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Apple iMAC AIO 27" A1312 Late 2009 Desktop Intel Logic Board LGA1156 820-2733-A
This listing is for a Genuine Apple Logic Board (820-2733-A) designed specifically for the
27-inch iMac A1312 – Late 2009 model featuring the LGA1156 CPU socket.
This board is fully tested for:
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System boot and macOS installation
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USB / FireWire / Ethernet ports
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RAM slot integrity
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GPU slot and display output
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Audio and thermal sensors
Ideal replacement for failed 2009 iMac logic boards that require the LGA1156 layout.
Not compatible with any 2010 or 2011 A1312 iMac models.
⚙️ Specifications:
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Brand: Apple
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Model: iMac 27-inch (Late 2009)
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Model Number: A1312
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EMC: 2309
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Logic Board Part Number: 820-2733-A
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CPU Socket: LGA1156 (supports Core i5 / Core i7 Lynnfield processors)
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Graphics Support:
• ATI Radeon HD 4670
• ATI Radeon HD 4850 -
RAM: DDR3 1066/1333 MHz (up to 16GB)
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Ports:
• USB 2.0
• FireWire 800
• Mini DisplayPort
• Ethernet
• Audio in/out -
Condition: Used – Fully Tested & Working
✴️ Compatibility & Additional Information:
🔹 Compatible ONLY with:
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iMac (27-inch, Late 2009)
• Model A1312
• EMC 2309
• CPU socket type: LGA1156
🔹 Not Compatible With:
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iMac (27-inch, Mid 2010) – A1312 (uses LGA1156 but different board configuration)
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iMac (27-inch, Mid 2011) – A1312 (uses LGA1155 CPU & different logic board)
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Any A1311, A1418, A1419, or 2012+ iMac
🔹 Important Buyer Note:
This logic board works ONLY with Late 2009 A1312 models that use LGA1156 CPUs.
Please confirm your CPU socket type before purchasing.
Installation:
Professional installation recommended due to thermal sensors and GPU alignment.
⚠️ Notes:
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No firmware or MDM lock.
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CPU, GPU, RAM, and heatsink not included.
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Fully verified with Apple diagnostics.
90-Day Warranty
All products sold by NextGenPCParts are backed by a 90-day limited hardware warranty from the date of purchase. This warranty covers defects in materials or workmanship under normal use.
What’s Covered
- Manufacturing defects
- Hardware or component failures (logic board, screen, SSD, GPU, etc.)
- Performance issues not caused by misuse
What’s Not Covered
- Physical or cosmetic damage after delivery
- Improper installation, mishandling, or liquid exposure
- Software or firmware issues (including iCloud/MDM locks)
- Normal wear and tear or unauthorized modifications
How to Claim
To start a warranty claim, email support@nextgenpcparts.com with your order number, a brief description of the issue, and photos or videos if available.
Once reviewed, we’ll repair, replace, or refund the item at our discretion.
📘 Read full warranty terms: View Terms & Conditions