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Apple iMac 21.5" A1311 2011 Radeon HD 6750M 512MB Video Card GPU w/ Heatsink
$39.99
This listing is for a Genuine Apple / AMD Radeon HD 6750M 512MB Video Card (GPU) with original heatsink assembly, compatible with iMac 21.5-inch A1311 (EMC 2428, Mid 2011).
The GPU has been fully tested, including:
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Booting to macOS
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Stress test under load
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Thermal performance and fan curve
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External monitor output
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Artifact-free video playback
This is an ideal replacement for an iMac suffering from:
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No display
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Artifacts or lines
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GPU crash/restart issues
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Overheating GPU
⚙️ Specifications:
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Brand: Apple / AMD
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Model / Chipset: Radeon HD 6750M
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VRAM: 512MB GDDR5
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Form Factor: iMac 21.5" A1311 dedicated GPU module
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Includes: GPU + Apple OEM heatsink
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Condition: Used – Fully Tested & Working
✴️ Compatibility & Additional Information:
🔹 Compatible iMac Model:
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iMac (21.5-inch, Mid 2011) – A1311, EMC 2428
🔹 Compatible GPU Options for This Model:
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Radeon HD 6450M (256MB)
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Radeon HD 6750M (512MB) ← this listing
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Radeon HD 6770M (512MB)
🔹 Notes:
This GPU is specifically for 21.5-inch iMac A1311 and does not fit 27-inch models or other years.
Installation Tip:
iMac GPUs require precise thermal paste application and proper heatsink tightening. Professional installation is recommended.
⚠️ Notes:
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Pulled from a fully working machine before part-out.
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No artifacts, no freezing, no display corruption.
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Heatsink included; thermal paste should be replaced during installation.
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Not compatible with A1312 (27"), A1418, or A1419 iMacs.
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