Review Index:

Kingwin Lazer Gold Series 1,000W Power Supply Review

Manufacturer: Kingwin

Introduction and Features




Kingwin has just released four power supplies in their new Lazer Gold Series, with output capacities of 550W, 700W, 850W and 1,000W.  All of the units in the Lazer Gold Series are 80Plus Gold certified, which means they should deliver top efficiency (at least 87% efficient between 20% and 100% load and 90% efficient at 50% load).  The LZG-1000 PSU we have up for review comes with a full compliment of modular cables, a quiet 140mm blue LED fan and includes universal AC input with Active PFC.  It is designed to support the latest Intel and AMD processors along with multiple high-end graphic adapters (Crossfire/SLI/3 Way SLI).

(Courtesy of Kingwin)

Kingwin LZG-1000 PSU Key Features:

•    Supports Intel Core i5/Intel Core i7/Core 2 Quad/Core 2 Duo & AMD Phenom X4/Phenom X3/Athlon 64 X2 High Performance CPUs

•    Compliance with ATX 12V v2.2, EPS 12V v2.91,and SSI EPS 12V v2.92 Specifications

•    Crystal Cube Modular Plugs w/ Patented Power Connector Cable Management System

•    80 PLUS® Gold Certified: 87%, 90% and 87% Efficiency @ 20%, 50% and 100% Load

•    Compatible with Crossfire/SLI/3 Way SLI: PCI-E 6-Pin & 8-Pin (6+2) Connectors

•    Stable + 12V Current

•    140MM Blue LED Fan

•    Intelligent Auto Fan Speed Control

•    Over Power/Under Power/Over Voltage/Short Circuit Protections

•    Universal AC input (115V ~ 240V) with Active PFC

•    3-Year warranty

PSU Testing Methodology

Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective’s power supply test bench can place a precise 2,000 watt DC load on the PSU under test.  Each power supply is tested under controlled, real-world conditions up to its maximum rated load, using both 115 VAC and 240 VAC line voltage.  Our current suite of tests includes:

•    DC Load Regulation

•    DC Line Regulation

•    DC Cross-load (unbalanced load)

•    AC Ripple and Noise

•    Power Factor

•    Efficiency

•    Differential Temperature

•    Noise

The Kingwin LZG-1000 power supply was evaluated on both features and performance.  A full range of equipment was used to test the power supply under controlled load conditions. 

•    (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)

•    (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)

•    (2) 200W Precision resistor load bank (+12V5 and +12V6)

•    Switchable precision resistor load bank (-12V and +5VSB)

•    Extech MultiMaster MM570 digital multimeter (Accuracy ±0.02%)

•    Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)

•    DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)

•    Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC

•    Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)

•    Custom PC60 enclosure to simulate real-world operating conditions