Here's some interesting analysis:
Martin Pilkington said:The Mac "Pro"
... Finally, let's look at what the components actually cost. The table below shows costings for the parts, or equivalent versions, that make up the Mac Pro.
Part Retail Price Xeon W-3223 $749 4x8GB DDR4 2666MHz ECC RAM ~$240 Radeon 580X ~$300 256GB NVMe SSD ~$100 1500W Power Supply ~$350 Total: ~$1,739
With a total of $1739 that leaves us with over $4200 left to account for, and that's using retail prices, not the prices that Apple will get those parts for. And there isn't much left to account for, just the case, the motherboard, and the cooling. None of those come close to explaining away all the additional cost, and largely goes to prove that Apple has a lot of leeway to have started the Mac Pro at a lower price if it really wanted to.
... The problem for Intel (and by extension, Apple) is AMD's Threadripper 3970X. This is a 3.7GHz 32-core CPU. It beats out the W-3275M in Geekbench, managing scores of around 1300 on single core and 25-26000 on multi core. The performance alone wouldn't be an issue if not for the fact that the 3970X costs just $2000 retail, less than a 3rd of the upgrade cost of the W-3275M.