Stefan Mileschin

Korean company Zalman is on the verge of launching its Goldrock series mid-capacity PSUs. Available in capacities of 550W, 650W, and 750W; the PSUs are 80 Plus compliant, with 87% to 92% efficiency at 20% to 100% load. The Goldrock series PSUs strike a cost-performance sweetspot by providing high-end PSU features, and making up for it with fixed cabling.

The Goldrock series PSUs from Zalman pack high-grade Japanese capacitors, active PFC, LLC resonant circuit, DC-DC switching. A single +12V rail design is implemented, which can deliver 45A of current on the 550W variant, 54A on the 650W, and 62A on the 750W variants. A 5VSB green IC gives the PSU ErP Lot 6 compliance. A secondary protection IC gives it protection against over/under voltage/current, overload, and short-circuit. The 550W, 650W, and 750W variants are expected to be priced at US $134, $145, and $158, respectively.

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