ABT-450MM is one of the most low-end power supplies from Kingwin, targeted to users building a very basic PC. Kingwin promises that this power supply can really deliver its rated power at 50° C. Is that so? Let’s check it out.

Kingwin ABT-450MMFigure 1: Kingwin ABT-450MM power supply.

Kingwin ABT-450MMFigure 2: Kingwin ABT-450MM power supply.

As you can see, this power supply uses a big 120 mm fan on its bottom (the power supply is upside down on Figures 1 and 2) and a big mesh on the rear side where traditionally we have an 80 mm fan. We like this design as it provides not only a better airflow but the power supply produces less noise, as the fan can rotate at a lower speed in order to produce the same airflow as an 80 mm fan.

This power supply, however, doesn’t have active PFC. In practical terms this only means that Kingwin can’t sell this product in Europe (you can read more about PFC on our Power Supply Tutorial).

As for efficiency, Kingwin says that this product has a 70% minimum efficiency. Keep in mind that more expensive power supplies have an efficiency of at least 80%. The higher the efficiency the better – an 80% efficiency means that 80% of the power pulled from the power grid will be converted in power on the power supply outputs and only 20% will be wasted. This translates into less consumption from the power grid (as less power needs to be pulled in order to generate the same amount of power on its outputs), meaning lower electricity bills.

This power supply comes with four peripheral power cables: one auxiliary power cable for video cards with 6-pin connector, one cable containing three standard peripheral power connectors, one cable containing two standard peripheral connectors and one floppy disk drive power connector, and one cable containing two SATA power connectors.

The number of connectors is enough for a mainstream user that won’t have more than two SATA devices willing to build an entry-level or mainstream PC with a good video card. However, users with more than two SATA devices (i.e., more than two hard drives) will need to use adapters.

The main motherboard cable uses a 20/24-pin connector, and this power supply has one ATX12V connector, not coming with an EPS12V connector.

On the aesthetic side Kingwin used nylon sleeving only on the main motherboard cable and it comes from inside the power supply housing.

All wires are 18 AWG which is perfect.

This power supply is really manufactured by Super Flower, being a Super Flower SF-450P12N power supply. Interesting enough this model isn’t listed on Super Flower’s website, meaning that Super Flower website is completely outdated (what is more probable, as they are still advertising Computer 2007, which took place in June 2007) or they simply don’t manufacture this power supply anymore, being an old and discontinued product.


Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.