I've got a thread whereby the OP is using 1.35v ram, x 4gb's Crucial DDR 3 1600 and has just stated that "the Ivy Bridge Cpu's don't do well with anything higher than 1.5v ram (it voids the warranty)"
i5 3570k
Asus P8z77-v LK
http://ca.asus.com/en/Motherboards/Intel_Socket_1155/P8Z77V_LK/#specifications
Thread reference -
http://www.tomshardware.co.uk/answers/id-1667147/partial-psu-failure.html
i5 3570k
Asus P8z77-v LK
http://ca.asus.com/en/Motherboards/Intel_Socket_1155/P8Z77V_LK/#specifications
Thread reference -
http://www.tomshardware.co.uk/answers/id-1667147/partial-psu-failure.html