Key Latency 
 

6.2
6.9

Single-Key Latency Graph  

See details on graph tool

Best Connection 
 

29.1 ms

Best Connection Std Dev  

±3.3 ms

Wired 
 

N/A
N/A

Receiver 
 

29.1 ms
16.7 ms

Bluetooth 
 

30.6 ms
N/A

PCB (Estimated) 
 

28.2 ms

Show text

Multi-Key Latency 
 

5.6

Latency Video  

Multi-Key Latency Graph  

See details on graph tool

Connection Evaluated  

Receiver

Key Press 
 

28.5 ms

Key Release 
 

46.1 ms

Data Transmission 
 

2.9

Multi-Key Raw USB  

Logitech K780 Multi-Key Raw USB

Connection Evaluated  

Receiver

USB Polling Rate 
 

1,000 Hz

Effective Update Rate 
 

63 Hz

N-Key Rollover (NKRO) 
 

No

Multiple Keys Per USB Report 
 

No

Chord Split 
 

1.5

Chord Split Graph  

See details on graph tool

4 Chord Split Delay 
 

60.4 ms

8 Chord Split Delay 
 

N/A
Software and Operating System

Configuration Software 
 

Software Tour  

Software Name  

Logi Options+
Logitech Options

Software Windows Compatible 
 

Yes
Yes

Software macOS Compatible 
 

Yes
Yes

Onboard Memory 
 

No
No

Profiles 
 

6+
No Profile

Show text

Computer Compatibility 
 

10
10

Windows 
 

Fully Compatible
Fully Compatible

macOS 
 

Fully Compatible
Fully Compatible

Linux (Ubuntu 22) 
 

Fully Compatible
Fully Compatible

Media Key Compatibility 
 

Windows, MacOS & Linux
Windows, MacOS & Linux

Show text

Wireless Mobile Compatibility 
 

10
0.0

Android 
 

Fully Compatible
Not Compatible

iOS 
 

Fully Compatible
Not Compatible

iPadOS 
 

Fully Compatible
Not Compatible

Media Key Compatibility 
 

Android, iPhone & iPad
Not Compatible

Show text

Check Price

White (Non-Speckled)
K780
SEE PRICE
BestBuy.com
Black
K400 Plus
SEE PRICE
BestBuy.com
White (Speckled)
K780
SEE PRICE
Amazon.com
White
K400 Plus
SEE PRICE
Amazon.com
Back to Top

Logitech K780

Logitech K400 Plus

Comments

  1. Comparison
 • Posted 1 year ago

Logitech K780 vs Logitech K400 Plus: Main Discussion

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