Hi Brice, I am sorry to know about your issue.
I see that your motherboard has two SATA controllers (see Storage Interfaces in the specifications).
I wonder if it is possible to test the drives in the Intel® SATA controller (Intel® Z87 Express Chipset).
I also sent you a PM.
these drives have been in slot 0 and 1 of the Intel controller since i installed them and the story holds true for both drives, test fails at around 76-78% completion on the data integrity scan.
My BIOS is the latest version as well.
Are the drives setup in a RAID volume?
Are you using Intel® Rapid Storage Technology driver or Microsoft’s counterpart? Using the other one may help.
Does it make a difference if you disable the Marvell controller?
no, no raid. removed IRST and all is well. Thank you for your help. I actually think windows booted faster without IRST but i may be delusional.