Metal Support GPU?

[zoran]

I want to upgrade the GPU of my not working (failed stock GPU) mid 2010 27" iMac.
Ive heard about the Metal Support GPU, but i do not understand what exactly a GPU like that will help me.

 

[MacsolverUK]

Hi,

How to replace the graphics card -

iMac Intel 27" (Late 2009 or Mid 2010) Graphics Card Replacement

If you are using the iMac 27" late 2009 or 2010 model for games, you might want to upgrade your graphics card to the 6 series of the last 2011 model.

www.ifixit.com

Generally limited to GPUs that Apple Apple supplied with this model iMac, but some people have done things with other GPUs. Standard Apple supplied GPU options were ATI Radeon HD 5670 (512Mb VRAM) or Radeon HD 5750 (1Gb VRAM), neither are Metal GPUs I understand.

Metal supporting iMac 2009 to 2011 GPU upgrades:

2011 iMac Graphics Card Upgrade

iMac 2009 to 2011 MXM3 graphics card upgrade (Lastest update 10/13/2023 - this is the official documentation page - you found it finally!) This is the single and only documentation post. During the last years we constantly updated this post to reflect the lastet development of vBIOS and OCLP...

forums.macrumors.com

Metal support is officially needed for Mojave and above, but DOSDUDE patchers and Opencore Legacy Patcher can bypass this requirement.

I think the 2010 logic board had 3 SATA ports so you can add a second SSD boot drive to experiment with adding a later version of Mac OSX.

Hope this helps.