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  1. Home
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Logitech G515 LIGHTSPEED TKL vs G915 X LIGHTSPEED

Which Keyboard Is Better?

    Top
    Main Differences
    Design
      DimensionsBuild QualityErgonomicsHardware CustomizabilityBacklight FeaturesBacklight ClarityCable & ConnectorWireless VersatilityMacro Keys And ProgrammingExtra FeaturesIn The Box
    Typing Experience
      Typing QualityTyping NoiseKeystrokesAdjustable Input GranularitySwitches
    Performance
      Single-Key LatencyMulti-Key LatencyData TransmissionChord Split
    Software and Operating System
      Configuration SoftwareComputer CompatibilityWireless Mobile Compatibility
    Comments

Products

Logitech G515 LIGHTSPEED TKL
Logitech G915 X LIGHTSPEED

Tested using Methodology v1.4.3

Updated Jan 14, 2026 05:35 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.4.3

Updated Jan 14, 2026 05:37 PM

SEE PRICE
Amazon.com
Logitech G515 LIGHTSPEED TKL Picture
Logitech G915 X LIGHTSPEED Picture
ConnectivityWireless
Size
TenKeyLess (80%)
Switch Type
Mechanical
Output Type
Non-Adjustable
Hot-Swappable Switches
No
ConnectivityWireless
Size
Full-size (100%)
Switch Type
Mechanical
Output Type
Non-Adjustable
Hot-Swappable Switches
No
  1. Recommended in 1 article:
  2. Logitech

Our Verdict

Logitech G515 LIGHTSPEED TKL

Logitech G915 X LIGHTSPEED

The Logitech G515 LIGHTSPEED TKL and the Logitech G915 X LIGHTSPEED are low-profile wireless mechanical gaming keyboards that offer very similar raw gaming performance. The G515 LIGHTSPEED TKL has a smaller tenkeyless layout, while the G915 X LIGHTSPEED is a bigger full-size model. The G915 X LIGHTSPEED also has nine dedicated macro keys and a full set of dedicated media controls, which the G515 lacks.

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Variants

  • G515 LIGHTSPEED TKL (Black)
  • G515 LIGHTSPEED TKL (White)
  • G915 X LIGHTSPEED (Black)
  • G915 X LIGHTSPEED TKL (Black)

Review

See Logitech G515 LIGHTSPEED TKL Review
See Logitech G915 X LIGHTSPEED Review
9 
3 

Check Price

Black
G515 LIGHTSPEED TKL
SEE PRICE
Amazon.com
Black
G915 X LIGHTSPEED
SEE PRICE
Amazon.com
White
G515 LIGHTSPEED TKL
SEE PRICE
Amazon.com
Black
G915 X LIGHTSPEED TKL
SEE PRICE
Amazon.com
 
White
G915 X LIGHTSPEED
SEE PRICE
Amazon.com
 
White
G915 X LIGHTSPEED TKL
SEE PRICE
Amazon.com

Main Differences for
Gaming

Threshold 

0.10

Gaming 
 

8.6
8.6
No major differences between these keyboards for gaming. See full list of tests below.

Full Comparison

Design

Dimensions 
 

Top Picture 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Top Picture
Compare High-Res
Logitech G915 X LIGHTSPEED Top Picture

Size 
 

TenKeyLess (80%)
Full-size (100%)

Height 
 

0.8" (2.2 cm)
0.7" (1.8 cm)

Width  

14.0" (35.5 cm)
18.6" (47.3 cm)

Depth 
 

5.8" (14.6 cm)
5.8" (14.8 cm)

Depth With Wrist Rest 
 

N/A
N/A

Weight 
 

1.93 lbs (0.874 kg)
3.84 lbs (1.740 kg)
Show Text 

Build Quality 
 

8.0
8.5

Build Quality Close Up 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Build Quality Close Up
Compare High-Res
Logitech G915 X LIGHTSPEED Build Quality Close Up

Keycap Material  

PBT
PBT
Show Text 

Ergonomics 
 

7.0
7.0

Side Picture 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Side Picture
Compare High-Res
Logitech G915 X LIGHTSPEED Side Picture

Curved/Angled 
 

No
No

Split Keyboard 
 

No
No

Key Alignment 
 

Staggered
Staggered

Minimum Incline 
 

2.5°
0°

Medium Incline 
 

4°
3.5°

Maximum Incline 
 

8°
7.2°

Home Row Height 
 

21.2 mm (0.8")
21.5 mm (0.8")
Show Text 

Hardware Customizability 
 

5.5
6.2

Customizability Overview 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Customizability Overview
Compare High-Res
Logitech G915 X LIGHTSPEED Customizability Overview

Replaceable Cherry Stabilizers 
 

Yes
Yes

Stabilizer Fixation 
 

Plate-Mounted
Plate-Mounted

Spacebar Stabilizer Size 
 

6.25u
6.25u

Size Of Right Mod Keys 
 

1.25u
1.25u

Hot-Swappable Switches 
 

No
No

Switch Stem Shape 
 

Low Profile Cherry MX Style
Low Profile Cherry MX Style

Mechanical Switch Compatibility 
 

Soldered
Soldered

Magnetic Switch Compatibility 
 

No Magnetic Switch Support
No Magnetic Switch Support

North-Facing Cherry MX Interference 
 

Yes
No
Show Text 

Backlight Features 
 

10
10

Backlighting Picture 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Backlighting Picture
Compare High-Res
Logitech G915 X LIGHTSPEED Backlighting Picture

Brightness Max 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Brightness Max
Compare High-Res
Logitech G915 X LIGHTSPEED Brightness Max

Backlighting  

Yes
Yes

Brightness Min 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Brightness Min
Compare High-Res
Logitech G915 X LIGHTSPEED Brightness Min

RGB 
 

Yes
Yes

Per-Key Backlighting 
 

Yes
Yes

Effects 
 

Yes
Yes

Software Controllable 
 

Yes
Yes
Show Text 

Backlight Clarity 
 

8.0
8.0

White Shot 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL White Shot
Compare High-Res
Logitech G915 X LIGHTSPEED White Shot
Show Text 

Cable & Connector  

Connectivity  

Wireless
Wireless

Detachable 
 

Yes (Wired Mode and Charge)
Yes (Wired Mode and Charge)

Length  

6.1 ft (1.9 m)
5.9 ft (1.8 m)

Connector (Keyboard side) 
 

USB type-C
USB type-C
Show Text 

Wireless Versatility 
 

7.5
7.5

Bluetooth 
 

Yes
Yes

Bluetooth Multi-Device Pairing 
 

No
No

Proprietary Receiver 
 

Yes
Yes

Battery Type 
 

Rechargeable
Rechargeable
Show Text 

Macro Keys And Programming 
 

4.0
7.6

Dedicated Macro Keys Count  

0
9

Onboard Macro Programming 
 

No
No

Macro Programming With Software 
 

Yes
Yes
Show Text 

Extra Features 
 

Extra Features 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Extra Features
Compare High-Res
Logitech G915 X LIGHTSPEED Extra Features

Media Keys 
 

Non-Dedicated
Dedicated

Trackpad / Trackball  

No
No

Scroll Wheel 
 

No
Yes

Control Knob 
 

No
No

USB Passthrough 
 

No
No

Numpad  

No
Yes

Windows Key Lock 
 

Yes
Yes

Lock Indicator  

Caps Lock
Caps Lock
Show Text 

In The Box  

Bundle Picture 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Bundle Picture
Compare High-Res
Logitech G915 X LIGHTSPEED Bundle Picture
Show Text 
Typing Experience

Typing Quality 
 

8.0
7.0

Key Spacing 
 

19.0 mm (0.748")
19.0 mm (0.748")
Show Text 

Typing Noise 
 

9.0
7.6

Typing Sample  

Average Loudness 
 

44.9 dBA
51.9 dBA

High Pitch Clicks 
 

No
No
Show Text 

Keystrokes 
 

Key Switch Actuation Graph  

 Preview Graph
Logitech G515 LIGHTSPEED TKL Key Switch Actuation Graph
 Preview Graph
Logitech G915 X LIGHTSPEED Key Switch Actuation Graph
 Compare in Graph Tool

Initial Force 
 

43 gf
46 gf

Peak Tactile Force 
 

50 gf
51 gf

Actuation Force 
 

46 gf
45 gf

Bottom-Out Force 
 

69 gf
68 gf

Pre-Travel Distance 
 

1.3 mm
1.4 mm

Total Travel Distance 
 

3.1 mm
3.1 mm
Show Text 

Adjustable Input Granularity 
 

0.0
0.0

Input Linearity Graph  

 Preview Graph
Logitech G515 LIGHTSPEED TKL Input Linearity Graph
 Preview Graph
Logitech G915 X LIGHTSPEED Input Linearity Graph
 Compare in Graph Tool

Analog Output Graph  

Logitech G515 LIGHTSPEED TKL Analog Output Graph
Logitech G915 X LIGHTSPEED Analog Output Graph
 Compare in Graph Tool

Top Deadzone 
 

N/A
N/A

Bottom Deadzone 
 

N/A
N/A

Detection Ratio 
 

N/A
N/A

Minimum Step Depth 
 

N/A
N/A

Switches 
 

Wobble Video  

Switch Name 
 

GL Tactile
GL Tactile

Switch Type 
 

Mechanical
Mechanical

Feel 
 

Tactile
Tactile

Output Type 
 

Non-Adjustable
Non-Adjustable
Show Text 
Performance

Single-Key Latency 
 

9.1
9.0

Single-Key Latency Graph  

 Preview Graph
Logitech G515 LIGHTSPEED TKL Single-Key Latency Graph
 Preview Graph
Logitech G915 X LIGHTSPEED Single-Key Latency Graph
 Compare in Graph Tool

Best Connection 
 

3.3 ms
3.5 ms

Best Connection Std Dev  

±0.3 ms
±0.9 ms

Wired 
 

3.3 ms
3.5 ms

Receiver 
 

3.6 ms
4.5 ms

Bluetooth 
 

14.0 ms
19.3 ms

PCB (Estimated) 
 

2.2 ms
2.3 ms
Show Text 

Multi-Key Latency 
 

8.9
8.9

Multi-Key Latency Graph  

 Preview Graph
Logitech G515 LIGHTSPEED TKL Multi-Key Latency Graph
 Preview Graph
Logitech G915 X LIGHTSPEED Multi-Key Latency Graph
 Compare in Graph Tool

Connection Evaluated  

Receiver
Receiver

Key Press 
 

3.6 ms
3.7 ms
Show Text 

Data Transmission 
 

8.2
8.7

Multi-Key Raw USB 
 

Compare High-Res
Logitech G515 LIGHTSPEED TKL Multi-Key Raw USB
Compare High-Res
Logitech G915 X LIGHTSPEED Multi-Key Raw USB

Connection Evaluated  

Receiver
Wired

USB Polling Rate 
 

1,000 Hz
1,000 Hz

Effective Update Rate 
 

1,000 Hz
1,000 Hz

N-Key Rollover (NKRO) 
 

Yes
Yes

Multiple Keys Per USB Report 
 

No
Yes
Show Text 

Chord Split 
 

7.5
7.6

Chord Split Graph  

 Preview Graph
Logitech G515 LIGHTSPEED TKL Chord Split Graph
 Preview Graph
Logitech G915 X LIGHTSPEED Chord Split Graph
 Compare in Graph Tool

4 Chord Split Delay 
 

6.3 ms
6.5 ms

8 Chord Split Delay 
 

15.3 ms
10.9 ms
Show Text 
Software and Operating System

Configuration Software 
 

Software Tour  

Software Name  

Logitech G HUB
Logitech G HUB

Software Windows Compatible 
 

Yes
Yes

Software macOS Compatible 
 

Yes
Yes

Onboard Memory 
 

Yes
Yes

Profiles 
 

6+
6+
Show Text 

Computer Compatibility 
 

10
10

Windows 
 

Fully Compatible
Fully Compatible

macOS 
 

Fully Compatible
Fully Compatible

Linux 
 

Fully Compatible
Fully Compatible

Media Key Compatibility 
 

Windows, MacOS & Linux
Windows, MacOS & Linux
Show Text 

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
Show Text 

Check Price

Black
G515 LIGHTSPEED TKL
SEE PRICE
Amazon.com
Black
G915 X LIGHTSPEED
SEE PRICE
Amazon.com
White
G515 LIGHTSPEED TKL
SEE PRICE
Amazon.com
Black
G915 X LIGHTSPEED TKL
SEE PRICE
Amazon.com
 
White
G915 X LIGHTSPEED
SEE PRICE
Amazon.com
 
White
G915 X LIGHTSPEED TKL
SEE PRICE
Amazon.com
Back to Top

Logitech G515 LIGHTSPEED TKL

Logitech G915 X LIGHTSPEED

Comments

  1. Comparison
 • Posted 1 year ago

Logitech G515 LIGHTSPEED TKL vs Logitech G915 X LIGHTSPEED: Main Discussion

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