Replace 216-0810001 with 216-0810005 imac compatibility?

Kyle93

Active member
Have 2011 imac that had typical GPU failure, not fully loading into OSX. Original GPU 216-0810001. I replaced with known good 16+ 216-0810005 GPU and I now just have black screen and chime.,

Does anyone know 100% if 216-0810005 is compatible with 216-0810001 on imac? Search on forum and google just says it "should" work but nobody ever confirmed 100%
 

Kyle93

Active member
To help someone else out, No this does not work. After replacing with 216-080001 GPU iMac works great again
 
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