Kernel Panic on Mac Pro 1.1

To to a SMC reset on the Mac pro silver tower:

power down

remove the AC power cord.

Press the start button for a few seconds, then release. This drains the storage capacitors in the power supply.

re-install the AC power cord.

press the power button to power up normally.

That CPU 3 is the one detecting the error is total coincidence.

The problem is likely caused by the extensions shown, which all just came off your boot drive. If those are, in fact, the correct versions, they are likely damaged.

My recommendation would be to do a fresh install. The EFI partition will only be replaced when you do a fresh install, not an update.

a 16GB drive is not big enough. The Installer is about 5GB, but some of what it installs is compressed. I think of it as Installing about 12GB about 10.6.8, and much more as later versions come out, to the point where you should be thinking it is installing about 20GB where you want to end up.

When it is done Installing, it needs an additional 9GB to start up properly. If this has never worked this way before, that space shortfall could easily be the cause of the problem you are seeing.

I had a 32GB SSD drive for a while, which I bought when SSD drives first became available. It was fine for 10.6.8, but quickly became just too tight to be useful, so it had to be retired/used for troubleshooting and nothing more.

When you are having problems, it is always best to do what will keep things simple. Then change one thing at a time, and each problem is manageable. If instead you change everything all at once, and it becomes an unmanageable disaster.

You could easily use either of those SATA drives.

Your Mac is only directly supported for Installing up to 10.7. Beyond that, if you wish to go there, requires some hobbyist hacks.

The reason those older Mac Pro 2006 and 2007 models are not supported directly, as their firmware provides only 32-bit mode support. To add 64-bit firmware on top of the existing 32-bit firmware requires some hobbyist hacks, to run the additional firmware out of main store instead of control store. Each version you install requires the hacks be applied again. Luckily, you can jump straight to the version you want, without passing through others.

Look for a site whose acronym comes from "sixty four on thirty two" and there is a how-to that tells what to acquire and how to make it go, with references to other sites as well.

These hacks are not so ugly as building a Hackintosh -- a frankenstein Mac that uses no Apple components, because they require the 32-bit firmware, running on a genuine Mac, to get started. (Apple discourages our discussing the steps here, which is why the codified response.)

when Hardware is missing or behaving badly, try an SMC Reset.

Run an AHT hardware test but I am pretty sure it is related to the flash of the video card...

Drivers for the 5770 and 5870 are in 10.6.5 and later.