"1. VOLTAGE REGULATION was very good, but subject to careful setting of the voltage trim pots on the back panel. The adjustment range is as follows:
* +12V: 10.7 ~ 13.3V
* +5V: 4.5 ~ 5.6V
* +3.3V: 2.8 ~ 3.8V
For the 12V and 5V lines the adjustment range is up or down 10%, while for the 3.3V line, it is even bigger, ~15% up or down. The range of adjustment provided is quite large, probably too large for safety, in my opinion. Especially when voltage is set too high, the life of components can be seriously shortened. Also, trim pots change value with temperature and age.
But the LED indicators help to avoid problems. The voltage adjustment is made with a small screwdriver. A plastic sticker over the trim post must be removed first. When the voltage falls within the +,-5% range, the LED directly below the trim pot glows green. Above that, it glows red; below that, it glows yellow.
Tested against a fairly accurate multimeter, the LEDs generally glowed green within +,-5% of the target voltage. This seems too loose a tolerance. When the 12V LED is green it could be 11.4V or 12.6V. A 2% range for green would have been more useful, especially for the performance oriented user interested in such adjustments. I'd recommend using a multimeter at the terminals of an unused output connector to tweak the voltages instead. This should be done while the computer is running. Naturally, care must be taken to avoid shorts.
When set for perfect accuracy at 90W output, the voltages sagged slightly as output increased, but it was well within the 5% range."
en dit van uw OCZ Powerstream voeding... OK hier is het aanpasbaar maar toch.