Will get better one for testing. Hdds are fastest I could get. WD purple.
WD Blacks > WD purples.
Yes, yes, I know, I just could not get 60 pcs of black WD in descent time.
So I choose purple over red ones. More intuition than knowledge.
I will try with different hardware, but I have SATA3 mb, SATA3 hdds, SATA3 cables... really nice case and cooling.
Will post my pictures soon, but I am a bit frustrated with results.
Would really really be thankful for setup help.
BTW. Stack of 8 pcs of these purple ones is noiseless. Like not working

Temps also ok, but I got Sunon fans just for the case...