encrypted disk will slow my processor or not ?

skanner21 wrote:

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i've been told encrypted disk could slow data flow when using applications demanding a very high refreshment's frequency like online stream live apps...

That information is really OLD. You should question the expertise and timeliness of whoever told you that information.

MacOS does its disk encryption/decryption "on-the-fly", and there is no measurable slowdown.

Now if you want to convert an entire disk to/from encrypted, that process takes from all afternoon to a few days.

If your encrypted disk Fails, there will be no survivors -- you MUST have a backup to use Full Disk Encryption! Apple provides the backup software, Time Machine, for free. All you need to do is tell it what external drive to store onto, and "it just does it" automatically, at low priority, in the background, without interrupting your important work.

Using an encrypted disk will not slow down your system. The latest machines have embedded processors dedicated to disk encryption.

yes, BUT: it takes only a moment to choose which way you want, but all afternoon to finish the conversion from one to the other.

It also requires some temporary extra space on the drive. Your Mac will operate correctly as it converts, but there may be times (when you go after files that are in the midst of conversion) that you will see momentary slowness.

About encrypted storage on your new Mac - Apple Support

Use FileVault to encrypt the startup disk on your Mac - Apple Support

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My work uses PCs and wants encryption so BitLocker is standard. But I would not encrypt my primary disk and risk recoverability in times of trouble.

If you did not know about encryption before, better you start without, read and ask more, then convert later if you decide this new capability is necessary for you.

If I were King, I would not allow you to select encrypted drive until after you had made your first complete backup.

Do you have a drive to put your backup on yet? It is really not optional.

Your hard drive, encrypted or not, is many times faster than any online connection.