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ASRock Steel Legend SL-1200GW PSU Review

ASRock seem to be using a Globe fluid dynamic bearing (FDB) fan under their own label, with the ID RL4Z S132512EH-3M rated at DC 12V, 0.50A. We like FDB fans, they tend to last a long time and not make a lot of noise.

As we mentioned earlier in the review ASRock told us that they are partnered with HEC/Compucase for the design of this power supply, a company that has been around now for a very long time in the industry. The design of this unit is a half bridge LLC topology and incorporates four X capacitors, four Y capacitors and two filtering inductors. There are some rectifying bridges mounted on small heatsinks as well. Soldering quality throughout is pretty good, across the main PCB and daughtercards.

The primary capacitors of choice are Nippon Chemi Con – a 450V 560uF cap along with a 450V 460uF cap, for a total of 1020uF. Both caps are from their KHE and KMZ series and are both rated at 105C. On the secondary side of the unit there are six MOSFETs which generate the primary 12V rail. The 3.3V and 5V lines are generated from DC to DC converters mounted on a vertical daughtercard connected to the main PCB to save space. Caps in the secondary stage are from Nippon Chemi Con and Rubycon – both excellent Japanese manufacturers.

It ships with SCP, OTP, OPP, OCP, OVP and UVP protections in place.

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