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Thermaltake Toughpower DPS G RGB 1250W PSU Review

Thermaltake recently released a new flagship Titanium-class PSU, the Toughpower DPS G RGB with 1250W max. power. Besides an RGB LED fan, this unit also features high performance, modular cabling, and compatibility with the SPM cloud platform.

Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the TPG-1250D-T's rails. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Test12V5V3.3V5VSBPass/Fail
10% Load14.7mV7.8mV6.0mV6.1mVPass
20% Load24.2mV8.0mV6.3mV7.7mVPass
30% Load30.2mV8.7mV6.8mV9.7mVPass
40% Load35.3mV9.4mV6.7mV11.4mVPass
50% Load30.4mV9.8mV7.2mV13.5mVPass
60% Load24.4mV10.6mV7.6mV14.5mVPass
70% Load32.8mV11.6mV8.3mV16.7mVPass
80% Load36.1mV12.9mV9.2mV19.9mVPass
90% Load39.4mV14.2mV10.8mV21.9mVPass
100% Load42.6mV15.7mV12.3mV24.6mVPass
110% Load45.1mV16.7mV12.8mV25.8mVPass
Cross-Load 115.6mV12.1mV8.7mV6.3mVPass
Cross-Load 241.5mV14.9mV12.2mV26.2mVPass
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Ripple suppression on the +12V rail is good, though not as good as Corsair's and EVGA's high-end offerings. Ripple on the 5V and 3.3V rails is fairly low, while it's low enough on the 5VSB rail.

We should note that Super Flower's implementations use extra filtering capacitors installed on the modular cables to enable such low ripple readings. The problem with cable-installed caps is that they make the modular cables bulkier. Thus, it is much harder to route them inside a chassis. On the other hand, the fully-digital Flextronics platforms (Corsair AXi units) manage to offer exceptional ripple performance without the need for extra caps on the modular cables.

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 0.01V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.

Ripple At Full Load

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Ripple At 110-Percent Load

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Ripple At Cross-Load 1

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Ripple At Cross-Load 2

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.