The CPU is vendor locked to Dell, so are the Lenovos, you won't be able to use it in any other motherboard outside of their respective product lines. On top of that and unlocked Threadripper Pro by default will automatically lock to whatever Vendor board it is used on.
I'd suggest looking at the Asus ProArt graphics cards for chassis like this one. It's a 2.5 slot card, instead of a 3+ slot, and an inch shorter. You'll still have to modify the case cover to remove the PCIe 'holder' , but you won't be restricting airflow within the case as much as with the XLR8, and gives you some clearance for routing the power cables
I got a Dell Precision 7875 and installed the Inno3D GeForce RTX 4070 Ti SUPER TWIN X2 in it. It fits fine and runs quiet. Make sure your graphics card is not too high and not too long. If the card is high it cannot have power connectors on the top. The mentioned Inno3D is low enough to have it's power connector on top. Workstation cards usually have the power connector at the back of the card. My model has a 1350W power supply and 4x 8 pin PCI-e power connectors.
the stickers on basically all NVMe SSDs are technically thermal pads, and help with cooling. you'll see it if you take the sticker off and see the reflective metal underside. don't take it off, but if you do you won't take a flash chip with it.
Unfortunately? Why is unfortunate that this system has a ThreadRipper Pro? Our marketing team uses these machines for rendering, previously they used a PC workstation, a render now on their ThreadRipper Pro is done in 4 ~ 5 faster than the intel.
This 12VHPWR connector is such a bad invention by NVIDIA. About stickers on the SSDs - they are actually made of of something that conduct heat much better than regular plastic. I've seen a video with some test with them staying or being removed. Really depend on what are these stickers made of. I think i'd leave them intact. Video is in polish language if you want. I believe auto generated speech to text translation can be enabled: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-AZ8vbKf_zxI.html
Just found your channel - Excellent content, nice to see modifications to Dell Workstations to fit in Nvidia Big Boi GPUs - would be cool to see if you can get a PCI extension or riser in the case to make use of the "covered" slots from the GPU.
Your graphics card uses a flow-thru fan/sink that is partially blocked by the Dell Precision shroud. It would likely perform better thermally if you cut out an inch or so off the bottom of the shroud to allow the graphics card an easier path to send heat in to the shroud’s flow.
The bracket that holds the gpu cables is also used to hold the other end of a gpu so it does not sag. It needs a special bracket that attaches to the gpu and hooks to the bracket in front of the case fan.
I'd say the labels should come right off. I doubt they'd use such strong glue that would rip components off of your SSD, that just sounds like a horrible idea.
Then again, it's probably not worth the trouble now. I don't think it matters that much in terms of performance, except maybe for long, continuous load. So realistically, you should be fine.