Thermaltake Toughpower DPS G RGB 1250W PSU Review

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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).

Swipe to scroll horizontally

Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	14.7mV	7.8mV	6.0mV	6.1mV	Pass
20% Load	24.2mV	8.0mV	6.3mV	7.7mV	Pass
30% Load	30.2mV	8.7mV	6.8mV	9.7mV	Pass
40% Load	35.3mV	9.4mV	6.7mV	11.4mV	Pass
50% Load	30.4mV	9.8mV	7.2mV	13.5mV	Pass
60% Load	24.4mV	10.6mV	7.6mV	14.5mV	Pass
70% Load	32.8mV	11.6mV	8.3mV	16.7mV	Pass
80% Load	36.1mV	12.9mV	9.2mV	19.9mV	Pass
90% Load	39.4mV	14.2mV	10.8mV	21.9mV	Pass
100% Load	42.6mV	15.7mV	12.3mV	24.6mV	Pass
110% Load	45.1mV	16.7mV	12.8mV	25.8mV	Pass
Cross-Load 1	15.6mV	12.1mV	8.7mV	6.3mV	Pass
Cross-Load 2	41.5mV	14.9mV	12.2mV	26.2mV	Pass

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

9 Comments Comment from the forums

GPUEnthusiast

I think those cables look straight ugly with three colors like that. In a windowed case, you won't even notice they're sleeved and it will instead look like an old style power supply with the rainbow wires, just really thick. I think they should stick with black and red, or just black. That yellow is faded too much and looks like it's for a banana themed build.
Reply
g-unit1111

Maybe it's me but I fail to grasp how an RGB ring on a PSU adds to it. Especially since most cases have bottom-mounted PSUs these days.
Reply
jimmysmitty

18420891 said:
Maybe it's me but I fail to grasp how an RGB ring on a PSU adds to it. Especially since most cases have bottom-mounted PSUs these days.

It's all about them ground effects brah!!!!!

I agree though. Unless you have a very open bottom, most do not since most have a dust filter, it wont really show. I would expect a LED logo instead.
Reply
Nergo Pthycc

Gimme more LED's and maybe some rhinestones that glow and rotate!
Reply
turkey3_scratch

This is a really great power supply! The transient response performance is top-notch. I really like it. The only thing I wish is for it to be a multirail design.
Reply
basroil

Almost something I could recommend, if not for that horrible double line frequency oscillation in the 12V. I would have expected a digitally controlled system to be able to remove simple harmonics like that. Perhaps their controller algorithm isn't all that great?
Reply
powernod

I was anxiously expecting this review due to CWT's new CST platform.
Just like Aris said at the end of his review, i'm expecting to see how the smaller wattage models will perform.
The 1250 watt model seems like an excellent unit, and the only thing i disliked is the small output from the smaller rails ( 20A @5V &3.3V / 15A @5VSB ).
P.S. Once again, an excellent review from Aris!!
Reply
ralanahm

So with 104 amps on 12volts can you jump start your car?
Reply
Sunderas

At this price I would never go for it.
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