At a load of 450W the senior PSU model has a voltage ripple of 13 millivolts on the +5V rail, 32 millivolts on the +12V rail and 12 millivolts on the +3.3V rail. The junior model doesn’t differ from it much in this respect. There is no low-frequency pulsation on the output.

When working with an APC SmartUPS SC 620, the power supplies could each work under a load of 330W and 315W from the mains and batteries, respectively. The switching to the UPS’ batteries was performed without problems.

The cross-load characteristics of the power supplies coincide closely, so I only publish the senior model’s diagram. The junior model’s diagram can be made out of it by discarding the loads higher than its max output power.

The voltages are quite stable for power supplies with group voltage regulation. The PSUs cope easily with almost any load. It’s only at a catastrophic load misbalance (which can never be achieved in a real computer) that the +12V voltage exceeds the allowable limit. In the area of real-life loads it is all very pretty, except that the +5V voltage is just a bit too high.

ARX FD1212-S3142E fans are installed in the PSUs. The speed is varied from 1100 to 2000rpm. That is, the power supplies are average in terms of nosiness, mostly due to the rather high fan speed at low loads. They will suit an office computer well, but you may want to choose something quieter for your home PC.

The efficiency of these PSUs is the same 79% as with the AJ series models. It declines a little at full output power. By the way, this is another example that active PFC has no great effect on the efficiency factor: there is additional loss in the PFC circuit, but the loss in the main regulator’s primary circuits is somewhat reduced because it receives a higher voltage (400V) from the active PFC device.

The power factor is fluctuating around 0.99 through the entire load range.

So, In-Win has finally produced ATX12V 2.0 power supplies. It would be just immodest to delay any longer with their release, after all. There is nothing exceptional about these power supplies, but In-Win has never targeted the top market segment with its products. We now have to wait for the Q series power supplies to begin to be installed into the company’s system cases.