There's a Mac Pro 1,1 on craigslist in my area going for $300. What kind of upgrades can be done to beef it up to something more modern? Would it be even worth it to do any buy and and upgrade it?
Probably comes with 2 - Dual Core 2.66ghz processors. You can swap it for 2 - dual core 3.0ghz processor or (as most do) add in 2 - quad core processors (most use the 2.66ghz or 3.0ghz) to get to 8 cores (check ebay for used).
You can upgrade it to 32GB of RAM; however, the RAM used in the 1,1-3,1 Mac Pros is pricey (might want to check used).
It has only PCIE 1.0, so superfast GPUs might be starved for bandwidth.
It doesn't have USB3.0, but that could be added with a card...
It doesn't have Thunderbolt and that can't be added...
It only has SATAII, so you have to go PCIE to max the SSD's bandwidth.
Remember you only have 4 PCIE slots, so if you have a GPU, a USB 3.0 card, a PCIE SATA card, you are limited to only one PCIE slot left.....
Frankly, I have a 1,1 and I wouldn't buy another one at this point. They are 8 year old computers. At what point is there a catastrophic failure? If you were given one, sure. But to spend money seems like you are just throwing money away.
Just my .02 worth....