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Rectangular metal power supply unit with a 140mm fan grille and cable bundle

CoolMax

CoolMax ZX-500 500W 80 Plus power supply

SKU CH-SMNQ-D47CV

500 W ATX power supply with 80 Plus efficiency, active PFC and a quiet 140 mm fan

  • Product typeAT
  • 500 W continuous output with 80 Plus efficiency
  • Active PFC auto-switches between 100-240 V AC input
  • 140 mm double ball bearing fan for quiet cooling
  • ATX12V 2.2 and EPS12V 2.91 compliant design
  • 15 SATA connectors plus dual PCI-Express power leads

Capacity and standards

The CoolMax ZX-500 is a 500 W ATX power supply built for standard desktop builds that require reliable 80 Plus efficiency. It meets ATX12V 2.2 and EPS12V 2.91 specifications and includes active power factor correction for stable operation across 115 to 230 V mains.

Connector layout and cooling

The unit provides one 20+4-pin main connector, one 4+4-pin CPU connector, two PCIe connectors in 6-pin and 6+2-pin form, five SATA connectors, five peripheral connectors and one floppy connector. A 140 mm double ball bearing fan handles cooling with quiet performance.

Included hardware

Mounting screws and a standard AC power cord are supplied in the box so the supply can be installed immediately. No additional software or adapters are bundled, keeping the package focused on essential hardware for a straightforward build.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $117.99
Cheaper than about 60% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

What does the 80 Plus rating on this 500W unit mean for real-world efficiency?

The 80 Plus certification guarantees at least 80 percent efficiency at typical loads, reducing wasted heat and lowering electricity draw compared with non-rated supplies.

Which case mounting points and clearances does the 140mm fan design require?

It fits standard ATX mounting holes; the 140mm double ball bearing fan needs unrestricted rear or bottom ventilation so airflow is not blocked by cables or a tight mesh panel.

How do I connect the 20+4-pin and 4+4-pin cables without forcing the keyed pins?

Align the clip side of each connector with the motherboard socket latch, press straight down until the clip clicks, and verify the 6+2-pin PCIe plug splits cleanly if your graphics card needs only six pins.

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