dLife_dt

I once sat in the cheapest model Herman Miller chair and even that was miles better than any chair I've ever sat in.

Well, if you have a DP port, I can confirm that this DisplayPort - USB-C cable worked for me!
 
(The only asterisk is that it doesn't provide sufficient power to my monitor (which is powered solely by USB-C). Fortunately my monitor has 2 USB-C ports, and I plugged my PC's charging cable into the other port. Curiously, plugging a USB-C cable from my desktop made the whole thing not work - it must've defaulted to looking for a signal from the wrong cable.)
 
So here is my 3950X 16-core "laptop"..... =P

Damn thats clean!  Great work.

With a portable monitor, ready to hit the road!

I wanted to write this up for the few people like me who need an sff PC with many cores and casual gaming and drone video editing...
And in the process, push back a bit on everyone saying SFF or 120mm AIO is horrid for high-power chips.
 
I'd been eying the 6L Velka 7 every since Linus Velka 3 video, and (PCIE cable aside) this case is a joy to build. Within these constraints, I settled for a 3950x, 32gb RAM, ASRock B550, and 2x1TB NVMEs on the MB. 
 
As <47mm of air cooling wasn't gonna cut it, I set up a 120mm ML120L AIO and a Noctua 120x15mm slim fan next to the EVGA 6gb GTX 1060.
Technically the case is 1cm too short to accommodate both of these, but with a trim to the GPU cover and the fan frame, things jive well.
[in that 1cm of overlap, the layering goes: 5mm of GPU board - 12mm of (trimmed) fan frame - 27mm of radiator - case wall]

Oh and I installed the PSU "upside-down" so the AIO fan blows not into a wall but into the PSU (and sometimes helped by the PSU fan).

 
In the end result, thermals under all-core loads limit the CPU to 4.1ghz @75C (in 23C ambient). Compared to the best-case scenario of 4.3Ghz, I'm only losing like 0.75 cores of performance. As a bonus I can tell laypeople I keep 16 computers in a lunchbox and play Cyberpunk. Even though it only gets a narrow niche of math problems between pencil-and-paper and the HPC cluster with its unpredictable queue line.
 

If you aren't allergic to jank:
https://www.ebay.com/itm/281226814944?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=281226814944&targetid=1492398653979&device=m&mktype=&googleloc=9007391&poi=&campaignid=15434361728&mkgroupid=138918423308&rlsatarget=pla-1492398653979&abcId=9300764&merchantid=8319554&gclid=Cj0KCQjwpv2TBhDoARIsALBnVnmKtiRCAx1giJJrFIN2_ecT0uWsfC3E_7cDQoG_KIvvhegzjpXuG68aAgw6EALw_wcB

Theres a third one as well: radiator thickness.  That thing is so small that you risk the radiator with fans attached bumping into the case door (I’m not sure if the pic is of the planned case or not.  If it is the problem would be the pump bloc)
Assuming the pic IS of the planned case:
Tempted to do a 120mm instead of a 240mm simply so that it will miss the pumpbloc.  Basically any AIO is going to have more hose than you need.  The issue is going to be either wadding the hose into the space or shortening the hoses.  Most hoses on AIOs won’t shorten.  They’re often more or less flexible sleeves inside tubular guards.  120mm AIO rads are generally longer than 120mm, but there seems to be some room.  There needs to be measurements I think.  This is gonna be tight.

If you have an APU with integrated graphics the USB-C port on the mobo might support display output but otherwise no. 
I always recommend to make sure that there's also an HDMI input next to the USB-Cs when buying such portable monitors.

PCPartPicker Part List
CPU: AMD Ryzen 9 3950X 3.5 GHz 16-Core Processor  ($723.99 @ Amazon) 
CPU Cooler: be quiet! Dark Rock 4 CPU Cooler  ($74.90 @ Amazon) 
Motherboard: MSI X470 GAMING PLUS MAX ATX AM4 Motherboard  ($99.99 @ Amazon) 
Memory: Crucial 32 GB (2 x 16 GB) DDR4-3200 CL22 Memory  ($123.99 @ Amazon) 
Storage: Western Digital SN750 500 GB M.2-2280 NVME Solid State Drive  ($64.98 @ Amazon) 
Video Card: MSI GeForce GT 710 1 GB Video Card  ($39.99 @ Amazon) 
Case: DIYPC Solo-T2-R Black USB 3.0 ATX Mid Tower Case  ($27.99 @ Newegg) 
Power Supply: SeaSonic FOCUS Plus Gold 650 W 80+ Gold Certified Fully Modular ATX Power Supply  ($116.99 @ Amazon) 
Total: $1272.82
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2021-02-08 14:01 EST-0500
 
Motherboard not good, no gpu, PSU bad, no ssd.
Check out above list for the complete set.
Yes 3950x will outperform dual xeon, with much lower power demand & thermals, and overclockable.

depends on the environment
- if you use it as a hardware test platform (swapping out hardware, so not your use case), a mechanical issue like a connector failing is the most likely thing to go wrong.
- if you have notably dirty power in your area, i'd say the power supply is likely to go out first.
- if the device will run notably hot (dusty environment, no regular cleaning, just in an exceptionally hot room) i'd say the motherboard is going to go first.
 
but all in all, computers failing is a matter of luck (or lack thereof..), you may have one that dies a day after the warranty runs out, or you may have that one box that stays alive for 25 years without any repairs.