RAM > DDR3 PC14900 1866MHz

Welcome to the Mac Upgrades DDR3 1866MHz (PC3-14900) RAM page. The SODIMM modules are used by 27" iMac 2015 models, and there are DIMM kits for the Mac Pro 2013 machines (note: these Mac Pros can be upgraded to 128GB of RAM by using slower 1333MHz modules, which are in their relevant section).

If you know the RAM you need, you can find it below. But it is important to choose the correct RAM for your Mac, and if you are unsure, our site is designed to make this process as simple as possible. We will have a detailed page on your exact Mac, which lists guaranteed compatible upgrades for it.

You can find your Mac's page by searching for your Mac in the box below. You can search by its serial number, or any other identifier (part number, EMC number, model identifier, etc.) or just by searching by keywords (eg: iMac 2020 3.1GHz). This will take you to a page where you can select your exact Mac (or straight to it, if your search is precise enough). This page will have RAM that we guarantee to be correct and compatible for your exact model.


Search for any Mac model. You can search by name and date, as well as any of various identifiers such as: serial number (Macs made before 2021), part number, model identifier, model number and EMC number.

To search for a serial number, enter the serial number on its own. Other identifiers and keywords can be combined.

You can also search for a macOS version to see all Macs compatible with it.

Once you have found your Mac, you will find detailed specs for it and see fully compatible products, repairs, and upgrades for your exact machine.

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 Kingston      Kingston DDR3L 1866MHz PC14900 SODIMM - 4GB - In Stock  £39.98 
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 Kingston      Kingston DDR3L 1866MHz PC14900 SODIMM - 8GB - In Stock  £73.78 
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 OWC      OWC 64GB Kit (4 x 16GB) DDR3 1866MHz PC14900 ECC REG DIMM RAM for Mac Pro Late 2013 *** Special Order Item, dispatch estimate: 10 working days  £194.27 
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