1st Player Steampunk PS-850SP 850 W Review

Name: 1st Player Steampunk PS-850SP 850 W
Brand: 1STPLAYER
Price: 90 USD

crmaris

on Jan 5th, 2022,

in Power Supplies.

Manufacturer: 1STPLAYER

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 essential for every power supply because it allows for constant voltage levels despite changes in load.

5VSB Regulation

Load regulation is within 1% at +12 V and 5 V, which is quite good. On other other hand, it is loose on the 3.3 V and 5VSB rails.

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 a vital role in overall system stability, especially when it is overclocked. According to the ATX specification, the ripple limits are 120 mV (+12V) and 50 mV (+5V, +3.3V, and 5VSB).

Ripple Measurements - 1st Player Steampunk Gold 850W
Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	32.3 mV	11.5 mV	19.0 mV	4.0 mV	Pass
20% Load	19.1 mV	10.4 mV	19.6 mV	4.5 mV	Pass
30% Load	12.7 mV	11.0 mV	19.7 mV	4.6 mV	Pass
40% Load	12.4 mV	10.8 mV	21.5 mV	5.1 mV	Pass
50% Load	12.4 mV	11.4 mV	21.6 mV	5.4 mV	Pass
60% Load	13.2 mV	13.2 mV	22.6 mV	5.5 mV	Pass
70% Load	13.6 mV	12.6 mV	22.5 mV	6.0 mV	Pass
80% Load	13.0 mV	13.0 mV	19.8 mV	6.2 mV	Pass
90% Load	13.3 mV	11.5 mV	18.1 mV	6.2 mV	Pass
100% Load	17.5 mV	13.8 mV	22.8 mV	7.7 mV	Pass
110% Load	19.1 mV	14.1 mV	24.3 mV	8.3 mV	Pass
Crossload 1	44.0 mV	16.8 mV	22.6 mV	5.4 mV	Pass
Crossload 2	44.0 mV	13.3 mV	17.1 mV	4.1 mV	Pass
Crossload 3	32.7 mV	13.7 mV	31.1 mV	3.9 mV	Pass
Crossload 4	18.4 mV	11.0 mV	17.5 mV	8.1 mV	Pass

When you stress the minor rails fully without a load at 12 V, ripple on the 12 V rail is notably increased, which means noise is passed on to the +12 V circuit through the VRMs. In general, ripple is low on all rails, but there is room for improvement at 3.3 V.