XPG Core Reactor 850 W Review

crmaris

on Jun 15th, 2020,

in Power Supplies.

Manufacturer: XPG

Efficiency »

Test Setup

Primary Rails Load Regulation

The following charts show the voltage values of the main rails, recorded over a range from 60 W to the maximum specified load, and the deviation (in percent) for the same load range. Tight load regulation is an important characteristic for every power supply because it allows for constant voltage levels despite changes in load.

5VSB Regulation

Burst mode—dubbed "kick mode" by Champion Microelectronic Corporation, the manufacturer of the resonant controller—is used with the resonant controller for higher efficiency at light loads, which affects the voltage level of the +12 V rail. This was also the case with the Core Reactor 750 and Corsair RM units, which also uses a CWT platform with similar features. This is why the +12 V rail's load regulation is close to 1%; it would otherwise be much tighter. Load regulation on the other rails is pretty good.

Ripple Measurements

Ripple represents the AC fluctuations (periodic) and noise (random) found in the DC rails of PSUs. Ripple significantly decreases the life span of capacitors because it increases their temperature; a 10 °C increase can cut into a capacitor's life span by up to 50 percent. Ripple also plays an important role in overall system stability, especially when it is overclocked. The ripple limits according to the ATX specification are 120 mV (+12V) and 50 mV (+5V, +3.3V, and 5VSB).

Ripple Measurements - XPG Core Reactor 850
Test	12 V	5 V	3.3 V	5VSB	Pass/Fail
10% Load	8.7 mV	7.3 mV	17.7 mV	5.5 mV	Pass
20% Load	11.1 mV	7.7 mV	18.8 mV	5.8 mV	Pass
30% Load	9.7 mV	7.9 mV	16.9 mV	5.9 mV	Pass
40% Load	8.9 mV	6.7 mV	14.7 mV	4.8 mV	Pass
50% Load	9.5 mV	8.1 mV	16.7 mV	6.3 mV	Pass
60% Load	11.2 mV	9.2 mV	17.4 mV	6.9 mV	Pass
70% Load	11.8 mV	9.2 mV	18.7 mV	7.0 mV	Pass
80% Load	13.5 mV	10.0 mV	21.6 mV	7.1 mV	Pass
90% Load	12.7 mV	10.0 mV	21.5 mV	7.4 mV	Pass
100% Load	17.3 mV	11.3 mV	25.5 mV	8.5 mV	Pass
110% Load	17.6 mV	12.2 mV	26.8 mV	9.0 mV	Pass
Crossload 1	9.8 mV	6.5 mV	17.8 mV	4.0 mV	Pass
Crossload 2	16.6 mV	11.5 mV	24.6 mV	8.6 mV	Pass