Archive for January 7th, 2016

by Tom Nelson

Depending on the age of your Mac, it contains a small amount of special memory called NVRAM (Non-Volatile RAM) or PRAM (Parameter RAM). Both store settings used by your Mac to control the configuration of various systems and devices.

The difference between NVRAM and PRAM is mostly superficial. The older PRAM used a small dedicated battery to keep the RAM power up at all times, even when the Mac was disconnected from power.


Image courtesy of Rama

The newer NVRAM uses a type of RAM similar to the flash-based storage used in SSDs to store the parameter information without the need for a battery to keep it safe.

Aside from the type of RAM used, and the name change, both serve the same function of storing important information your Mac needs when it boots up or accesses various services.

Read more on About: Macs.

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