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Products
Logitech Signature K650
Logitech K780
Tested using Methodology v1.3.1
Updated Aug 26, 2024 02:29 PM
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Amazon.comTested using Methodology v1.3.1
Updated Mar 14, 2025 02:35 PM
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Amazon.com
ConnectivityWireless
SizeFull-size (100%)
Switch TypeRubber Dome
N-Key Rollover (NKRO)No
Hot-Swappable SwitchesNo
ConnectivityWireless
SizeCompact (96%)
Switch TypeScissor
N-Key Rollover (NKRO)No
Hot-Swappable SwitchesNo
Our Verdict
Logitech Signature K650
Logitech K780
The Logitech K780 is a much better wireless keyboard than the Logitech Signature K650. The K780 supports Bluetooth connections with up to three devices, plus it uses a USB receiver and has a device tray to hold your devices up at a nice angle. It also uses scissor switches that feel more satisfying to type on than the mushy rubber domes on the K650. The K650 has better ergonomic support, and its keycaps are more typical square tiles rather than circles.
Variants
- Signature K650 (Graphite)
- Signature K650 (Off-White)
- K780 (White (Non-Speckled))
- K780 (White (Speckled))
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Graphite
Signature K650
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K780
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Signature K650
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K780
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Finding storeMain Differences forGaming
Gaming
Threshold
Gaming
5.4
4.8
Chord Split
3.8
1.5
Data Transmission
5.4
2.9
Single-Key Latency
7.1
6.2
Multi-Key Latency
6.5
5.6
Typing Quality
6.0
8.0
Full Comparison
Design
Dimensions
Top Picture
Size
Full-size (100%)
Compact (96%)
Height
0.9" (2.3 cm)
0.9" (2.2 cm)
Width
18.0" (45.6 cm)
15.0" (38.0 cm)
Depth
7.6" (19.3 cm)
6.2" (15.8 cm)
Depth With Wrist Rest
N/A
N/A
Weight
1.55 lbs (0.701 kg)
1.96 lbs (0.890 kg)
Build Quality
6.5
7.0
Build Quality Close Up
Keycap Material
ABS
ABS
Ergonomics
7.0
7.0
Side Picture
Curved/Angled
No
No
Split Keyboard
No
No
Key Alignment
Staggered
Staggered
Minimum Incline
2.5°
2.8°
Medium Incline
5.5°
N/A
Maximum Incline
8.5°
N/A
Home Row Height
22.7 mm (0.9")
12.4 mm (0.5")
Hardware Customizability
0.0
0.0
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
Brightness Max
Backlighting
No
No
Brightness Min
RGB
No
No
Per-Key Backlighting
No
No
Effects
No
No
Software Controllable
No
No
Backlight Clarity
0.0
0.0
White Shot
Cable & Connector
Connectivity
Wireless
Wireless
Detachable
No Cable Supplied
No
Length
N/A
N/A
Connector (Keyboard side)
No Cable
No Cable
Wireless Versatility
7.2
9.8
Bluetooth
Yes
Yes
Bluetooth Multi-Device Pairing
No
3
Proprietary Receiver
Yes
Yes
Battery Type
2x AA
2x AAA
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
Media Keys
Dedicated
Non-Dedicated
Trackpad / Trackball
No
No
Scroll Wheel
No
No
Control Knob
No
No
USB Passthrough
No
No
Numpad
Yes
Yes
Windows Key Lock
No
No
Lock Indicator
Caps Lock
No Indicator
In The Box
Bundle Picture
Typing Experience
Typing Quality
6.0
8.0
Key Spacing
19.0 mm (0.748")
19.0 mm (0.748")
Typing Noise
9.1
9.9
Typing Sample
Average Loudness
44.4 dBA
36.2 dBA
High Pitch Clicks
No
No
Switches
Wobble Video
Switch Name
No Marketed Name
No Marketed Name
Switch Type
Rubber Dome
Scissor
Feel
Tactile
Tactile
Analog
No
No
Keystrokes
Key Switch Actuation Graph
Operating Force
58 gf
67 gf
Actuation Force
34 gf
37 gf
Pre-Travel
2.3 mm
1.3 mm
Total Travel
3.4 mm
1.9 mm
Performance
Single-Key Latency
7.1
6.2
Single-Key Latency Graph
Best Connection
15.3 ms
29.1 ms
Best Connection Std Dev
±5.2 ms
±3.3 ms
Wired
N/A
N/A
Receiver
15.3 ms
29.1 ms
Bluetooth
18.8 ms
30.6 ms
PCB (Estimated)
13.3 ms
28.2 ms
Multi-Key Latency
6.5
5.6
Latency Video
Multi-Key Latency Graph
Connection Evaluated
Receiver
Receiver
Key Press
17.0 ms
28.5 ms
Key Release
51.1 ms
46.1 ms
Data Transmission
5.4
2.9
Multi-Key Raw USB
Connection Evaluated
Receiver
Receiver
USB Polling Rate
1,000 Hz
1,000 Hz
Effective Update Rate
143 Hz
63 Hz
N-Key Rollover (NKRO)
No
No
Multiple Keys Per USB Report
No
No
Chord Split
3.8
1.5
Chord Split Graph
4 Chord Split Delay
25.1 ms
60.4 ms
8 Chord Split Delay
N/A
N/A
Software and Operating System
Configuration Software
Software Tour
Software Name
Logi Options+
Logi Options+
Software Windows Compatible
Yes
Yes
Software macOS Compatible
Yes
Yes
Onboard Memory
No
No
Profiles
6+
6+
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
Wireless Mobile Compatibility
10
10
Android
Fully Compatible
Fully Compatible
iOS
Fully Compatible
Fully Compatible
iPadOS
Fully Compatible
Fully Compatible
Media Key Compatibility
Android, iPhone & iPad
Android, iPhone & iPad
Check Price
Graphite
Signature K650
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K780
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Signature K650
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Finding storeWhite (Speckled)
K780
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Finding store
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Logitech Signature K650
Logitech K780
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Logitech K780 vs Logitech Signature K650: Main Discussion
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