Review: HighPower HPC-300-102 PSU

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Dec 11, 2002 -- by Mike Chin

Product High Power HPC-300-102
Manufacturer High Power

High Power is not well known in the US or Canada. Certainly, this product is our introduction to the brand. It is an alternative brand of Sirtec International, established in Taiwan all the way back in 1968. The company was involved almost exclusively in OEM and only entered the retail market a couple of years ago. It is better know in Europe, where its 300-202 model ranked highly in a review earlier this year by CT Magazine in Germany against 18 competitors. The only model to best it on noise was the very expensive Engelking. Sound promising, doesn't it?

The review sample is not a HPC-300-202 but a HPC-300-102, which has passive PFC (power factor correction -- see the Zalman PSU review for full details.) The 300-202, which did not have PFC, is no longer in production.

First appearances mark this High Power as a generic OEM power supply. It has the look -- and the light weight. Take another look at the intake vent slots below. You'll see there is a stiff clear insulating layer of plastic sheeting covering two of the three rows of slots. They adapted another cover to make do on this PSU. The use of just the back vent is meant to force the incoming air to flow across the length of the whole heatsink without taking any shortcuts that would waste the cooling power. A thermistor fan speed control is present. The speed range is said to vary 1200~3000 RPM. There is the usually cutout rather than wire finger guard, which blocks about half of the vent area.

Under the Hood

Inside, the OEM impression continues witrh small heatsinks and somewhat untidy layout.

The fan itself is a Protechnic Magic brand model MGA8012MS. It is a 0.15A sleeve bearing fan that appears to have the following specifications:

32 CFM, 26 dBA @ 1M, 2500 RPM Max

Those numbers look good. The RPM rating contradicts the specifications for the PSU. The wrong fan data may be quoted because there are many models with identical numbers in this fan maker's lineup.

Specified DC voltage outputs

MAX Load Regulation Ripple Peak-to-Peak Max.
+5V 25.0A +5% ~ -5% 50 mV
+12V 13.0A +5% ~ -5% 120 mV
-5V 0.3A +10% ~ -10% 50 mV
-12V 0.8A +10% ~ -10% 120 mV
+5Vs 2.0A +5% ~ -5% 50 mV
+3.3V 20.0A +5% ~ -5% 50 mV

No combined maximum rating is given for the 5V and 3.3V lines combined. They are not independent, if they were, there would be promotional and technical notices to that effect.

Connectors: There are five 4-pin Molex connectors and two floppy drive power connectors on two sets of cables, the longest of which is ~27" long. The ATX and 12V cables are just 13" long each, presumably to minimize voltage drop across the wires.

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