What voltage do I need for the RAM in my Sony VAIO VPCSB1V9E?

by on April 6, 2012

Q: I have SONY VAIO VPCSB1V9E. There is 1x4GB memory integrated into motherboard (never seen anything like that before). I want to add 4gb more. I have scanned PC with Crucial utility so I now what would fit accept one thing – VOLTAGE. There two choices: 1.35v and 1.5v – which one to chose? CPU-Z and Speccy and HWM does not show voltage…
Please help