AC 20 opening older version PLN files

[Llian]

So, I understand AC 20 can open AC 17 PLN files....
What do I do with my project files created in 14?
Anyone any idea?

Should I save them to AC 17?

[mikas]

Erwin wrote:
Hey Llian, not sure about the current iMAC, the one I have at home is the last model before they went all fancy 5k screens, but I can upgrade RAM

^ That's still right with the newest, but only with a 27" iMac models. iMac 21,5" memory is soldered on the logic board. You have to buy RAM-upgrade at the time of purchase and pay Apples high prices. I would opt for i7 too. It gives approximately one third more rendering power (1,33 x i5) according to my findings. If you don't render a lot, I think i5 is a perfectly good choice. Fusion drive is ok. I would take 512 GB Flash though.

Processor swap (i5->i7) is possible with iMacs as DIY, but it is a really tedious task. Apple does not offer that as a service.

Is your 2010 iMac a 21,5" or 27" model? It should be good for El Capitan, even 2007 models are with 4GB. I don't think it's enough memory for ArchiCAD use, so you might want to consider buying some. The more the better, of course.

It's quite possible to upgrade the HDD to SSD. SSD will make a really big difference in overall speed. It's a more demanding job though, and I don't think Apple itself is offering to do that. Repair shops will do it for money.