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MDU2657 AND 2654 help witch choosing alternative one

Guest plmnb

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Guest plmnb

Hello i'm Daniel and i'm new on this forum but from the start i need your help.
My problem is that mosfets on my gpu are burned (3of them) . My gpu has 2 types of mosfet:
MDU 2654- I asked main eu director to send  me datasheet and i got this
MDU 2657 http://imageshack.us/a/img132/513/mosfet2657datasheet.png
Thanks to main director of Magnachip he also sent me alternative chips ,but i don't know which i should choose :
http://imageshack.us/a/img221/8448/mosfetmdu1515datasheet.png MDU1515
http://imageshack.us/a/img801/5331/mosfetmdu1512datasheet.png MDU1512
http://imageshack.us/a/img163/5447/mosfetmdu1516datasheet.png MDU1516
In my opinion best for replacing  MDU2654  is MDU1512
About MDU2657  i think MDU1515 should be good
What would happen if i put 100A 3.4Ohm (1516) instead of 2657 (61A 7,5 ohm) ?
Thanks for your effort
AD. that's how my gpu looks like http://obrazki.elektroda.pl/1536205100_1367394928.jpg

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