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  #11  
Old 03-16-2013
chasmcity chasmcity is online now
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Review @ Chiphell
http://www.chiphell.com/article-6788-1.html
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  #12  
Old 03-16-2013
ef3393 ef3393 is offline
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single layer PCB and Sleeve fan not match it price!!
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  #13  
Old 03-17-2013
Stefan Payne Stefan Payne is offline
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Quote:
Originally Posted by ef3393 View Post
single layer PCB and Sleeve fan not match it price!!
Why is it important how many layers the PCB has?! Don't understand that point.
But with a simple sleeve bearing fan, I'd agree with you.
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  #14  
Old 03-17-2013
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Quote:
Originally Posted by chasmcity View Post
Their ripple and efficiency readings are way off! There must be something wrong with their equipment since they report way too high efficiency readings on almost all of their reviews.
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  #15  
Old 03-17-2013
ef3393 ef3393 is offline
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Quote:
Originally Posted by ef3393 View Post
single layer PCB and Sleeve fan not match it price!!
double layer PCB with through hole is the biggest difference, through hole improve the solderbility many times. FR-4 also much better than CEM-1 for PCB material
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  #16  
Old 03-17-2013
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bobnova bobnova is offline
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Define "better".
Lower ripple?
Better regulation?
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  #17  
Old 03-17-2013
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it is said that guryhwa's equipment use the crude oxygen-free copper wire
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  #18  
Old 03-18-2013
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nope he just uses loads that have remote sense (Chroma) along with ones that don't have (Array) and apparently he doesn't utilize current shunts for the latter along with a measuring device (e.g. labjack) in order to measure the correct DC Watts. To do so he would need, besides the corresponding equipment, a custom made software that takes input from the non remote sense loads and the current shunts and add the calculated load to the one that Chromas read.

As for the lower ripple, if the difference was 10-15 mV I would say that this is mostly because of the high temps in which I test and many times the higher the temp the higher the ripple is. But a difference of 30-40 mV is just too much.

Anyway, my main objection in his results is the efficiency readings since I may got a bad sample, ripple wise (although Wolf had measured also around 60mV ripple so I don't think that this is the case).
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