mac pro

Hi, My wife's Octocore Early 2008 Mac Pro is finally on its last legs. I've lovingly replaced: the RAM sliders, added RAM, replaced the GPU with a 7950 Mac Edition, added an SSD, and swapped out the PSU, but its starting to have trouble turning itself on, going to sleep, and when it is on it...

Just got a Geforce 980 Ti and 4k tv for my old MacPro 2008. 4k image is too small, and no controls for scaling, so trying to use SwitchResX, but it now says no custom anything in OSX 10.11.6 (can't update further) without first disabling SIP which seems to require CMD R at boot. Unfortunately...

A couple weeks ago my mid-2010 Mac Pro started getting extremely slow at times. Restarting would temporarily fix it, until one day it wouldn't get past the apple logo progress bar screen. So I took it in and Apple ran a diagnostic and told me that it's unlikely to be the HDD but "something else"...