PSU confusion

[Zing5]

I was told this PSU is 500W but I only see max 144.

So is it 500W or not ?

[Fasauceome]

The 500 watt rating is basically a total lie. 12 amps on the 12 volt rail? Awful.

[GoldenLag]

11 minutes ago, Zing5 said:

I was told this PSU is 500W

i think its just a really missleading name

12 minutes ago, Zing5 said:

So is it 500W or not ?

one can assume OPP is 500w, which sounds like a terrible idea on such a PSU, but that can barely be qualified as a 200w PSU. 

 

in other words, dont use this unit, at all. 

 

Internal pictures of the PCB would be nice, tho thats just out of curiosity. 

[VeganJoy]

bruh how can they advertise that as a 500w psu, i aint a mathematician but 144w is a good bit less than 500w id say

[OrionFOTL]

1 hour ago, Zing5 said:

I was told this PSU is 500W but I only see max 144.

The PSU itself doesn't say anywhere it is rated for 500W. The manufacturer's website (http://rs.ms-start.com/proizvodi/napajanja/napajanje-ms-ms-500) does say it is rated for 500W, which is a lie.

 

The sticker says its 3.3V and 5V rails are rated for combined 70W, its 12V rail is rated at 144W, -12V at 6W, and 5VSB at 11W.

Plus I'm sure you can see yourself how garbage and cheap it is, which means it may fail far before reaching those outputs, or damage your components while powering them.

[Guest]

I am just so upset that there isn't a law.. at least a class action law suit... against ass clown companies that do crap like this.

 

They can slap whatever number they want on the PSU and there's ZERO repercussions.  

[Ankerson]

29 minutes ago, jonnyGURU said:

I am just so upset that there isn't a law.. at least a class action law suit... against ass clown companies that do crap like this.

 

They can slap whatever number they want on the PSU and there's ZERO repercussions.  

 

That's the problem with almost no enforceable international regulations.

 

But then if people wouldn't buy this crap in the 1st place there wouldn't be a demand.... But then that's another topic...

[akio123008]

1 hour ago, jonnyGURU said:

They can slap whatever number they want on the PSU and there's ZERO repercussions.  

Well that's the thing; if they slapped it onto the PSU they wouldn't get away with it. They only put the wrong number on their site.

[Guest]

19 minutes ago, akio123008 said:

Well that's the thing; if they slapped it onto the PSU they wouldn't get away with it. They only put the wrong number on their site.

"MS-500" implies 500W.

 

[akio123008]

4 minutes ago, jonnyGURU said:

"MS-500" implies 500W.

Fair enough. I don't see how any law could do much against that though, as it's not very explicit.

[fordy_rounds]

Another indicator of how terrible this is is to compare input wattage to output wattage. (Note: I'm oversimplifying this.) It says it takes as much as 5A input, which, at 240V, is 1200W. But it can only output a maximum (if you could stress all the rails all the way, which you probably can't) of 231W. That's only 20% efficient. (Compare this to the 80+ efficiency that's usually recommended....) Even if it's only taking 3A, that's 32% efficient. And where does the other 70-80% go? Heat. Which is why some people call this sort of PSU a fire starter.

Now, to be fair, the 3-5A is a rating for the wall circuit supplying it, not a statement of how much current the PSU will actually draw (for comparison, my 500W PSU specifies a minimum input of 8A@100V, or 800W, yet 500/960 is 62%, but the unit is 80+ Bronze certified, which means it'll never actually need to pull a full 800W. So input power rating doesn't tell the whole story, efficiency-wise, due to some built-in safety factors.) But nevertheless, I wouldn't expect very good efficiency out of this at all.

[Tan3l6]

Bit offtopic - Segotep used also a bit confusing "number in name minus 100W" names.  But they are good enough PSUs, not taken account the naming.

GP 900G Full MODULE = 800W