Power factor control silent with better ventilation atx 12v compliant for most cpus and mainboards input voltage options spire technology is proud to present to you pulse power supplies a new brand of psu that ensures stability and value for money excellent value for money doesnacirceurotradet mean corners have been cut acirceuroldquo every pulse psu comes certified rohs compliant and with power factor control acirceuroldquo giving you a safe and stable foundation