iMac (Retina 5K, 27-inch, 2020)
Our verdict
Carry on.
It’s fully supported. There’s nothing to rescue.
I
Keep using it
It runs macOS Tahoe 26 and receives every security update Apple ships.
II
When the time comes
Apple Trade In or a private sale — this model still holds real value.
SupportedTops out at macOS Tahoe 26.
The record
Introduced
2020
Model identifier
iMac20,1, iMac20,2
Chip
Intel Core i5/i7/i9 Comet Lake
Architecture
Intel
Latest official release
macOS Tahoe 26
With OpenCore Patcher
Not applicable
Security updates
Current — receiving all updates on macOS Tahoe.
Apple hardware status
Current
Data confidence
high
Common questions
What is the newest macOS for the iMac (Retina 5K, 27-inch, 2020)?
The iMac (Retina 5K, 27-inch, 2020) officially tops out at macOS Tahoe 26.
Is the iMac (Retina 5K, 27-inch, 2020) still getting security updates?
Yes — it runs the current release and receives every security update Apple ships.
Is the iMac (Retina 5K, 27-inch, 2020) vintage or obsolete?
Neither — Apple still services this model.
Same shelf