Just built this one for a friend of mine. Very simillar to my secondary rig in terms of parts. Most expensive components are bought second hand, wanted to maximize price/performance.
CPU: R7 5800X3D(sealed, but bought as "used")-$225
CPU cooler: Scythe Fuma II(new) - $45
Mobo: Gigabyte B450 aorus elite with a non-working ARGB connector - $30
GPU: XFX RX 6800 QICK 319, good condition, did a clean, repaste -$310
RAM: 32 GB ddr4(2x16) gskill ripjaws V 3600 cl18(new) - $65
PSU: Seasonic Focus PX-850(new) - $130
Case: Lian Li Lancool II Mesh(new, old stock) - $75
Storage: 970 evo plus 1tb + crucial mx 500 1tb - free from his old build
Fans: 3x ARCTIC P12 front intake($25)+ 2x noctua s12b redux exhaust(free from my stash).
Currently doing final testing + tuning. UVed the x3d and brought the ram to 3800 cl17 @ 1.4V. UVed the RX 6800 as well, running 0.895V on the core at stock clocks. Cooler is an absolute monster on this... GPU is freezing in Furmark, 51C max gpu temp with 65C on the hotspot and memory at 67C, pretty impressed with xfx here.
Cable management could've been cleaner, but I'm too lazy to try harder.
Took me ages to clean the used stuff, but here we are.
Oof and almost forgot... flipped the 3 fans from the lian li case for $25 too.
Quite happy on how it turned out, especially from a value point of view.