With ChanellWell Tech being the Dominant High Margin PSU OEM they were once the darlings of the PSU review Sites at that time they were a relatively unknown OEM that started in the High margin PSU's with an excellent reputation.
This Forum has always had high regard for their products, regardless of the branding.
the platform/design that is most popular in this mid-range is the CWT-PSH Platform.
Within the last month, Anandtech, and HardOCP Have Both Posted Negative reviews about these PSU's within Days of each other.
10/16/2008
HardOCP's Paul Johnson gave the Xigmatek NRP-MC851 850w CWT-PSH-850 Based unit a FAIL ! He actually tested two units, and both Failed.
http://www.hardocp.com/article...U2MCwsLGhlbnRodXNpYXN0
10/30/2008
Anand's Christoph Katzer Gave the Corsair TX750W CWT-PSH-750 Based unit a Less than Glowing review...
http://www.anandtech.com/casec...howdoc.aspx?i=3445&p=1
This by itself concerned me based upon the reviews because Review Samples are usually "Cherry Picked" before going to review sites.
Don't get me wrong either, I understand that there is a certain amount of defectives in a given population. And every OEM makes a certain amount of defectives.
What has concerned me is that the nature of the Noise, and ripple in extreme cases it would lead to premature component failure.
Typically for flexibility in Manufacturing there is a Base BOM that is tweaked appropriately to build a wide range of PSU's by simply adjusting the components in the BOM.
There are three grades of components generally available in the common items.. resistors, transistors , etc...
I have Recently seen a rash of This kind of Issue in a few Forums.
Hi folks,
I think my (XXXXXX) power supply is bad and is damaging the rest of my new PC?s components. I recently RMA?d the CPU and hard drive because they failed during tests. I received replacements from Newegg; however, a short time later BOTH hard drives went bad (one of the originals AND the replacement). That's THREE hard drives within a few weeks. Now I believe that the power supply fried the hard drives (and the original CPU?). Any chance that the problem might be the Asus motherboard instead? I personally have never heard of a motherboard causing damage to hard drives, but I have heard of PSU?s doing things like this. Has anyone else had an issue like this before? It?s a first for me.
Here?s the configuration (all ordered a few weeks ago from Newegg):
* CPU = Intel Core 2 Quad Q9550
* Mobo = ASUS P5Q-E LGA 775 Intel P45 ATX Intel Motherboard
* RAM = 4GB (2 x 2GB) 240-Pin DDR2 SDRAM
* Graphics = ASUS EAH4870/HTDI/1G Radeon HD 4870
* Hard Drives = 2 x SAMSUNG Spinpoint F1 500GB 7200 RPM SATA 3.0Gb/s Hard Drives
* PSU = (XXXXXXXX) Power Supply
* OS = Windows Vista Ultimate 64-bit
Any advice would be much appreciated.
This kind of totally bad kind of PSU is coming out of this population of PSU's, and this would indicate that "Quality Drift" is contributing to these "Poor Quality samples"
One of the reasons that I say this is the "MFG Line is in Shenzhen PRC"
I am not attacking any single brand of PSU, that is why I have Edited the Names to protect the innocent..
But i am asking the bigger question.... are you seeing the same general Drift ?