Fractal Design Tesla R2 650W Power Supply Review


The Interior of the Fractal Design Tesla R2 650W

Cooling fan

Fractal Design has rebranded the fan of the Tesla R2 650W unit; therefore we cannot identify its manufacturer or exact specifications. However, we could find out that it is a ball-bearing engine fan with a maximum speed of about 1400RPM.


The OEM behind the Fractal Design Tesla R2 650W power supply is ATNG, a rather rare choice and the first such PSU we have seen here at Legit Reviews. The blue tape and covers are characteristics of an ATNG design. ATNG did a fine job assembling the unit, with a particularly clean soldering job.

Filtering Stage

A small PCB has been welded on the back of the AC receptacle, housing half of the filtering stage. The other half of the stage continues onto the main PCB. Fractal Design apparently overreacted a little here, as the filtering stage consists of four Y capacitors, five X capacitors, two filtering chokes and a MOV, compiling one of the largest filtering stages that we have ever seen.


There are only two heatsinks in the Tesla R2 650W unit. The heatsink on the primary side of the transformer holds the input bridge, the active APFC components (one transistor and a diode) and the two primary inversion transistors. The passive APFC components are a sizable, shielded coil and a Teapo 400V/330uF capacitor.

Secondary side

The second heatsink, on the secondary side of the transformer, holds the transistors which generate the 12V line. The 3.3V and 5V lines are generated via DC to DC converters, found onto the vertical PCB right after the heatsink. The capacitors at the secondary side of this power supply are all supplied by Teapo, with the exception of the solid-state products, which are supplied by CapXon.