Alienware 17 60Hz GTX980m upgrade

hey,
So i upgrade my alienware 60Hz to gtx 980m. As i'm in exams period, a video tutorial will be available here and youtube when i will finish this sessions.
So here a tuto in sentence how i did it:

FOR 60Hz Alienware!!! I think it's the same for 120HZ..

-Have a 3pipe heatsink for 100W or mod a old one from previous alienware AND 240W ac not 180W.
- gtx980m from upgrademonkey saying it was for my p375sm clevo, he thanksfully fit a xbracket but it was the kind of present i will pass so i fit this x bracket with my alienware and it's work perfectly. And don't forget to put 2 pads for vram down the gpu.

- unmount your old gpu and start the laptop in ipgu mode ( intel gpu obviously) and uninstall nvidia driver with DDU v13.

-shut down and change bios like this:
Secure boot disabled, some have let with enabled. i like to disable everything
legacy disabled
uefi enabled, we can't disable this one
OS is Windows 8.1 x64 to not forgive

-After booting laptop and seeing everythings still works, shut it down, remove battery and push power button, like you will did to instal new gpu.

-Now, boot your laptop and maybe it will freeze like me, he will restart alone and immediately boot on windows. From here, we gonna disable driver signature. there are lot of tutorial easy to find, too long to write
-DOne, next is the pre-best: you instal driver .inf mod, i use from eurocom as i didn't have lot of time to test others or mod myself.

Driver for gtx980m update to 347.52, better but no OC available.
my .inf mod file: http://ift.tt/1QfJruD

Driver or 980m update 347.88, Overclocking enabled
my .inf mod file: http://ift.tt/1LRuICX

DRIVER better and OC on: 352.86 file for gtx980m:
http://ift.tt/1QfJp60

Driver 353.30 For windows 10 x64 GTX980m in optimus mode (both intel and nvidia working )
Download driver from nvidia then replace this file as usual location and boot in Disable Driver signature= f7:
http://ift.tt/1LRuID1

-Enjoy your new beast!
The only way i found to monitory temp as hwinfo didnt wnted to list my gpu, it was with gpuz sensor monitoring. My temp were from 45 idle to 71. i use my mod heatsink but i think it's a crap as some people were only at 68. i use ic diamonds as thermal paste.

Hope it will be usefull to some people and if you're patient for price dropping and video tutorial, wait a bit

UPDATE: VIDEO TUTORIAL OUT

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Alienware 17 60Hz GTX980m upgrade