Precision 7730 Ubuntu Overheating

Dell Laptop 7730 XCTO BASE

Xeon E-2186M 

Radeon Pro WX 7100

32 Gig Ram, 512 M.2 SSD, Ubuntu 16.04 (and later 18.01), BIOS, Thermald and intel-microcode up to date, using a USB powered dual fan coolerpad.

"Core temperature above threshold, cpu clock throttled (total events = 1)"

Bought system new from Dell, noticed after a few days I was getting frequent throttling in dmesg. Began watching closely. Multiple calls and emails to tech support. Updating BIOS didn't help. Installed 18.01 same problem. After about a month tech arrived on site to replace MB. New (?) MB would not post, DOA. Put original MB back in. Another week of emails to tech support. Was sent a new system, same specs. Overheated and was throttling while Ubuntu was being set up! Updated BIOS. More calls to tech support. Installed Psensor and I'm now keeping constant watch of temps and fan speeds. It appears that when temps spike it can often take 5 seconds for fans to turn on. All this is happening with just Psensor, email and browser running (Evolution and Brave).

The next tech got my problem mixed up with another and accidentally had me install Windows. After an entire day of trying to get the massive updates installed without a blue screen I gave up. Then when I restored the Dell 16.01 OS I had a Dell icon on the desktop, Dell was root and of course I didn't know the password! Gave up on that after two tries and installed 18.04 which seems stable.

When TurboBoost is turned off in BIOS the temps usually run in the 50C range. With TurboBoost on it will often run up to 92C and at times I've seen 101. On occasion it will run most all day without heating then for no apparent reason begin running in the 80s and 90s again.

Now they want this machine to test. My fear is that to "test" they will have to let it cook itself. If I get these temps with what very little load I'm putting on it I'd hate to think what would happen if it was stressed!!

I'm no expert by a long shot but have had many years of experience repairing, building, loading and some programming. Seems to me this HAS to be a BIOS issue. The only hardware fix might be re-pasting with something like liquid metal and even that shouldn't change things that much. I've been working on this every day for over a month and a half I could really use some additional help  :-O

So my questions are:

Fans are controlled by the BIOS, is that not correct? At what temps should the fans start and then begin to ramp? Are there any plans to address this problem with an updated BIOS? I hear rumors that Dell will soon officially roll out 18.04 since 16.01 is nearing end of life, is that right? Would an i7 system run cooler? (Sounds like the i9 runs quite hot as well). What is the Dell install password and how do I get around that restore problem if it happens again?

Canonical could only suggest I look into installing i8kutils. Any thoughts? Seems quite complicated and possibly dangerous!

I read that some are complaining that their systems are too loud, I REALLY wish this was loud at least the fans would be keeping things cool!

BTW Why isn't there a Precision board in Dell Laptop Community and why can't I start one?