Rosewill Tachyon 1000 W Review

Name: Rosewill Tachyon 1000 W
Brand: Rosewill

crmaris

on Dec 4th, 2012,

in Power Supplies.

Manufacturer: Rosewill

Performance Rating & Performance per Dollar »

Ripple Measurements

You will see the ripple levels that we measured on the main rails of the Tachyon-1000 in the following table. The limits are, according to the ATX specification, 120 mV (+12V) and 50 mV (5V, 3.3V, and 5VSB).

Ripple Measurements Rosewill Tachyon 1000W
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
20% Load	10.6 mV	9.4 mV	6.6 mV	6.1 mV	Pass
40% Load	14.5 mV	11.6 mV	7.8 mV	7.4 mV	Pass
50% Load	16.6 mV	11.6 mV	9.3 mV	8.9 mV	Pass
60% Load	17.7 mV	12.2 mV	12.2 mV	9.8 mV	Pass
80% Load	23.2 mV	13.9 mV	18.6 mV	10.9 mV	Pass
100% Load	29.1 mV	14.7 mV	24.7 mV	13.2 mV	Pass
110% Load	32.3 mV	15.5 mV	25.9 mV	14.6 mV	Pass
Crossload 1	15.1 mV	12.0 mV	9.9 mV	5.4 mV	Pass
Crossload 2	26.9 mV	12.8 mV	18.8 mV	10.3 mV	Pass

Ripple suppression is excellent, something we expect from a Super Flower product and, in particular, this platform. The +12V rail stayed well below 35 mV, even during the 110% load test, and the minor rails behaved really well. Yes, the 3.3V rail registered higher ripple than the 5V one, but it still managed to stay around the mean of the ATX limit.

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 0.01 V) as standard.