Asus mobo H81-m, XMP setting cannot be save

[traxxmy]

Hello to fellow brothers here. I recently upgrade my Asus k31AD ram from supplied single channel (4gb kingston 1600) to dual channel using corsair vengeance 1600 4gb each stick. But why now my ram speed is trottle down to 1333 only. I try enable XMP but it cannot be save. Each time i restart computer,the xmp would back to "disable". I try using one stick and restore mobo default setting but nothing work. Is there anything more i can set?. Thank you.

http://imgur.com/a/ptGTh

 

[traxxmy]

After almost a week of troubleshooting and get back to the original RAM owner, now i know why i have this issue. The problem is the previous owner bought the RAM separately(don't know how long apart). One RAM have XMP v1.3 while another with XMP v1.2 i suspect this why my XMP setting cannot be save upon exit UEFI BIOS. It's a very stupid mistake i made and not asking before purchase the RAM as i assume the previous owner by the RAM in pair. Hope i also help other that have same problem.