Acquire one of these on eBay... replace the power supply with a beefier one and snag the proper adapter for it... add in your own drives and GPU... you get a pretty spiffy prebuilt in an elegant workstation tower!
Intel Core i7 6700 3.4GHz quad core processor
32GB DDR4 RAM (4x8GB)
SeaSonic SSR-550RM 550W 80 Plus Gold rated power supply
Lenovo 10 pin to 24-pin ATX adapter
GIGABYTE WINDFORCE NVIDIA GeForce GTX 1070 8GB PCIe video card
VANTEC UGT-M2PC200 M.2 to PCIe x4 adapter
HP EX950 512GB NVMe SSD
2TB Seagate 7200RPM hard drive
Windows 10 Pro 1909
Powered on... the blue LED is from the Vantec M.2 adapter
Side panel removed
BIOS system summary
System properties + specs
Windows 10 desktop
Not bad for a daily driver.