Precision and Quality Test Results • Actuation • Travel Distance • Gram Force • Noise
Measuring equipment resolution • Distance 0.01 mm • Noise dBA 0.1 • Gram force 0.2 gF


Image and Graph Differences
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Image above shows values of average line, which is combination of 6 lines ( 2 7 = \ B / ). Table in graph shows values of 6 separated lines (gram force values before actuation). MX KEYS MED gram force value in table is calculated from MAX values of 6 separated lines:
60.4 + 57.6 + 58.4 + 65.8 + 55.2 + 62.2) / 6 = 59.9
MAX number 59.7 of average line in image is lower than MED number in table (average of 6 MAX values), because MAX peak of average line is not at the highest points of all 6 separated lines (they are at slightly different positions).
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Actuation • Travel Distance • Gram Force • Graph
Gram force average before actuation from keyboard 2 7 = \ B / keys. Full travel distance = reached 150 gF.
Gram Force • gF |
MIN |
AVERAGE |
ON ACTUATION |
MAX |
Logitech MX KEYS |
60.0 |
61.6 |
33.3 |
63.2 |
Logitech K800 |
58.8 |
63.9 |
30.7 |
66.8 |
Cherry STREAM |
61.4 |
63.7 |
30.3 |
68.6 |
Dell KB216 |
56.6 |
59.0 |
39.4 |
60.0 |
Logitech MK270 |
49.8 |
53.9 |
39.0 |
57.0 |
Logitech MK295 |
54.0 |
56.6 |
51.6 |
59.0 |
Logitech G513 |
43.2 |
45.7 |
45.7 |
48.6 |
Corsair K70 |
50.4 |
51.5 |
39.7 |
52.4 |

Noise • Graph
Tested by dropping 60g "finger" (with Shore A 22 hardness silicone bumper at the end) 40 times on each 2 7 = \ B / key from 1mm height. Sound pressure level recorded from 1m distance. To avoid negative effects on sleep, sound pressure level should not exceed 30 dBA (Nigh Noise Guidelines for Europe by World Health Organization).
Sound Pressure Level • GOOD (0-30 dBA) • BAD (30+ dBA) |
MIN |
AVERAGE |
MAX |
Logitech MX KEYS |
22.3 |
24.7 |
26.5 |
Logitech K800 |
21.2 |
24.8 |
27.4 |
Cherry STREAM |
21.7 |
26.2 |
32.6 |
Dell KB216 |
20.4 |
22.9 |
26.1 |
Logitech MK270 |
24.5 |
29.0 |
34.0 |
Logitech MK295 |
19.8 |
23.3 |
28.5 |
Logitech G513 |
35.0 |
39.2 |
44.0 |
Corsair K70 |
39.2 |
42.6 |
46.1 |
Corsair K70 with 40A-R O-Rings |
32.2 |
37.8 |
42.4 |
