Thermaltake Smart Pro RGB 850W PSU Review

Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

Ripple Measurements

To learn how we measure ripple, please click here.

This table includes the ripple levels we measured on the SPR-0850F-R's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Swipe to scroll horizontally
Test12V5V3.3V5VSBPass/Fail
10% Load9.1mV7.6mV11.9mV5.8mVPass
20% Load10.5mV8.0mV14.7mV7.1mVPass
30% Load10.7mV8.4mV15.2mV8.3mVPass
40% Load12.0mV8.4mV15.9mV9.1mVPass
50% Load14.1mV8.5mV14.9mV8.4mVPass
60% Load15.0mV8.5mV15.3mV9.0mVPass
70% Load17.4mV8.7mV14.4mV10.5mVPass
80% Load18.8mV10.1mV15.9mV11.4mVPass
90% Load20.7mV10.0mV16.3mV12.6mVPass
100% Load25.7mV11.8mV17.5mV19.2mVPass
110% Load32.5mV12.1mV17.5mV20.8mVPass
Cross-Load 111.9mV9.1mV15.9mV6.8mVPass
Cross-Load 224.6mV11.0mV18.9mV11.6mVPass

We observe very good ripple suppression across the board, especially on the all-important +12V rail.

Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V, and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01 V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.

Ripple At Full Load

Ripple At 110-Percent Load

Ripple At Cross-Load 1

Ripple At Cross-Load 2

MORE: Best Power Supplies
MORE: How We Test Power Supplies
MORE: All Power Supply Content

Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.