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I guess for my case, (due to "G-SYNC" feature") is impossible to use iGPU for display output. The LCD panel is physically connected to the output of the discrete nvidia GPU, bypassing the Intel GPU totally. (Googled) However iGPU is still active, some applications (Eg: iTune HD Video PlayBack)...

In windows it say "Not supported with GSYNC LCD PANEL" when I try to disable gtx 1070. The only way to use only IGPU via disable nvidia driver under devices manager. You are right I know very little about this system, just got it for less than a week.. I find out more... Thank You for your...

There is nothing I can do in the bios regarding GPUs... no enable or disable options...

Sorry ! my bad, please see attached. Thanks !

Still unable to get Intel HD 630 IGPU working, would appreciate if you can point me to the right direction. Thanks !

KBL id is 0x591b0000 not working either, something else is not right. However I got GTX1070 working with Nvidia driver. Thanks for your assistant & reply !

Can share your clover's information ? Tried NvidiaGraphicsFixup but no go for me, Thanks!

Hi guys, I'm trying to get OSX 10.12.6 working on alienware 15 R3 laptop. Managed to install and boot to desktop so far. Trying to resolve the screen tearing issues (no QE), I guess Intel 630 IGPU is not recognize by the system. Been reading threads recommended by RehabMan but to no avail. Would...

Great post ! Learn alot thru your link...

- Well the reason you guys can't use MacPro5,1 or 4,1 because you have AppleTyMCEDriver.kext (ECC RAM check) in your s/l/e. Remove it and update kextcache you should be fine. If you do not want to do that you can change to imac12,2 which i am avoiding. There is no use runing Macpro3,1 because...

You are usingmacpro3,1 becos your system KP when using macpro 4,1 or 5,1 ?

In windows too ?

Did your card run full speed the moment you power or the moment you boot into OS X ?

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Article: OS X 10.8.2 Update This is great ! but sadly it did not work out for me :(

Yes, you are right. Just compare the 2 systems i3770 = there is an option to enable/disable i3770K = no option at all. Thanks, you save me a lot of time and reminded me about the vt-d ... FYI, I read some where the (K) can be under clock to have the vt-d feature enable ... but i did not try...

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:banghead: i see i see ! ........... so motherboard with 3770k do not have the option to disable vt-d ? Thanks !

Can you enlighten me ? don't tell me have to disable thunderbolt ! lol