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Why was this so cheap?

K

Kaiga

Gawd
Joined
Feb 2, 2005
Messages
827
ok, well, yesterday I recieved a really good PSU. 500 Watt for only $34. yes, $34.
http://www.newegg.com/app/viewproductdesc.asp?description=17-162-010&DEPA=0
what I don't understand why its so cheap? I don't know, but this thing is frikin' amazing. It is heavy, I decided to use the PSU support my case came with, and I did a massive stress test. It does not want to die! I did some crazy stress test. decided to borrow some HDD's and optics drives, a bunch of fans, and did a big overclock. in the end, it ran 4HDDs, 2 DVD-R's And SLI 6600GT setup, an Asus A8N SLI- (not the one in my sig.) 8 fans, and a 3400+ OC'd @ 2.5.
this thing has held out like crazy. this thing is tough and strong, and I see no power drops. It is a well made on at that. It also powered some case lighting.
I just want to know: why is it so cheap?
 
Because it's a generic PSU! It could be heavy because of the added ballast to mislead consumers. ;) So you've got a SLI setup, lots of drives, and a decent overclock, you would be willing to trust all that to a $34 power supply? It delivers 20A on the +12V rail (where it is most important) at 25C... where my 420W OCZ Powerstream outputs 30A at 40C on the same rail. You do the math.
 
wtf is a DYNAPOWER? i would not trust it in my rig, maybe in an old rig or something, but nothing that really was powerful or anything. check the faq for a psu buying guide and pick up an antec, pcp&c, ocz, or another major brand. you will be much happier in the long run
 
Kaiga said:
ok, well, yesterday I recieved a really good PSU. 500 Watt for only $34. yes, $34.
http://www.newegg.com/app/viewproductdesc.asp?description=17-162-010&DEPA=0
what I don't understand why its so cheap? I don't know, but this thing is frikin' amazing. It is heavy, I decided to use the PSU support my case came with, and I did a massive stress test. It does not want to die! I did some crazy stress test. decided to borrow some HDD's and optics drives, a bunch of fans, and did a big overclock. in the end, it ran 4HDDs, 2 DVD-R's And SLI 6600GT setup, an Asus A8N SLI- (not the one in my sig.) 8 fans, and a 3400+ OC'd @ 2.5.
this thing has held out like crazy. this thing is tough and strong, and I see no power drops. It is a well made on at that. It also powered some case lighting.
I just want to know: why is it so cheap?
Click to expand...

Becasue it is 8 pounds of shit in a little metal case.

Dynapower=POS PSU
 
Kaiga said:
ok, well, yesterday I recieved a really good PSU. 500 Watt for only $34. yes, $34.
http://www.newegg.com/app/viewproductdesc.asp?description=17-162-010&DEPA=0
what I don't understand why its so cheap? I don't know, but this thing is frikin' amazing. It is heavy, I decided to use the PSU support my case came with, and I did a massive stress test. It does not want to die! I did some crazy stress test. decided to borrow some HDD's and optics drives, a bunch of fans, and did a big overclock. in the end, it ran 4HDDs, 2 DVD-R's And SLI 6600GT setup, an Asus A8N SLI- (not the one in my sig.) 8 fans, and a 3400+ OC'd @ 2.5.
this thing has held out like crazy. this thing is tough and strong, and I see no power drops. It is a well made on at that. It also powered some case lighting.
I just want to know: why is it so cheap?
Click to expand...


Sorry, but for some reason (I'm thinking the 3rd grade grammar) I don't believe a word you tried to type.

 
Actually you sometimes get lucky with cheap PSU's. I remember i got one in a case over a year ago 420watt Just4PC psu(case and psu like $35), and powered lights, 2 Hdds, 2700+ athlon xp a abit an7, radeon 9800pro, 2 optical drives 2x512mb ddr, and a few fans.

I even used it for when i upgraded to an A64. I've since moved on to a 480watt antec true blue, but It still works to this day in an athlonxp 1800+ pc.
 
Superfly3176 said:
Actually you sometimes get lucky with cheap PSU's. I remember i got one in a case over a year ago 420watt Just4PC psu(case and psu like $35), and powered lights, 2 Hdds, 2700+ athlon xp a abit an7, radeon 9800pro, 2 optical drives 2x512mb ddr, and a few fans.

I even used it for when i upgraded to an A64. It still works to this day in an athlonxp 1800+ pc.
Click to expand...

And sometimes you get lucky the bear only mauls you........
 
I've seen lower than 20Amps on the 12V rail.
My old psu was running under 20A on the 12v rail and it worked fine for about a year 'till I replaced it, still works now too
 
Superfly3176 said:
Actually you sometimes get lucky with cheap PSU's.
Click to expand...

I would remind everyone that what are largely considered POS crap PSUs vastly outnumber "quality" PSUs, they are literally everywhere from whiteboxes to highend OEM boxes
but there are some important points to consider
when an OEM manufacturer integrates a system they know to within a fraction of an amp the total (and dynamic) crossload their particular config draws, but more importantly, they know the actual capacity of the supply they are considering, they have the actual specs, its derating curve and real test results to work with

we dont

we also ask for alot more flexibility out of a supply and generally a higher quality of power and reliability as well


generally speaking there isnt all that great a difference between a marginal and a good PSU until it has to deal with unusual circumstances ;)

if you want to actually stress test that PSU
load the CPU\GPU to 100% and then suddenly cut that to next to nothing and look for overshoots, for browny points repeat that while simulating a brownout (using a variac)

Id assime that supply has pretty poor compliance somewhere within the crossload of the spec, and more than likely poor filtering (AC Ripple)

Id point out no real specs are given
its an ATX12V v1.2 or v1.3 supply
and the 500W is a peak rating not continous
 
I still don't see why you guys are flaming this PSU, it is still going strong. this thing is quiet as well. I can see this thing even has power to spare. as for 20A on the 12V rail, that might not be the best, but this thing seems like good quality. Its still going, I'll update in about a month and tell you if its dead or not. but as of now, it has endured some extreme loads so far. and it doesn't seem like its going to give up anytime soon.
plus, wouldn't you consider it a good buy for the money?
 
i dont get it, according to your signature you have a >Power PC & Cooling 510W<<-.....->> why would you use this cheapo generic psu insted of the "power pc and cooling" assuming you mean "pc power and cooling"
 
Kaiga said:
I still don't see why you guys are flaming this PSU, it is still going strong. this thing is quiet as well. I can see this thing even has power to spare. as for 20A on the 12V rail, that might not be the best, but this thing seems like good quality. Its still going, I'll update in about a month and tell you if its dead or not. but as of now, it has endured some extreme loads so far. and it doesn't seem like its going to give up anytime soon.
plus, wouldn't you consider it a good buy for the money?
Click to expand...

because it's far more likely to die and take your entire system with it than a good quality one
 
Kaiga said:
plus, wouldn't you consider it a good buy for the money?
Click to expand...

No. Two reason's.

1) No real test was done on the PSU.
2) It is from a known crappy supplier.

If it was from a known good supplier I might give it a go. Hell I am doing that right know with a TTGI modular but I am not going to risk it with a known crappy manufacturer. Would you buy a Yugo instead of a Honda?
 
20A on the 12V rail is big.... HA HA HA.

My 250Watt Forton has 17A on the 12V rail.
 
Kaiga - when everyone that posts is going "Oh god, that's such a piece of shit" it's quite possible that the part may have some issues you hadn't considered before.
 
Sorry, but I wouldn't trust the rest of my SLI rig to a $34 power supply, especially one that only has 20A on the 12V rail.
 
I read somewhere that Dynapower was once an American PSU maker that went out of business. Maybe somebody bought the rights to the name.

I entered the UL registration number, E236123, into UL's online certifications directory, and it returned: Sorry, No Match Found. Every other time I've gotten that result, the PSU was an obscure brand cheapo. Coincidence? ;)

Another thing I don't understand is why the box shown in this picture is labelled "250W 300W" as well as 500W?

How many watts was your "massive" stress test? The typical computer never draws more than 200-250W.
 
Looking at the newegg pictures, I think it’s kind of funny that the picture on the box shows the powersupply having a nice metal fan guard on the back while the picture of the real power supply shows that it has one of those “signature of cheapness” fan guards that is just basically holes cut out of the power supply casing itself.

When it comes to things like powersupplies, its way too easy to look at the short term. It might work fine now, but in 6 months when it blows sparks out the back and sets fire to your house, you might think otherwise. Also, it’s rarely the powersupply that shows signs of problems, it’s the components that it is in the process of frying that will show the problems first. In that case, the victim usually then creates a thread here talking about how much the component manufacturer sucks when in reality it’s all because they decided to save a few dollars on possibly the most important part of their computer.
 
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