Mixing RAM in new 27inch 5k?

[CelestialToys]

No I'm pretty sure I'm right

I noticed that you edited your original post so that you got the acronym correct. Whilst you're not wrong about the benefits of ECC RAM what you still fail to realise is that it won't work in the iMac because the iMac doesn't support it.

 

[WilliamG]

Don't mix two different frequencies of RAM. It can cause extreme issues in the prevention of errors in the code on your Mac. You could potentially crash your Mac and loose thousands of dollars or loose all of your apps and data on the computer. Only buy the same kind of RAM for the entire Mac. I would recommended ECC memory which stands for extreme code correctness which can automatically fix bugs in bad programs for you which actually improves the stability of the Mac.

I actually took a computer operations in business and microsoft office class in high school last year so I am very educated on these types of machines. I also build custom pcs all by myself.

From Apple's site here: https://support.apple.com/en-us/HT201191

"DIMMs with any of the following features are not supported:

• Registers or buffers
• PLLs
• Error-correcting code (ECC)
• Parity
• Extended data out (EDO) RAM"

---

Guys, don't feed the troll.