item description extremely quiet 140mm ball-bearing fan decreases 17% noise level stable 650w continuous output (at 50? operating environment) complies with atx 12v 2.2 & eps 12v 2.91 version three independent & dedicated +12v rails (12v1,12v2,12v3 ) provide stable and superior performance for pc system (combined loading of 52a). support dual core cpu, quad core cpu, nvidia sli and ati crossfire multi-gpu technologies. modularised cable management to eliminate clutter and improve airflow inside the case. independent voltage circuit: offers unflappable current delivery under heavy load. strict voltage regulation (±3%): provides steady voltage for system. active power factor correction (pf>0.99) and high efficiency (up to 85%). japanese made capacitors. green power design that meets energy star, blue angel requirements protections: over current, over voltage, and short-circuit protection. safety / emi approvals: ce, cb, tuv, fcc, ul, cul, and bsmi certified. atx12v 2.2 eps 12v amd / inteldaul core support 12v combined output36apci express connectors x2s-ata connectors x6quiet fan