Quadro K3100M 4GB Video Card Second-Hand Graphics Card for iMac A1312 27 Inch Late 2009 / Mid 2010

Quadro K3100M 4GB Video Card Second-Hand Graphics Card for iMac A1312 27 Inch Late 2009 / Mid 2010

Attention:
- This is not plug and play solution.
- You must know the model and year for your iMac and your old graphics model. Please read the following description carefully, so you can know what items you need to buy.
- You need to mod your old heat sink, and learn how to assemble the card and how to use OpenCore (OC) / OpenCore-Legacy-Patcher (OCLP).
- You need to know that this is not an original graphics card for Apple, and some features do not work, so please read the "Feature" in the description carefully.

Tested Machines:
- iMac 11,1 27 inch A1312 Late 2009 (The machine with "Core 2 Duo" processor is iMac 10,1 and can't work, please don't buy)
- iMac 11,3 27 inch A1312 Mid 2010
- iMac 12,2 27 inch A1312 Mid 2011

Feature:
- Genuine native boot screen and brightness control
- Metal Supported
- For Windows / Bootcamp
- VDA decoder failed (not for AirPlay / Apple TV)

More Information:
1.iMac 11,1 needs to use external display to boot into MacOS, and run OCLP to build new OC, then internal display can work. So, you need a MiniDP to VGA / HDMI / DVI cable / adapter / for Thunderbolt to get external display at beginning. If you don't have the cable, please contact us. If you get a black screen issue with your iMac 11,1, contact us for the solution first.

2. iMac 12,2 with old graphics HD 6970M 1GB / 2GB, must buy new X-bracket for MAM3.0 type A. The old X-bracket can't fit.... choose the option "card+X-bracket". Don't try to mod / cut your old X-bracket, the modded / cut X-bracket will damage the video card.

3. iMac 11,1 / 11,3 / iMac12,2 with the big 3-pipe heat sink, must mod the heat sink. If you don't know how to mod, or do not have the big 3-pipe heat sink, choose the option "card+heat sink+X".

4. Native boot screen and brightness control in High Sierra, but need to fix the level of brightness. Fix the applebacklight.kext or contact me if you don't know how to do.

5.Suggest OCLP (OpenCore-Legacy-Patcher) for High Sierra / Majave / Catalina / Big Sur / Monterey / Ventura. OCLP will fix the level of brightness and provide OpenCore boot picker. Need to post "nVidia Kepler patch" in Monterey, run OCLP and choose the second "Post Install Root Patch".

6.GPU Temperature Monitoring is available on, but does not control the fans! Move and fix the ODD sensor (CD-ROM temperature sensor) to the GPU heat-sink, and use Macs Fan Control to set ODD fan run in "full blast".

Package Included:
- 1 x Video Card