Reviews - Hiper M300 300W Media Center PSU
Sample Provided by: Hiper (By OklahomaWolf on Sun, Apr-12-2009)

Page 1 -

Once more I find myself looking at the strange and unusual here today at, and I'm not just talking about the reflection in the mirror next to my monitor. I'm talking about the Hiper M300, a wee little power supply intended for use in Hiper's Media Center cases. This particular model weighs in at 300 watts, which is quite a challenge to do in a unit the size of many MATX supplies. I'm anxious to go to the next page to load test the unit and see if it's a mighty mouse or a mighty miss, but first things first - let's look at the box.

And our look at the box starts and stops here, for there really isn't a lot of anything on the box. No bullet points, no fancy icons. Just a simple load table, and that's about it for the useful info on the box. From the AC input spec on this part of the box we can tell the unit at least has active PFC, but that's about it.

Popping the box open, it looks like all you get with this unit is a manual and the power supply itself. Let me just unpack here and check.

Yup, just a pipsqueak power supply and a manual. No power cord, no screws. But is that manual at least worth the paper it's printed on?

Well, uh, it does have some useful info on it. Like the warranty, how to remove the old PSU from your media center case, and how to install and connect the new one. Specifications? You're out of luck with those, because the other side of the paper is blank. Come on, Hiper, is this thing made using top secret unobtainium or something? Surely this little unit must have some features you'd like to brag about.

In a case little bigger than my Logitech mouse, the M300 is indeed a small power supply. See that fan, there? That's a 50mm fan. See that other little fan in the top grille? That's a 40mm. This does not bode well for silent computing, I must say.

Despite the tiny size of the unit, I do have to admit that it does look good, being done up in my favorite matte black color.

Being such a small unit, there isn't much here for cabling. Then again, how many components can you cram into a Media Center case anyway?

Here's a better look at that 40mm helper fan. It's pointing straight down at the secondary side heatsink in there.

And here's a better look at the label on the unit. Huh - two 12V rails listed but no combined 12V rating? That's not giving me a terribly good feeling about this unit, I'd have to say. I wonder who the OEM is... I can't tell from this label, for there is no UL file number to go by. I'll have to determine that by examining the guts a bit later on. Meantime, I need some numbers for the load testing, so I'll work on the assumption that Hiper intends the two 12V rails to simply be added together. I mean, if this unit can do 380W peak, 252W at 12V should be no problem at all, right?

Hiper M300 +3.3V +5V +12V1 +12V2 -12V +5VSB
24A 30A 8A 13A 0.3A 2A
Max Power 120W   3.6W 10W

Yes indeed, the cabling is sparse on the M300. One SATA, three Molex, one 4 pin ATX12V. No PCI-E. I have to be honest, I would have liked a couple more SATA connectors.

Type of connector: Hiper M300
ATX connector (470mm) 20+4 pin
4-pin ATX12V connector (390mm) 1
SATA (160mm) 1
5.25" Drive (160mm+150mm+150mm) 3
3.5" Drive connectors (+150mm) 1
Unit Dimensions(L x W x H)
140mm x 85mm x 50mm

Now, I don't know what the layout of the Media Center cases are like, but I'm finding myself hoping that the SATA cable is long enough to actually do something with it. I hear some of you asking about 12V rail distribution... well, 12V1 is the 4 pin ATX12V connector. 12V2 is everything else.

Well, since Hiper hasn't given us much to talk about so far with this unit, let's go to the next page and see if load testing can wake things up around here.


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