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Level 1

5 points

Is it true it's not good to update to the latest OS X?

I took a 21.5" Mid 2011 iMac to an Apple Authorised Service Provider. I was using the latest OS (Sierra) and they installed Yosemite on the new Hard Drive (I had to replace my old one.) They told me "old" iMacs shouldn't use the new OS because they "can't run it."
I'd like to update the OS (I liked Sierra) but I'm worried that it might decrease performance or something like that.

I was also told I would be able to rate the service I received later because it's a new Service Provider, but that never happened (I didn't get an e-mail asking me or anything similar.)

iMac (21.5-inch Mid 2011), OS X Yosemite (10.10.5)

Posted on May 21, 2017 11:26 PM

Best reply

MichelPM

Level 10

81,062 points

Posted on May 22, 2017 2:28 PM

Those techs didn't know what they were talking about! Period!

Your year and model iMac can run the latest macOS Sierra just fine.

The only caveat is that it may not run as well with a minimum of RAM.

Newer Mac OS versions like a base minimum of 8 GBs of RAM, now.

Your year and model iMac can take, at least. 16 GBs of RAM and if it is an i5 or i7 CPU, that 2011 iMac model can take up to 32 GBs of RAM.

You MUST use THE EXACT RAM that your model iMac is spec'd for.

Correct and reliable Mac RAM can ONLY be purchased from online Mac RAM sources Crucial memory (crucial .com) or OWC, aka, Other World Computing (macsales.com).

When buying RAM for Macs from Crucial memory, purchase ONLY directly from the Crucial memory website. NOT from some other online source.

Good Luck!

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