The Raidmax RX-700AT 700W 80Plus Titanium Power Supply Review

Cold Test Results

For the testing of PSUs, we are using high precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox and various other bits and parts. For a thorough explanation of our testing methodology and more details on our equipment, please refer to our How We Test PSUs - 2014 Pipeline post.

The conversion efficiency of the Monster Power RX-700AT at room temperature is very good, surpassing 94.3% at about 50% load and 92.1% at maximum load. The average efficiency within the nominal load range (20% to 100% of the unit's capacity) is 93.1%. However, the platform does not meet the 80Plus Titanium certification levels for 230V AC input, as it would have to reach a conversion efficiency of at least 96% at 50% load. According to the certification documentation of the platform, it has received the 80Plus Titanium certification with a 115V AC input voltage, under which the certification parameters are not as strict.

The RX-700AT does not have a “semi-fanless” control mode, meaning that the fan starts immediately when the PSU is turned on, regardless of the load. The speed of the fan increases almost linearly in relation to the load. With the PSU operating in room temperature, the fan is nearly inaudible until the load reaches about 55-60% of the unit’s maximum capacity. Due to the very high efficiency and average maximum output of the PSU, the RX-700AT holds very low operating temperatures, barely reaching above 48 °C when operating in room temperature.