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iMac27, Mid2011 Project

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User avatar
RedStarOne
Developer
Developer
Posts: 7
Joined: 01 Nov 2018, 09:38
CPU: Xenon X5670
Motherboard: Gigabyte-X58A-UD3R
GPU: NVIDIA GTX960
Location: Germany/Köngen
Contact:

iMac27, Mid2011 Project

Post by RedStarOne »

Hello,

I want to upgrade my iMac27 (12,2) with
a new Grafikcard! NVIDIA GTX860M and
a new CPU! i7-3770 (Ivy Bridge), and replace
the old GPU! With AMD Radeon HD6970M
and the old CPU! i5-2400 (Sandy Bridge),
from iMac27 (12,2) to iMac27 (13,2) BUT!

How? Can I do this?

Can I download the firmware from the iMac27 (13,2)
and replace the firmware from my iMac (12,2) or is
this not possible, because of the "wrong" iMac?

Because I have build the i7-3770 CPU! In my iMac,
it is the same Socket H2 (1155) but NO! Boot any more,
I think! Of the missing CPU-ID in the firmware of (12,2)
I'am right? Or NOT !?! Or how? Can i edit the firmware,
and ad the CPU-ID for all Ivy Bridge CPU's by myself,
with an APP or program! But with program I need?

And the second test! Was to build the GTX860M in my iMac
(MXM-Module) change, it is SIMPLE! But it boot's UP! But no
picture, just a black screen! But boot is WORKING! I have hear it,
with voice over! I think, the PROBLEM! Here was the missing!
Driver for my GTX860M, because I have not installed
the NVIDIA Web Driver, is this also right !?!
And I have also solved! The problem with the broken! HD6970M
with become! stripes or a blank screen, because of the heating!
OVER! Heating the GPU! This problem is known! Ok.

I don't want to OPEN! My iMac27 twice again, before I know, if
THIS! Konfiguration will WORK! So my question is, can this! will
be working! With a Web Driver! The newest for El Capitan (15G22010)
or have I Update to Sierra first, and then with the new GTX860M to
Mojave, because! Of the missing support for the HD6970M GPU!

So PLEASE! Give me a answer, THANK! You.

Greets

RedStarOne.
1.) Gigabyte GA-X58A-Ud3R/INTEL X5670/GTX960(2GB)/12GB Ram/Manjaro XFCE/Win 10/Mojave 10.14.4(Olarila)
2.) Gigabyte GA-Z170X Ultra Gaming/INTEL i5-6400/GTX680(4GB)/4GB Ram/Mojave 10.14.4(Olarila)
3.) iMac 12.2/INTEL i5-2400/HD6970M(1GB)/4GB Ram/El Capitan
4.) Liantec ITX-6M45/INTEL P8600/GTX285(1GB)/8GB Ram/Win 10
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MaLd0n
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Posts: 17425
Joined: 05 Dec 2010, 19:35
CPU: i9-9900K
Motherboard: GA Z390 M GAMING
GPU: RX 590 8 GB
Location: Rio de Janeiro, Brazil
Contact:

iMac27, Mid2011 Project

Post by MaLd0n »

reset nvram command+option+p+r and reset smc too, check manual
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User avatar
RedStarOne
Developer
Developer
Posts: 7
Joined: 01 Nov 2018, 09:38
CPU: Xenon X5670
Motherboard: Gigabyte-X58A-UD3R
GPU: NVIDIA GTX960
Location: Germany/Köngen
Contact:

iMac27, Mid2011 Project

Post by RedStarOne »

How? and why reset the SMC too?

Will this! ONLY! Make my iMac27 (12,2) working
with a new CPU (i7-3370) and GPU (GTX860M) ?

Then it is really SIMPLE! Is this "truth" ???

greets

JOEL Kind.
1.) Gigabyte GA-X58A-Ud3R/INTEL X5670/GTX960(2GB)/12GB Ram/Manjaro XFCE/Win 10/Mojave 10.14.4(Olarila)
2.) Gigabyte GA-Z170X Ultra Gaming/INTEL i5-6400/GTX680(4GB)/4GB Ram/Mojave 10.14.4(Olarila)
3.) iMac 12.2/INTEL i5-2400/HD6970M(1GB)/4GB Ram/El Capitan
4.) Liantec ITX-6M45/INTEL P8600/GTX285(1GB)/8GB Ram/Win 10
User avatar
MaLd0n
Site Admin
Site Admin
Posts: 17425
Joined: 05 Dec 2010, 19:35
CPU: i9-9900K
Motherboard: GA Z390 M GAMING
GPU: RX 590 8 GB
Location: Rio de Janeiro, Brazil
Contact:

iMac27, Mid2011 Project

Post by MaLd0n »

just Power Mac and press command+option+p+r

smc u need read manual
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