Articles: Cases/PSU
 

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Cross-Load Stability

The +12V rail is more stable than that of the Cooler Master. It is only at minimum load or when the load is misbalanced towards the +3.3V and +5V rails that the +12V voltage deflects more than by 3% from the required level.

As for the rest of the voltages, the ATX-0240GA is similar to the Cooler Master in this test.

The +5V voltage sags when there’s high load on the +12V rail or on the +5V rail. On the other hand, this voltage isn’t going to deflect more than by 2 or 3% under typical loads.

The +3.3V voltage is close to perfect, always staying within 2% of the required level.

Like the Cooler Master above, the ATX-0240GA can only power up the weakest of our three reference configurations, but its voltages would be within 1% of their nominal values with that configuration.

Output Voltage Ripple

The high-frequency ripple is close to but never exceeds the permissible limits.

The low-frequency ripple is weaker, the permissible limits being only approached by occasional voltage spikes.

Temperature and Noise

The PSU is cooled by a 7-blade 120mm ADDA fan (AD1212HS-A71GL) with a rated speed of 2200 RPM.

The fan starts out at about 900 RPM and doesn’t accelerate much until a load of 250 watts. Then the speed increases linearly, reaching 1100 RPM at full load.

The PSU is rather quiet and its fan regulation algorithm is praiseworthy.

Efficiency and Power Factor

The maximum efficiency of the Cooler Master was 80% but the Enhance ATX-0240GA beats that even at 50 watts. Overall, the ATX-0240GA meets the 80+Bronze requirements. That’s quite an achievement for an inexpensive PSU.

It’s no wonder that the Enhance ATX-0240GA is colder than the Cooler Master RS-400 notwithstanding its higher effective wattage and lower fan speed. It just dissipates less power as heat.

The power factor is high, just as you can expect from a PSU with active power factor correction.

Standby Source

The standby source copes just fine.

Summary

The Enhance ATX-0240GA is an affordable PSU with excellent functionality and efficiency (for its class). It is also quiet. A good choice for a modest PC configuration for reasonable money.

 
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