Enermax has a new power supply on the market that is fully modular, fanless, and digital to boot. the new 550W PSU falls under the company's DigiFanless brand and looks to be perfect for enthusiasts wanting a silent PC.
The Enermax EDF550AWN is the first 550W power supply that is both fanless and supports digital monitoring and control. The 80 PLUS Platinum rated PSU is fully modular and supports both single and multiple +12V rail configurations (user-selectable, +12V1 and +12V2 are rated at 30 amps).
There are no fans here, just lots of ventilation for passive cooling. Enermax officially rates the power supply at 40°C (104°F) maximum operating temperature while delivering the full 550W ouptut power, but in talking with Maximum PC at Computex the company stated that in its testing lab they were able to maintain the maximum output at up to 50°C temperatures before the PSU needed to shut down.
The digital nature of the PSU is related to the ZDPMS (Zero Delay Power Monitoring System) technology which allows users to monitor and control the hardware using software running on the PC it is installed in. The application displays, in real time, the total output power, efficiency, temperature, and individual rail performance. Users can also input their $/KWh electricity costs into the TCO calculator to figure out how much it costs to run their PC and the CO2 footprint. Users are also able to use the ZDMS to adjust the current output and warning notification thresholds.
Maximum PC was on site at Computex and was able to see a demonstration of the PSU monitoring software.
Enermax has included logic to shut down the power supply in the event of overheating as well as the usual fare of safety features (OCP, OVP, UVP, OPP, OTP, SCP & SIP) They even included a bracket that locks the AC cable to the back of the power supply.
From the specifications and this review from ocaholic, the 550W Digifanless PSU is a highly efficient silent PSU with some useful extras that would be perfect for a silent gaming PC, HTPC, or audio engineering PC. It is available now for around $210 from online retailers. Looking on Newegg, you can even get it for 25% off using the promo code 25YRCELEBRATE.