Having reviewed and dissected almost a dozen ATX 3.0 power supplies in the last year, thus far weve seen an interesting mix in design pedigrees for PSUs targeting the newest power standard. For some manufacturers this has meant bringing up entirely new PSU designs by OEMs new and old, developing fresh platforms to accommodate the new 12VHPWR connector and its up to 600 Watt power limits. Meanwhile for other manufacturers, especially at the high end of the market, their existing PSU designs are so bulletproof that theyve been able to add everything needed for ATX 3.0 compliance with only very modest changes.