Actual product may differ slightly in appearance.
Memory trade-in rebate
Send us your old memory when you upgrade and we’ll give you a rebate!
OWC Memory
- This Mac has four available memory slots.
- Install in pairs for best performance.
- Backed by an OWC Limited Lifetime Warranty.
Buying Options1066MHz DDR3 PC3-8500 — Maximum 32GB supported1
| 2GB (2GB x 1) | $9.97 | Learn more | Buy Now |
| 4GB (4GB x 1) | $24.99 | Learn more | Buy Now |
| 4GB (2GB x 2) | $18.99 | Learn more | Buy Now |
| 8GB (4GB x 2) | $47.88 | Learn more | Buy Now |
| 16GB (4GB x 4) | $93.88 | Learn more | Buy Now |
| 16GB (8GB x 2) Compatible with 27″ iMac11,1 only | $84.88 | Learn more | Buy Now |
| 32GB (8GB x 4) Compatible with 27″ iMac11,1 only | $168.99 | Learn more | Buy Now |
OWC Memory Upgrades For 27″ & 21.5″ iMac (Late 2009)
32GB
Up to 32GB memory1
Works with the following Model IDs
- iMac10,1
- iMac11,1
Rigorously in-house lab tested
Easy DIY install videos
OWC MaxRAM Certification
Lifetime advanced replacement warranty
