The artifacts come before any bios or windows screen. It's directly before boot up.

7th card plugged in > Artifacts before BIOS POST

7th card disconnected > Boots perfectly and without any errors and mines days after days.

Hi Guys,

I was wondering if anyone actually got a MSI Z87-G55 working with 7 GPU`s? If i connect 6x cards everything is great, but when adding the 7th card i only get a screen with all weird colored artifacts (see picture). I also checked the risers and changed every BIOS setting i could find but sadly no joy :-( . Very curious if someone succeeded because it seems some say it should work and others say it can`t.