Kingwin LZP-1000: Platinum Efficiency at a KiloWatt

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Kingwin Lazer Platinum 1000W (LZP-1000) ATX Power Supply
Sample Supplier
Kingwin Technology
Market Price

Kingwin made quite an impact at SPCR last year with the >93% efficient Lazer Platinum 550W, which also turned out to be the quietest fan-cooled power supply at loads below 500W. This sample was followed by a 500W fanless version, which also boasted similarly excellent energy efficiency and almost complete freedom from electronic noise in actual operation. Both of those models are ideal for "classic" silent PC enthusiasts, who tend to favor minimalist PCs that draw less power and are easily cooled with a minimum of forced airflow. Now, Kingwin has released a 1000W model geared to more extravagant PC users, including gamers who favor multiple high power video cards and extremely overclocked CPUs. This is the top model in a series which includes three other models, at 650W, 750W and 850W.

The first generation of kilowatt PSUs that appeared around 2006 were massive, substantially longer and heavier than standard ATX12V models. They had to be, as the prevailing maximum efficiency was not much higher than 80%. At full rated power, the excess heat produced by a KW PSU was around 250W. Fast noisy fans and oversized heatsinks were required to deal with this heat. Hence the extra size and mass of those early mega-power PSUs.

Our recent review of the 80 Plus Gold rated Seasonic X1050 showed that KW PSUs have come a long ways since those early days. The new Seasonic not only achived >90% efficiency, it also challenged the acoustic performance of the quietest PSUs at <500W loads. The recorded SPL at 700W of 28 [email protected] was many decibels lower than any other PSU we've tested.

The Kingwin Lazer Platinum 1000W looks to one-up the Seasonic X1050. It's primary edge is efficiency — the official 80 Plus test report cites 92.64% efficiency at 500W load — compared to 90% required for 80 Plus Gold. We'll see how its acoustics hold up.


Big full color package for the Kingwin LZP-1000.

Good packaging, including a soft pouch for the cables.

Power supply, all the cables, and four thumbscrews to mount the PSU. The attached cables are sleeved, others are in the flat data-cable style. The flat profile can make cables easier to route in some cases. The 1.5m long AC cable looks sufficiently butch for the 1000W PSU power rating, with markings for 105ºC and 16/3C (16 gauge); such cables are usually good for 1625W or 13A at 125V.

FEATURE & BRIEF Our comment
Compliance with ATX 12V v2.2, EPS 12V v2.91, and SSI EPS 12V v2.92 Specification Good.
140MM Fan (25dBA) with Intelligent Speed Control and ECO Intelligent Thermal Control System (Patent)
A variation of the stepped thermal fan control pioneered by Seasonic years ago.
Crystal Cube Modular Plug w/ Patented Power Connector Cable Management - 8 connectors Just looks like a different connector.
Hybrid Dual Voltage Automatic Switch System (Patent)
What does this mean?
Superior Vertical Double Layer Main Transformer (Patent) OK... but superior to what?
More than 2,000 Times ON/OFF Test
80 PLUS® Platinum High Efficiency Power Supply Certified — 50% Load (92% Efficiency), 20% Load (90% Efficiency), 100% Load (89% Efficiency) This is why we're interested.
Stable + 12V Current
Single 12V rail?
Safety certifications: cTÜVus, TÜV, CB, CE, FCC, CCC, C-Tick, BSMI As expected.
Over Power/Under Power/Over Voltage/Short Circuit Protections OK.
Temperature Range: 0ºC ~ 50ºC Excellent.
Full Range Design from 115V ~ 250V (Active PFC) Like most high end PSUs on the retail market.
5 year warranty Matches compeititors.
Physical: 180(L) x 150(W) x 86(H)mm, 6.5 lbs 30mm longer than normal.

AC Input
115~240 VAC, 10A, 50/60 Hz,
DC Output

Only the 83A current capacity on the 12V line differentiates the LZP-1000 from the 550W model, which is rated for 45.5A. All other specs are identical.

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