4x Sticks of 8GB Samsung PC3L 10600
4x Sticks of Hynix 2rx4 Pc3 10600
I have used all 8 of these sticks together in my Mac Pro 2012 5,1 and they work perfectly. Great condition, and tested and working. just remove old ram and put all 8 in the tray. reboot. Good-to-go