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 06-24-2009, 05:32 AM | #41 | |
| Junior Member  Join Date: May 2009 Romania Posts: 5  |  Quote:
PCPer. __________________ If it ain't broke... fix it until it is. | |
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| 06-24-2009, 08:36 AM | #42 | |
| Administrator  Join Date: Oct 2004 USA Posts: 2,553 | Quote:
Last edited by Gabriel Torres; 06-24-2009 at 08:46 AM. | |
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| 06-24-2009, 08:52 AM | #43 |
| Administrator Join Date: Oct 2004 USA Posts: 2,553 | Added, thanks. And I'd like also to say that I am happy to see more and more serious websites fixing their PSU testing methodology after we first publish our Why 99% of Power Supply Reviews are Wrong article. But still the number of websites that do correct reviews is still small compared to the number of websites saying B.S. out there! Slowly but surely we will change this... Cheers, Gabriel. |
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| 06-24-2009, 09:10 AM | #44 | |
| Junior Member Join Date: May 2009 Romania Posts: 5 | Quote:
 There are enthusiast peoples who build their own load tester too. __________________ If it ain't broke... fix it until it is. | |
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| 07-03-2009, 01:42 PM | #45 |
| Junior Member Join Date: May 2009 Posts: 14 | Is this a Fundamental flaw in the test protocol? Hi again, I have commented before how you folks do fine "Real World" testing of power supplies..I think you and others honestly do your best to weed out shoddy items..My problem is that I am tormented by the fact that power units that pass your tests, and frankly other testers results are so highly regarded by some manufacturers sales managers..This could lead to an abuse of trust..By that I mean XYZ sales Mgr. says to his Engineering Power supply Manager" I want to send On line tester ABC.com the following good unit" Now my point is, that does the Engineering Power Supply Manager go to the production line and randomly pick one that just passed the final test or does he make sure it passed all the specifications? I would hope that all submitted units are randomly picked off the assembly line and I am sure that you would too.. I read the actual customer reviews and sometimes they look like a different unit altogether..If you weed out the folks who complain about say rebates, and those who purchased a power unit too small for the job, you end up with units that die after one minute to several months and even burst into flames..I realize all things in electronics can happen and there are no guarantees in life..It does make me think was the reviewed submitted unit "Cherry Picked" or is it just poor quality control in the manufacturing process? I have no answer of how to ascertain that you are submitted a random unit unless you purchased the power unit yourself..Of course this could just be a paranoid old timer.. I don't know, but it has always worried me..It would be interesting to hear your thoughts on this... Again you folks do a great job.. jolphil  |
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| 07-05-2009, 08:39 PM | #46 | |
| Super Moderator Join Date: Jun 2008 Brazil Posts: 282 | Quote:
I prefer to imagine that all manufacturers pick up a ramdom product.. A "solution" for this issue is to buy all the material reviewed from the retail. The problem is the cost  __________________ Goodbye, and thanks for all the fish ! | |
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| 07-06-2009, 02:10 PM | #47 |
| Administrator Join Date: Oct 2004 USA Posts: 2,553 | Hello, As far as we know, all products are picked at ramdom. But even good brands do not have 0% RMA, meaning that from time to time one product or other will be defective. The problem is when one user get this defective component he will write a bad review. Also it is important to notice that I've seen users posting bad reviews about products for issues that have nothing to do with the power supply, like delay in shipping (yes, unbeliveable, huh?) or something of this sort. Another thing that you have to keep in mind is that our testing protocol is tougher than the testing protocol from most manufacturers, that test their units at 25o C, a temperature impossible to be achieved inside a typical PC. So when a manufacturer says their products passed their internal tests, this can mean nothing, if they use a flawed testing methodology. A very good example are the power supplies from Huntkey, all units from this manufacturer explode when we try to pull their labeled power, but the manufacturer says that we are manufacturing the results (as if...). They even taped and posted on youtube one of their power supplies working at full load. What they not pay attention (or better saying, do not want to pay attention) is that they test their power supplies at 25º C, while we test them at 50º C. Also power isn't everything. Take a look on this particular test that we did so you can understand better this question: http://www.hardwaresecrets.com/article/534 Cheers, Gabriel. |
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| 07-20-2009, 09:24 AM | #48 |
| Junior Member Join Date: Dec 2006 Germany; Wiesbaden (Hessen) Posts: 2 |  Feedback: Your testing environment and settings Hi there, I think if your testing of the power load begins at 20 % is bad. You should include at least 10 %, better 5% and 10%! This is especially usefull if you plan to use the psu for an media server, media pc, office pc, etc. If you have low power components, e.g. overall idle pc power is only about 40-70 watt, you don't know how efficient your psu really is, because with 20% load test, you really don't get this of an 450 watt and higher psu.. And the most if not almost all high efficiency psu like from corsair, seasonic, enermax, etc. (80 plus silver/gold certified), are rated 600 watt or higher/above..  My second point is, that you can only test at 115v. Do you have no ability/possibility to test with 230v?!? Thanks in advance. regards, iNsuRRecTiON from Germany.   |
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| 07-20-2009, 11:17 AM | #49 | ||
| Administrator Join Date: Oct 2004 USA Posts: 2,553 | Quote:
Quote:
Cheers, Gabriel Torres | ||
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