Thermaltake SMART 730 W Review

Name: Thermaltake SMART 730 W
Brand: Thermaltake

crmaris

on Mar 1st, 2012,

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 SP-730P. According to ATX specification the limits are 120 mV (+12V) and 50 mV (5V, 3.3V and 5VSB).

Ripple Measurements Thermaltake SP-730P
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	8.9 mV	7.5 mV	11.1 mV	5.3 mV	Pass
40% Load	16.3 mV	12.6 mV	13.1 mV	7.8 mV	Pass
50% Load	19.6 mV	13.8 mV	14.2 mV	10.9 mV	Pass
60% Load	23.6 mV	15.2 mV	15.6 mV	13.2 mV	Pass
80% Load	36.1 mV	19.6 mV	19.1 mV	12.5 mV	Pass
100% Load	48.2 mV	24.5 mV	22.2 mV	13.2 mV	Pass
Crossload 1	10.5 mV	13.9 mV	15.0 mV	6.0 mV	Pass
Crossload 2	45.7 mV	22.2 mV	22.6 mV	10.6 mV	Pass

Ripple suppression on the +12V rail surely is not ground-breaking but you can't call it bad either, for a PSU of this category, since it doesn't exceed 50mV in worst case which is the full load test. On the minor rails ripple is low and at full load it's below the half of the limit, meaning that ripple suppression is fairly good on these rails. Finally 5VSB registers very low ripple at all tests.

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.