Picobox X3-ATX-300 Mini Review

The Picobox X3-ATX-300 Mini is PicoPSU for small form factor PC builds. The X3-ATX-300 supports wide voltage range compared to most PicoPSUs, which are 12v only. The X3-ATX-300 is most comparable to HDPLEX.

SPECS

MODELPicobox X3-ATX-300 Mini
DIMENSIONS125 (L) x 63 (W) x 29mm (H)
OUTPUT300W (340W Peak)
VOLTAGE16 – 24V
EFFICIENCY90%
OPERATING TEMPERATURE
INPUT CONNECTOR7.4*5.0mm w/center PIN
SAFETYOvervoltage Protection
Overcurrent Protection
Over Temperature Protection

PicoPSUs come in two types, 12V only and Wide Voltage. 12V only support 12V AC Adapters, which go upto maximum 240W and become expensive after 200W vs 19V AC Adapters.

Wide Voltage PicoPSUs support range of voltages, commonly between 16 – 28V. Most high wattage AC Adapters are typically 19.5V, which are supported.

The Picobox X3-ATX-300 uses 7.4 *5mm power input, so only AC Adapters with 7.4*5.0mm w/center PIN input connector are supported. They must also have a voltage between 16 – 24V.

Because the X3-ATX-300 is the direct alternative to the HDPLEX, we compared the two PSUs below.

COMPARISON PICOBOX X3-ATX-300HDPLEX 400W
DIMENSIONS125 (L) x 63 (W) x 29mm (H)160 (L) x 51 (W) x 26mm (H)
OUTPUT300W (340W Peak)400W (500W Peak)
VOLTAGE16 – 24V16 – 30V
EFFICIENCY90%94%
OPERATING TEMPERATURE  -10C – 70C
INPUT CONNECTOR7.4*5.0mm w/center PIN7.4*5.0mm w/center PIN
SAFETYOvervoltage Protection, Overcurrent Protection, Over Temperature ProtectionOvervoltage Protection
Overload Protection
Overcurrent Protection
Short Circuit Protection

Rating: 4 out of 5.