Thermaltake Toughpower XT Platinum 1275 W Review

Name: Thermaltake Toughpower XT Platinum 1275 W
Brand: Thermaltake

crmaris

on Dec 20th, 2011,

in Power Supplies.

Manufacturer: Thermaltake

Performance Rating & Performance per Dollar »

Ripple Measurements

In the following table you will find the ripple levels that we measured on the main rails of TPX-1275M. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements Thermaltake TPX-1275M
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	14.5 mV	13.5 mV	28.4 mV	16.5 mV	Pass
40% Load	26.0 mV	15.8 mV	28.6 mV	17.3 mV	Pass
50% Load	26.1 mV	17.5 mV	29.5 mV	18.7 mV	Pass
60% Load	27.7 mV	19.0 mV	30.7 mV	20.5 mV	Pass
80% Load	33.3 mV	23.9 mV	38.9 mV	22.2 mV	Pass
100% Load	42.0 mV	28.6 mV	46.2 mV	25.4 mV	Pass
Crossload 1	74.3 mV	17.1 mV	37.4 mV	19.8 mV	Pass
Crossload 2	40.7 mV	27.0 mV	36.7 mV	21.1 mV	Pass

Ripple at +12V is quite good, except CL1 test of course, taking into account the capacity of the unit while at 5V is good since it is kept under 30mV at worst case. Clearly the weak link of all rails is 3.3V for which ripple suppression is terrible. There is a lot of noise in this specific DC output and we suspect that the corresponding VRM may be not in its best shape, at least in the sample we have in our hands.

Ripple at Full Load

In the following oscilloscope screenshots you can see the AC ripple and noise that the main rails registered (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the oscilloscope's screen the bigger the ripple/noise. For all measurements we set 0.01 V/Div (each vertical division/box equals to 0.01V) as standard.