Great Wall has introduced a new version of its low-end Little King Kong desktop PSU in China, identified by JD as the GW-330SF, intended for low-power systems. The power supply comes with unusual environmental protection, including a PCB with a protective "three-proof" coating designed to resist insects, moisture, and dust, according to Great Wall.
According to Chinese outlet IT Home, the GW-330SF features 180-240V AC input, a single +12V rail rated at 19.16A, a 5V and 3.3V rail, fixed cables, and no AC power cable included in the box. At 19.16A, the +12V rail is rated for roughly 230W on its own, essentially matching the PSU's total advertised output.
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Great Wall says the PCB uses a protective coating that creates an insulating barrier over exposed circuitry, helping protect against moisture and conductive debris. Similar coatings are commonly used in industrial electronics.
The insect-proof part is interesting, as Great Wall isn't using a mesh that physically prevents insects from crawling into the PSU. If an insect gets inside a powered PSU, it can bridge exposed electrical contacts or introduce conductive contamination, potentially causing a short circuit or other failure. The protective coating doesn't necessarily keep insects out; instead, it makes exposed PCB areas less vulnerable if one gets inside.
As the power capacity suggests, this power supply is different from modern gaming PSUs. Its 230W output is better suited to office desktops and other systems built around low-power CPUs and integrated graphics. Buyers looking to run a gaming GPU will generally need a higher-wattage PSU, though low-power graphics cards that draw solely from the PCIe slot could theoretically still fit within the available power budget.
It also includes over-voltage, over-current, over-power, and short-circuit protection. The PSU costs 149 yuan, or approximately $22, and Great Wall rates it for operation at altitudes of up to 5,000 meters.
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Great Wall also manufactures Corsair's SF-series SFX power supplies, showing that the company's PSU portfolio extends well beyond inexpensive, low-power desktop units.
