Push the two levers outward to release the memory cage: Locate the two levers on the right and left sides of the memory cage.

A diagram on the underside of the compartment door shows the memory cage levers and the orientation of the DIMM.

Remove the compartment door and set it aside:

The memory compartment door will open as the button is pushed in.

Open the memory compartment door by pressing the small grey button located just above the AC power port:.Hold the sides of the computer and slowly lay the computer face-down on the towel or cloth.Place a soft, clean towel or cloth on the desk or other flat surface to prevent scratching the display.Disconnect the power cord and all other cables from your computer.If you've been using your iMac, wait ten minutes after shutting it down to let the internal components cool.Īfter you shut down your iMac and give it time to cool, follow these steps: Even when purchasing memory from Crucial only use the exact part numbers suggested when using the tools on their website to identify compatible memory.The internal components of your iMac can be warm. If I purchase memory from Crucial just based on the memory speed and pin count alone, most likely the memory will be incompatible and cause intermittent hard to troubleshoot problems. Crucial and OWC make it very simple to correctly identify the compatible memory modules which is one reason why many contributors will only recommend these two manufacturers/vendors. Since Apple doesn't publish this information, people must rely on the memory vendors to provide the exact part numbers which are compatible with any specific computer or motherboard. Besides the memory (aka bus) speed, there are several more important timings that are also critical for compatibility. Unfortunately Apple does not publish all the required memory specifications and most memory vendors no longer supply the extended specifications on their product pages.

Like, are mine right, or isn't it a surprise that my iMac runs bad with those? Well for me its not about the brand but about the exact specifications of the RAM modules.

Imac 27 late 2013 ram