Logitech M220 vs. M330 vs. M650: My Measurements and Click Recordings

Researched and tested by Dustin Sosko
Tested: September 26, 2026

Quick answer: I measured and recorded a Logitech M220, M330 Silent Plus, and standard Signature M650. The M220 was the smallest and lightest unit in this test. The M330 had the widest body. The M650 offered additional controls and was the heaviest. I could hear clicks in the recordings, but the measured clicking sequences were too close to the room-noise baseline to name a quietest mouse reliably.

This comparison publishes the individual sound trials, the recordings, and the physical measurements. The sound figures are dBFS recording levels, not dBA sound-pressure measurements.

For other shapes and use cases, browse the Quiet Computer Mice guide.

The exact mice I tested

I measured each dimension and ready-to-use weight three times. The table shows the averages rounded to one decimal place. These are measurements of my particular units, with their batteries installed; they are not claims about every unit sold.

The measured weights separate these mice more clearly than their heights do. My M330 was about 5.5 g heavier than my M220, while my M650 was about 24.9 g heavier than my M220. A scale photo shows one reading from a measurement session, so its display may differ slightly from the three-reading average in the table.

Logitech M220: the smallest and lightest test unit

My M220 measured 99.1 mm long, 59.5 mm wide, and 37.8 mm high, with an average ready-to-use weight of 69.9 g. Of these three units, it had the shortest body and lowest measured weight.

The original top-view photograph shows a compact body with the two main buttons and a scroll wheel. I tested it through its included USB receiver. I did not complete the workbook’s comfort sessions or tracking-surface tests, so I cannot say from this test that the M220 is more comfortable for a particular hand size or tracks better on a particular desk.

Its three full left-click-sequence readings ranged from −45.63 to −43.90 dBFS. All three were close to their respective room baselines. That range should not be interpreted as an isolated-click loudness specification.

Logitech M330 Silent Plus: the widest test unit

My right-handed M330 measured 105.8 mm long, 66.6 mm wide, and 37.4 mm high. It weighed 75.4 g on average with its battery installed. It was approximately 7.1 mm wider than my M220 and 7.3 mm wider than my standard M650.

That measured width is useful if you are comparing how much desk or bag space the mice occupy. It does not, by itself, establish which mouse will fit your hand best. I did not collect the planned hand measurements, grip observations, or completed comfort ratings.

I connected the M330 using its included USB receiver. The top-view photo documents the shape and controls of the unit I tested. Its three full left-click-sequence readings ranged from −45.52 to −44.31 dBFS, again close to the room baselines recorded for those rounds.

Logitech Signature M650: additional controls and greater measured weight

This was the standard M650, not the larger M650 L. My unit measured 106.3 mm long, 59.3 mm wide, and 37.3 mm high. Its average ready-to-use weight was 94.8 g, making it the heaviest of my three units.

The original photos show a different upper-control layout from the M220 and M330, as well as additional buttons on the M650. The sound log contains one additional-button recording for the M650 in round one, but those buttons were not recorded consistently across all three rounds. I therefore have not treated their sound reading as a three-round comparison.

I used the included Logi Bolt USB receiver for this test. Although the workbook identifies the model and connection used, this test did not assess other connection modes, software settings, or long-term battery behavior.

The M650’s three full left-click-sequence readings ranged from −46.22 to −43.80 dBFS. Two of those sequence readings were slightly below their separately recorded room baselines. That is a warning about the limits of this recording method, not evidence that the mouse makes no sound.

If your choice has narrowed to those two models, see my M650 vs. M330 Silent Plus comparison for a closer look at their controls, scrolling, and connection options.

My nine left-click recording trials

Each trial consisted of 20 left clicks, paced at approximately one per second. The “clicking sequence” value represents the measured level of the selected sequence, including the spaces between clicks. A positive difference means the sequence measured above that round’s room baseline; a negative difference means it measured below the separate baseline recording.

Across the three rounds, the M220’s sequence readings spanned 1.73 dB, the M330’s 1.21 dB, and the M650’s 2.42 dB. The ranges overlap. The room baseline also changed between recordings. Because the clicking sequences were close to those baselines, this test is inconclusive on which mouse has the quietest left click.

A negative sequence-minus-baseline value does not mean clicking reduced the room noise. These are separate selections of a changing recording environment. I could identify clicks during playback, but the full-sequence figures do not reliably separate the brief clicks from the background sound. I have not turned the workbook’s peak readings into a click ranking either: the logged peaks do not identify which individual transient produced each peak.

Listen to the original recordings

Each recording includes more than the left-click segment. Listen at the same playback volume and remember that your speakers or headphones will affect what you hear.

Small wireless check with the included receivers

I also logged 20 target-click attempts per mouse at each of three distances. This was a short check in my particular office, with my laptop and the included receivers. A missed target click can involve the test procedure as well as the connection, so these observations are not a general wireless-reliability rating.

All three had zero logged missed clicks at one foot in this short check. The M650 had no logged misses or cursor interruptions at the three tested distances. Repeating the test in other rooms, with more attempts and controlled target-click conditions, would be necessary before drawing a broad reliability conclusion.

How I recorded and measured them

I tested the mice on a mousepad in my office using an HP laptop running Windows 11. The recording device was its built-in Microphone Array (Intel Smart Sound Technology for Digital Microphones). My workbook records a microphone distance of 40.64 cm (16 inches), Audacity 4.0, a 48 kHz sample rate, and an input setting entered as 80.0. The workbook does not establish that “80.0” is a calibrated gain value in decibels.

I changed the mouse order across the three rounds: M220–M330–M650, then M650–M220–M330, then M330–M650–M220. I recorded a separate room baseline for each mouse and round. The nine logged baselines ranged from −46.34 to −44.09 dBFS.

The sound readings are dBFS, or levels relative to the digital recording system. They are not dBA measurements of sound pressure and cannot be directly compared with Logitech’s one-meter laboratory figures. Microphone sensitivity, input processing, distance, room acoustics, and the portion of audio selected for measurement can change a dBFS result. The workbook does not document every recording-system setting, including whether Windows audio processing was active.

My guide to how loud a computer mouse click is explains why microphone distance and measurement units matter when comparing sound claims.

Which one would I choose from this evidence?

• Choose the M220 if compact size and low measured weight are your priorities. It was the shortest and lightest unit I measured.
• Consider the M330 if you want to examine the wider body. It was the widest of my three units, though this test does not establish a comfort advantage. If you have narrowed the choice to those two receiver-based mice, read our Logitech M220 vs. M330 buying comparison for the practical shape and portability tradeoffs.
• Consider the standard M650 if you want its additional controls and do not mind the greater measured weight. My unit was the heaviest, and its top-view photo shows its control layout.

What about click noise? You can listen to all nine original recordings above. I could hear the clicks, but the measured clicking sequences were too close to the room baseline to determine which mouse was quietest. I therefore cannot recommend one of these three as the quietest based on this test.

To compare these models with other options, see my best silent mice guide.