Wow thank you both guys for the useful info right here!
Do you think I can order only one board from that alibaba link for testing? Because it says minimum order quantity 10.
Also can I fit a Sapphire 580 Pulse on the slot which is blocked by the ATX connector?
I guess the Onda B250 is much more affordable in my situation then.
the zotac 1080ti mini fits let me check its length
pulse = 230mm
zotac = 219 mm
I will say the zotac has 25mm room
so the pulse at 230 would fit.
I think any card under 235mm fits