Can a cpu cause a G4 QS power supply to fail?

Recently, my 2001 Power Mac G4 QS would not power up at all.

When I replaced the power supply it booted up as far as the grey apple screen. Then the multi-language "you must shut down " warning with text superimposed over it.The text began:

panic(cpu 0 caller 0x000B0504): "Uncorrectable machine check: pc = 0000000000705740, msr = 0000000000149030, dsisr = 400000000, dar =

I swapped out the OWC Mercury Extreme cpu with the original dual 800 MHz which shipped with the computer.

After running disk utility Permissions Repair and cleaning out the caches it seems to be fine.

Here's the question: Could the OWC cpu have caused the power supply to fail? Everything was fine when I shut down the computer the session before.

Another question: Is my OWC cpu toast? Their tech support said they would not service it, and they had no idea who could.

I opened up the failed power supply and it looks like something burst, there is white goo that has dripped inside it which seems to have come from near the mains input.

When I took the fan assembly and heat sink off of the OWC cpu the grease and thermal pad were dried up. I believe I put the cpu in circa 2009.

Any advice is most welcome, and thank you in advance for any help.