What's upgradable in a Mac Pro
Soon I'm going to get a job and try and save up for a Mac Pro. I'm pretty sure by the time I actually have the money, there'll be an updated one.
Anyway, I know this question has been asked a million times from n00bs like me, but I've never really found a good enough answer. So sorry if you feel this is spam.
What kind of stuff is upgradable in a Mac Pro?
I've seen the GPU being replaced, but are you limited to a few, or can you upgrade with almost any GPU?
I've seen the CPU being repalced, but again, are you limited to a few? Is it even built to do this? The video I saw looked a bit risky.
I know the memory and storage is definitely upgradable.
What else am I missing/is upgradable?
Also would it be possible to get an old Mac Pro and just upgrade it? I'd rather one that I can upgrade over the next few years.
Edit: Also, I'll only be saving up for the cheapest and lowest spec model, so can you add more cores? Remember, I'm still a n00b at this.
iMac, Mac OS X (10.6.8), 2010 21.5", 3.06GHz, 8GB RAM, 500GB