Thanks to iFixit for sponsoring todays video! If you're working on literally any Mac repair you definitely need to check out their repair guides, tools, and parts! https://iFixit.com/lukemiani

In today’s video I’ll be trying to fix a beleaguered 2009 4,1 Mac Pro that I got for free – with some issues. We’ll go through troubleshooting, quite a few parts, and definitely some repairs!

Check out iFixit guides for Mac Pro: https://www.ifixit.com/Device/Mac_Pro...
Pro Tech Toolkit: https://amzn.to/3bYIzdM

Mac Pro RAM upgrade: https://amzn.to/3BYzluS
Long screwdriver for taking off heatsinks: https://amzn.to/3iaZzSQ
Metal GPU support and Mojave installation: https://support.apple.com/en-us/HT208898

CPU compatibility: https://forums.macrumors.com/threads/...

4,1 to 5,1 Firmware patch: https://www.ifixit.com/Guide/How+to+U...

*Graphics clarification: if it was confusing in the video, by default you can use a card with up to 225W TDP; the slot and each of the 2 mini 6-pins can supply 75W each. If I had used a mini 6 to 8 pin adapter, it would try to draw 150W from one connector- you can easily fry the board with that. If your card is an 8 pin you need to draw power from both 6-pins. if your card has 2 6-pins you need to use 2 mini 6 to 6 adapters, not a mini-6 to dual 6-pin. If you want to use a card that's over 225W (Vega 64, Radeon VII) you'll need to mod the PSU. A Radeon 5700 xt draws 225 so that's the most powerful card you can run without modding.

See this resource for installing the Pixlas PSU mod:https://thehouseofmoth.com/mac-pro-pi...


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