Building an r7 1700 based rig for gaming and (light) CFD

Hello kind techs!
I need some help here, I am based in the UK and I am building a home PC for some gaming and for running some light CFD, I have an r7 1700 on the way, because 16 threads for 250pounds!! I need to figure out, well, what will be the rest of the system. Graphics will probably be vega, the FLOP/pound ratio seems good, but time will tell and I am not in a hurry. I am looking for advice on a mobo and wifi chip if not included with the motherboard.
Requirements:
-> X370
-> good support in linux
-> Stable! (CFD keeps cpu pinned at ~100% on all cores for hours)
-> ECC support if possible
-> WiFi must get along with linux
-> As cheap as possible?

Also any suggestions for a ram kit are welcome! 16 G will do

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were you to go with vega, you might want to RMA the cpu/MOBO and go with one of the combo deals. Save 100 bucks on the same setup.

Motherboard:
Best x370 motherboards are probably the top end Gigabyte Aorus model, and the ASRock Taichi. They have good memory profiles and excellent power delivery by all accounts, and the Taichi is probably the best performance and feature set per dollar in the x370 range.

Wifi:
Literally any relatively modern intel chip that isn’t the intel wireless 7260. They all work great in linux except that one.

RAM:
If you absolutely need to go with ECC, you may want to wait and buy a TR4 system instead – the only ryzen mobo still advertising ECC support is the Taichi iirc.

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