@jonnybadger with your board number (820-01236-06) you have the option of anyone of these
Apple Part Number 661-12471
3.7GHz, 6-Core i5, Radeon Pro Vega 48 8GB
Apple Part Number 661-12483
3.6GHz, 8-Core i9, Radeon Pro Vega 48 8GB
Apple Part Number 661-12467
3.7GHz, 6-Core i5, Radeon Pro 580X 8GB
Apple Part Number 661-12479
3.6GHz, 8-Core i9, Radeon Pro 580X 8GB
Apple Part Number 661-12475
3.6GHz, 8-Core i9, Radeon Pro 575X 4GB
Apple Part Number 661-12459
3.0GHz, 6-Core i5, Radeon Pro 570X 4GB
Apple Part Number 661-12464
3.1GHz, 6-Core i5, Radeon Pro 575X 4GB
crwdns2934105:0crwdne2934105:0
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crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
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crwdns2944067:04crwdne2944067:0
look for a number on the board you have it starts 820-
crwdns2934271:0crwdnd2934271:0 daniel crwdne2934271:0
@tech_ni - The board number is not the same as the part number! The board number helps you in locating the schematic and board view drawings. Ordering a logic board is a very different task.
crwdns2934271:0crwdnd2934271:0 DanJ crwdne2934271:0
my logic board says its a 820-01236-A is this compactible with the 820-01236-06. board. Thank you.
crwdns2934271:0crwdnd2934271:0 michael maguire crwdne2934271:0
@michaelmag62245 820-01236-A is a 661-12464 Intel i5 3.1GHz 6-Core 4GB board. The 820-01236-06 is a 661-12475 3.6GHz, 8-Core i9, Radeon Pro 575X 4GB board. Yes, that board should fit your iMac.
crwdns2934271:0crwdnd2934271:0 oldturkey03 crwdne2934271:0