I felt this like a hit in my useless head
Regarding the Nikos mosfets i can say that we all know that there is a market of fakes in this industry so there may be fake/d Nikos overthere .It s quite easy to rename ,rebadge etc.
On the other hand maybe ,maybe ,there are newer Nikos manufactured from real silicon
A young brand like nikosem may be evolving.
My MSI KT3 Ultra2 lasted for 8 years beeing used like 14 hours a day in heavy usage ( as the Athlon Barton-s could ) and had not a single Nikos MOSFET on it
My humble opinion is that Nikos may be ok in areas were high ameperages are not needed , like driving a fan or something or some small chip.
I was astonished on how the VRM area heats up on my MSI 790XT-G45 compared to the Gigabyte 770-UD3 ,with the same "killer" CPU ,720 BE at stock
Maybe MSI engineers calculated the VRM-s for some other MOSFET characteristics and some moron in a factory decided to cut cost buy using those.
If you look at this AMD boards made by MSI you will observe they are also use ON transistors instead of Nikos or along them ,depending on the batch.
I have seen no ON mosfets burned on MSI mobos untill now or nobody that had them burned had not posted a picture.
So what gives if you only see Nikos burned in VRM areas ?!
They must be the culprit.
LE: I ve heard that capacitive loads on switching power supplyes outputs can overload them as well.
Maybe MSI engineers use to compensate vdroop "biger" capacitors on the VRM outputs ,
instead of using more VRM stages or a better quality VRM controller.
This may be one of the reasons they ve started using Hi-C cap ,the Tantalum ones.This capacitors have different characteristics and may help in avoiding overload when big capacitance is used.
Also mosfets have a frequency at which they switch properly.If this frequency is too high engineered so to compensate the lack of VRM phases ,they might start oscilating and make more heat.
Maybe this Nikos don t do well at specific frequencies ,like the ones MSI uses for their VRM controllers.Edited by Dromihetes - 3/18/11 at 5:59pm