your temps look fine.
here's my temps if it helps, tho im in wales and it's a tad cold at the mo.
View attachment 729229
those are the same temps I have.
wow, my fans spin like crazy and i still got higher temperatures!!!
It could be that one of your rivets has 'popped' keeping the northbridge heatsink in place. Do your fans spin high on first boot, or do they gradually get faster?
There are a few threads about this; try this link https://forums.macrumors.com/thread...at-sink-on-2009-mac-pro-2x2-26.1637891/page-4