Enermax today rolled out the MarbleBron line of mid-range PSUs. Available in 550 W, 650 W, and 750 W models, these PSUs offer partial modular cabling with 80 Plus Bronze efficiency. Under the hood, these units offer DC-to-DC switching, APFC, and protection against over/under-voltage, overload, overheat, and short-circuit. A single +12 V rail design is employed on all three models, with a 45 A main rail on the 550 W model, a 54 A rail on the 650 W model, and a 62 A rail on the 750 W model.

Another key feature with the MarbleBron is the use of a 120 mm high static-pressure fan with "Smart Air Control," with the PSU's noise output rated at 14 dBA with the load under 40%. The 550 W and 650 W models offer just one 4+4 pin EPS connector, while the 750 W model offers two. The 650 W and 750 W models offer four 6+2 pin PCIe power connectors, while the 550 W offers two. The company didn't reveal warranty or pricing information.