terence52 if those mosfets are Nikos they will fail no matter you heatsink them.
By the way i ve finally took a look at how much would cost me to replace all the VRM Mosfets on the MSI 790XT-G45
I have found available in my country at farnell ,2 Infineon Mosfet samples ,able to cope in the MSI schematics by electrical characteristics.
One of them has identical characteristics to the ones used on the K9A2 Platinum and another one is a beautifull continuous 70 Amps at 100 Celsius and excelent thermal disipation.This baby would never die no matter what you do to it http://ro.farnell.com/infineon/ipd060n03l-g/mosfet-n-ch-50a-30v-pg-to252-3/dp/1775575http://ro.farnell.com/infineon/ipd053n08n3-g/mosfet-n-ch-90a-80v-pg-to252-3/dp/1775574
After making a little math i can say it s not smart to replace them via buying brand new MOSFETS.
I would need to get 15 pieces.If i get the "cheap" ones ,used on the Platinum ,i would need to pay half of the value the mobo has now at RMA.If i get the good ones ,rated at 100 Celsius , i practically pay the mobo value just to get them.
So buying the right mobo from the first place is the way to go.
MSI saved using this crap Nikos A LOT of money per fabrication .Edited by Dromihetes - 4/11/11 at 9:38am