The price is not nearly as bad as everyone wants to portray it, even against older model Mac Pros.
https://www.macworld.com/article/1167386/meet-the-new-mac-pro-about-the-same-as-the-old-mac-pro.html
The mid-2012 Mac Pro 5,1 with dual 2.4GHz Xeon E5645, 12GB of DDR3-1333MHz, 1TB HDD and Radeon 57770 1GB video card started at $3799.00 and went up from there.
SC score - 2207
MC score - 17039
http://browser.geekbench.com/macs/341
The single core was truly awful and the multi-core score wasn't too bad, but a 2019 13" MacBook Pro can run circles around both scores now for a $1000 less.
The GPU was pretty awful even when the 2012 was released and you were saddled with a spinning hard drive. I think the 512GB 2.5" SSD was a $1200 or $1600 upgrade on that thing, IIRC.
We don't know the benchmark for this new 8-core, but the current 3.2GHz Xeon W 8-core in the iMac Pro is -
SC - 5063
MC - 31231
http://browser.geekbench.com/macs/426
In the Macworld article there is a reference to a Mid-2010 Mac Pro that was the first 12-core model @2.66Ghz and it retailed for $4999.
You aren't going to approach the new Mac Pro, even the base model, no matter how much you mod a 5,1. with a giant GPU and a NVMe PCIe card.
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You need to adjust performance relative to the time.
Nope, sorry., green light means go...I went back and changed the CPU to the Xeon Gold 6244 (Cascade Lake) and the price dropped to $8,750.40, so now only $2,751.40 more expensive than the base Mac Pro.
Facepalm. You're doing life wrong at this point. Being intentionally obtuse doesn't win you arguments.
Gold 6244 is an utter odd ball in the line up. No way, no how Apple is using that. Switch to duel 6230 or something similar.