MSI MPG A1000G PCIe5 Power Supply Review

A Closer Look – Interior

MSI is using the well-known Hong Hua HA13525H12SF-Z fan, which is a 135mm FDB fan that we see in many mid-to-high-end power supplies, and we know it to be a good quality fan, given it’s used so prolifically in modern PSU designs.

The PSU itself is manufactured by Channel-Well Technologies (CWT), and it too is a fairly common design I’ve seen in a few units I’ve designed with just a few minor tweaks to make it fit their required specifications and form factor and the larger 135mm fan design.

The main bulk capacitor is pretty hefty, clocking in at 400V and 820 uF.

There are some fairly large secondary capacitors too, with two 16v 3300 uF units off to one side.

And a third one tucked onto the back of the connector board.

There are two 16v 2200 uF units here.

As well as a 50v 100 uF and a 25v 220 uF next to those, which in total, should more than make up the required 1000W output. Of course, all the capacitors here are 105c-rated Japanese models too.

The AC Line-in looks robust, with a good amount of shielding on the socket, and a protective wall between the cables and the main PSU. The solder looks a bit messy, but it’s very thick and leads into some robust-looking cables right back to the main transformer behind it.

The transformer has a solid PCB with some thick metal contacts going right into the main PCB.

Behind that, a larger 3.3v and 5.5v conversion board, and good spacing between them all ensure ample cooling from the fan above them.

There are some small aluminium heatsinks too, covering the PFC and DC-to-DC rectifier.

There’s a control board for the fan, which features an unused 5-pin header for an ARGB fan, as this layout is used for multiple PSU designs.