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Crucial

Crucial 8GB Kit (4GBx2) DDR3 RAM Upgrade for Apple iMac Mid 2010

★★★★★5.0 (1 reviews)

Double your 2010 iMac's RAM to 8GB with Crucial's PC3-10600 kit and eliminate the memory bottleneck that slows multitasking to a crawl.

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Overview

The Crucial 8GB Kit (2x4GB) for the Mid 2010 Apple iMac delivers PC3-10600 DDR3 memory running at 1333MHz across the 204-pin SO-DIMM form factor — the exact electrical and physical specification the Mid 2010 iMac's Intel Core i3 platform requires. What those numbers mean in practice: 1333MHz DDR3 at dual-channel offers roughly 21GB/s of theoretical peak bandwidth, and filling both slots to 8GB ensures the OS can keep active applications resident in memory rather than swapping to the mechanical hard drive that most of these machines still carry. The Non-ECC configuration is not a limitation here — it's the correct spec; this platform does not support ECC.

This kit is purpose-built for one task: squeezing the maximum usable performance out of a Mid 2010 21.5-inch iMac Core i3 before the machine becomes too constrained to run modern software comfortably. It's the right choice for users who want to extend the working life of this machine for web browsing, light photo editing, or office productivity without investing in a full replacement. At 8GB — the platform maximum — there is no further memory upgrade available, so this kit represents both the entry point and the endpoint of this upgrade path.

Key Features

204-pin SODIMM

DDR3-1333

Desktop/PC

Specifications

Memory Kit Size
8GB (4GBx2)
Memory Type
DDR3 RAM
Form Factor
204-pin SODIMM
Speed
DDR3-1333
Compatibility
Apple iMac Mid 2010
Category
Desktop/PC

Frequently Asked Questions

Yes. This kit is specifically validated for the Apple iMac 3.2GHz Intel Core i3 21.5-inch Mid 2010 model. It uses the 204-pin SO-DIMM form factor and DDR3-1333 (PC3-10600) spec that this iMac's memory controller requires — not the faster DDR3-1600 used in later models.
The Mid 2010 iMac shipped with 2GB in most configurations. Moving to 8GB removes the OS X/macOS memory pressure that forces paging to disk — a bottleneck that makes page loads, app launches, and tab switching feel sluggish. You'll see the biggest gains in Safari with multiple tabs, iPhoto libraries, and light video work.
It runs at DDR3-1333 (PC3-10600) natively, which is the rated maximum for this iMac's memory controller. No downclocking occurs — the kit is rated at the platform's ceiling.
Crucial provides online documentation, but the Mid 2010 21.5-inch iMac requires screen removal to access the SO-DIMM slots — unlike later models with a bottom-panel door. Factor this into your installation plan; it's doable but more involved than a typical laptop upgrade.
No. This kit is Non-ECC, which is the only type supported by the Mid 2010 iMac's consumer-grade Intel Core i3 platform. ECC is exclusive to Xeon-based workstation hardware.

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