Upgrading RAM is such an easy affair that most of us just do it on our own.
Chances are, if you’re on a Mac, you’re also upgrading your RAM from third-party suppliers.
Which isn’t to say you should go out and pay the egregious prices for Apple’s RAM.
It just means you should keep those old sticks around as long as your warranty is good for.
Keep receipts and old RAM when upgrading| MacIssues
Photo byYutaka Tsutano.