HEC-350TW-TX Power Supply

Very quiet power supply – Joe

SUMMARY: An OK unit for modest power applications.

The good guys at the HEC Group were nice enough to send a sample of their HEC-350TW-TX Power Supply to try out, a 350 watt unit.

Key Features:

• Connectors: One SATA HD, one Intel P4, six HD, two floppy and one 24 pin connector (you will need an adaptor for 20 pin connectors)
• MTBF Above 100,000 Hours at 25ºC
• Silent Technology – <32dB At 80% Load
• EMI < 3dB
• One 120 mm fan
• Intel 1.3V compliant

Specs:

One thing I liked about this power supply is the 120 mm fan – quiet and moves a fair amount of cooling air:

A closer look at the heatsinks shows an interesting design:

Very simple yet quite effective.

To try it out, I hooked it up to a P4 motherboard and recorded voltages and temps at idle and under stress (running Prime95):

Under stress, I measured temps at the fan’s intake and at the exit of the power supply as follows:

Fan noise was quite low and the temps were very reasonable – not a lot of heat coming from this unit. However, voltages did dip somewhat and all lines were a tad under their rated levels (using MBM).

Overall, the HEC-350TW-TX Power Supply appears to be a reasonable unit for modest power demand applications; the 120 mm fan is a plus for noise and cooling.

Thanks again to the HEC Group for sending this our way.

Email Joe