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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Shape
    3. Portability
    4. Build Quality
    5. Weight
    6. Hand Size Recommendation
    7. Wireless Versatility
    8. Palm Grip: Hand Size Recommendation
    9. Cable
    10. Claw Grip: Hand Size Recommendation
    11. Fingertip Grip: Hand Size Recommendation
    12. Mouse Feet
    13. In The Box
  5. Control
    1. Main Button
    2. Additional Buttons
    3. Click Latency
    4. CPI
    5. Sensor Latency
    6. Sensor Specifications
    7. Mouse Wheel
    8. Noise
  6. Operating System And Software
    1. Configuration Software
    2. Mouse Compatibility
  7. Comments

Logitech G305 LIGHTSPEED vs Logitech G603 LIGHTSPEED

Side-by-Side Comparison

Products

Logitech G305 LIGHTSPEED
Logitech G603 LIGHTSPEED

Tested using Methodology v1.5

Updated Jan 27, 2025 06:51 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.3

Updated Dec 15, 2022 05:39 PM

Amazon.com
Logitech G305 LIGHTSPEED Picture
Logitech G603 LIGHTSPEED Picture

Variants

  • G305 (Black)
  • G305 (Blue)
  • G305 (KDA)
  • G305 (Lilac)
  • G305 (White)
  • G603 LIGHTSPEED (Black/Gray)

Our Verdict

Logitech G305 LIGHTSPEED

Logitech G603 LIGHTSPEED

The Logitech G603 LIGHTSPEED is better than the Logitech G305 LIGHTSPEED. The G603 feels better built and is better suited for any hand-size with a palm grip. It also has Bluetooth support. On the other hand, the G305 is lighter and has a marginally lower click latency.

0

Check Price

Black/Gray
G603 LIGHTSPEED
Amazon.com
Black/Gray
G603 LIGHTSPEED
B&H
Black/Gray
G603 LIGHTSPEED
BestBuy.com
Black/Gray
G603 LIGHTSPEED
Walmart.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 mice test methodology.

Main Differences for

Threshold 

0.10

Work 

7.0
7.8

Wireless Versatility 
 

6.8
9.1

Build Quality 
 

8.0
8.5

Full Comparison

Design

Style  

Style Picture  

Logitech G305 LIGHTSPEED Style Picture
Logitech G603 LIGHTSPEED Style Picture

Type 
 

Standard
Standard

Coating 
 

Matte
Matte

Lighting Color  

No Lighting
No Lighting

Show text

Shape  

3D Model  

Logitech G305 LIGHTSPEED 3D Model
Logitech G603 LIGHTSPEED 3D Model

Length  

4.6" (116 mm)
4.9" (125 mm)

Width  

2.5" (63 mm)
2.6" (65 mm)

Height  

1.5" (38 mm)
1.7" (43 mm)

Grip Width 
 

61 mm
62 mm

Ambidextrous 
 

Shape Only
No

Left-Handed Friendly 
 

Yes
No

Finger Rest 
 

No
No

Show text

Portability 
 

7.8
7.5

Portability picture  

Logitech G305 LIGHTSPEED Portability picture
Logitech G603 LIGHTSPEED Portability picture

Box Volume 
 

16.96 in³ (278 cm³)
21.42 in³ (351 cm³)

Receiver Storing 
 

Yes
Yes

Show text

Build Quality 
 

8.0
8.5

Build quality picture  

Logitech G305 LIGHTSPEED Build quality picture
Logitech G603 LIGHTSPEED Build quality picture

Show text

Weight 
 

7.3
6.2

Minimum Weight Picture  

Logitech G305 LIGHTSPEED Minimum Weight Picture
Logitech G603 LIGHTSPEED Minimum Weight Picture

Lowest Weight 
 

82.3 g
96.7 g

Default Weight 
 

101.7 g
144.3 g

Weight Distribution 
 

Back-heavy
Back-heavy

Extra Weights 
 

No
No

Show text

Hand Size Recommendation 
 

Palm Grip Hand Recommendation 
 

Logitech G305 LIGHTSPEED Palm Grip Hand Recommendation

Claw Grip Hand Recommendation 
 

Logitech G305 LIGHTSPEED Claw Grip Hand Recommendation

Fingertip Grip Hand Recommendation 
 

Logitech G305 LIGHTSPEED Fingertip Grip Hand Recommendation

Left-Handed Friendly 
 

Yes
No

Ambidextrous 
 

Shape Only
No

Coating 
 

Matte
Matte

Finger Rest 
 

No
No

Show text

Wireless Versatility 
 

6.8
9.1

Maximum Of Paired Devices 
 

1
2

Bluetooth 
 

No
Yes

Receiver 
 

Yes
Yes

Battery Type 
 

1x AA
2x AA

Use When Charging 
 

No ( Single use batteries)
No ( Single use batteries)

On/Off Activation 
 

Auto Off And On/Off Switch
Auto Off And On/Off Switch

Receiver Extender 
 

Yes
Yes

Battery Indicator  

Yes
Yes

Show text

Palm Grip: Hand Size Recommendation 
 

Palm Grip Picture  

Logitech G603 LIGHTSPEED Palm Grip Picture

Small Hand 
 

Yes

Medium Hand 
 

Yes

Large Hand 
 

Yes

X.Large Hand 
 

Yes

Show text

Cable 
 

0.0
0.0

Cable Video  

Connectivity  

Wireless
Wireless

Cable Length 
 

N/A
N/A

Cable Type 
 

No Cable
No Cable

Permanent Kink 
 

No
No

Port Type: Mouse End 
 

No Port
No Port

Port Type: PC End 
 

No Port
No Port

Show text

Claw Grip: Hand Size Recommendation 
 

Claw Grip Picture  

Logitech G603 LIGHTSPEED Claw Grip Picture

Small Hand 
 

No

Medium Hand 
 

Yes

Large Hand 
 

Yes

X.Large Hand 
 

Yes

Show text

Fingertip Grip: Hand Size Recommendation  
 

Fingertip Grip Picture  

Logitech G603 LIGHTSPEED Fingertip Grip Picture

Small Hand  
 

No

Medium Hand 
 

No

Large Hand 
 

Yes

X.Large Hand  
 

Yes

Show text

Mouse Feet 
 

7.5
7.5

Mouse Feet picture  

Logitech G305 LIGHTSPEED Mouse Feet picture
Logitech G603 LIGHTSPEED Mouse Feet picture

Gliding Experience 
 

Ok
Ok

Material 
 

PTFE
PTFE

Extra Included 
 

No
No

Show text

In The Box 
 

In the box picture  

Logitech G305 LIGHTSPEED In the box picture
Logitech G603 LIGHTSPEED In the box picture

Show text

Control

Main Button 
 

Actuation Graph  

See details on graph tool

Force/Distances Graph  

See details on graph tool

Switch Type 
 

Mechanical

Switch Model 
 

Omron D2FC-F-7N

Show text

Additional Buttons 
 

7.3
7.3

Buttons Picture  

Logitech G305 LIGHTSPEED Buttons Picture
Logitech G603 LIGHTSPEED Buttons Picture

Total Number Of Buttons 
 

6
6

Number Of Side Buttons 
 

2
2

Number Of Programmable Inputs  
 

11
11

Profile Switching Button 
 

Yes
Yes

Gesture Support 
 

No
No

Show text

Click Latency 
 

8.4
8.5

Latency Testing While Gaming  

Latency Data  

See details on graph tool
See details on graph tool

Expected Connection 
 

6.3 ms
6.0 ms

Wired 
 

N/A
N/A

Receiver 
 

6.3 ms
6.0 ms

Bluetooth 
 

N/A
12.5 ms

Show text

CPI 
 

9.2
9.1

CPI Video  

CPI Graph  

See details on graph tool
See details on graph tool

SRAV Close-Up  

Logitech G305 LIGHTSPEED SRAV Close-Up
Logitech G603 LIGHTSPEED SRAV Close-Up

SRAV @ 1600 CPI 
 

0.13%
0.12%

SRAV @ 800 CPI 
 

0.09%
0.21%

SRAV @ 400 CPI 
 

0.33%
0.42%

SRAV @ Fixed CPI 
 

N/A
N/A

Precision Error Between Speeds 
 

0.36%
0.35%

Precision Error Between CPI 
 

0.64%
0.34%

Worst Tracking Error 
 

-2.69%
1.31%

Minimum CPI 
 

200 CPI
200 CPI

Maximum CPI 
 

12,000 CPI
12,000 CPI

CPI Adjustment Steps 
 

50 CPI
50 CPI

Sensor Latency 
 

8.7
8.6

Sensor Latency Demonstration  

Sensor Latency Transition Graph  

See details on graph tool
See details on graph tool

Sensor Latency CPI Graph  

See details on graph tool
See details on graph tool

Delay To Start Of Movement 
 

15.8 ms
15.0 ms

Delay At Half Movement 
 

4.5 ms
5.1 ms

Delay To End Of Movement 
 

5.0 ms
5.2 ms

Sensor Specifications 
 

Sensor Technology 
 

Optical (LED)
Optical (LED)

Sensor Model 
 

HERO
HERO

Works On Glass 
 

No
No

Minimum Lift Off Distance 
 

1.2 mm
1.2 mm

Maximum Polling Rate 
 

1000 Hz
1000 Hz

Show text

Mouse Wheel 
 

Mouse wheel picture  

Logitech G305 LIGHTSPEED Mouse wheel picture
Logitech G603 LIGHTSPEED Mouse wheel picture

Scroll Wheel Type 
 

Notched Wheel
Notched Wheel

Scroll Wheel Steps 
 

24 Steps
24 Steps

Scroll Wheel Tilt 
 

No
No

Thumb Wheel Type 
 

No
No

Thumb Wheel Steps 
 

No Thumb Wheel
No Thumb Wheel

Show text

Noise  

Noise Video  

Click Noise 
 

Loud
Quiet

Show text

Operating System And Software

Configuration Software 
 

Software Tour  

Software Name  

Logitech G HUB
Logitech G Hub

Software Windows Compatibility 
 

Yes
Yes

Software macOS Compatibility 
 

Yes
Yes

On-Board Memory 
 

Yes
Yes

CPI (DPI) Adjustment  
 

Yes
Yes

Polling Rate Adjustment 
 

Yes
Yes

Profile Configuration 
 

Yes
Yes

Profile Auto-Switching 
 

Yes

Software settings screenshot  

Logitech G603 LIGHTSPEED Software settings screenshot

RGB On/Off 
 

No RGB
No RGB

Account Needed 
 

No

Show text

Mouse Compatibility 
 

10
10

Windows Compatibility  

Fully
Fully

macOS Compatibility  

Fully
Fully

Show text

Check Price

Black/Gray
G603 LIGHTSPEED
Amazon.com
Black/Gray
G603 LIGHTSPEED
B&H
Black/Gray
G603 LIGHTSPEED
BestBuy.com
Black/Gray
G603 LIGHTSPEED
Walmart.com

Logitech G305 LIGHTSPEED

Logitech G603 LIGHTSPEED

Comments

  1. Comparison

Logitech G305 LIGHTSPEED vs Logitech G603 LIGHTSPEED: Main Discussion

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