The quietest and the cheapest
HP USB Slim Business Keyboard
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We gathered up five wired keyboards: three mechanical-switch and two rubber-dome models. We placed a calibrated sound meter 2 feet and 45 degrees to the left of the keyboard and then repeatedly typed the phrase “I love the PC” for 30 seconds while logging the sound level.
We then averaged out the noise levels and ranked the five keyboards from worst to best. The results shouldn’t surprise you at all:
IBM Model M keyboard (buckling spring switches) 65.5 dBa
Razer Black Widow Chroma (Razer Green Switches) 64.5 dBa
SteelSeries 7G (Cherry Black) 62 dBa