- Review -

15.06.2015 Tom's Hardware

Dynatron uses thick fans with heavy duty motors to produce high air pressure through narrowly spaced fins, yet even its powerful 80mm cooler can’t stand up to the cooling capacity of Noctua’s 92mm NH-U9DX i4. Dynatron’s fans also override motherboard fan settings, making it impossible to hold a moderate fan speed if the CPU is even a little warm. [...] Decibels are a logarithmic scale, so an increase of ten decibels has twice the sound pressure level. That means the R27 is nearly four times as noisy as the NH-U9DX i4, and the R24 is nearly twice as noisy as the R27.

"The NH-U9DX i4 is the clear winner in value, noise and cooling power" (Thomas Soderstrom, Tom's Hardware)