I wanted to buy another 4 GB RAM stick to install in a laptop and I thought I had all the info I needed to get the right kind: DDR3 PC3-10700 (667 MHz).
However, the salesperson at the computer place asked me what voltage I needed and it was then I came to learn that RAM even had different voltages to begin with.
He offered me both a 4 GB DDR3L 1.35 v stick and a 4 GB DDR3 1.5 v and told me I could easily return the unneeded one later.
After checking with both CPU-Z and Speccy, I learned the current RAM slot was occupied by a 4 GB stick that was 1.5v.
I then installed the new stick (which clearly states on both its package and on the sticker on the stick itself is 1.5v) in the second empty slot and then rebooted the computer.
Everything booted as normal and Windows Task Manager shows that the additional 4 RAM is present and recognized.
However, when I run both CPU-Z and Speccy again, they both tell me the voltage of the new stick is only 1.35 v. Huh??? How is this even possible? (And no, I didn’t install the other clearly marked low voltage stick by mistake.)
I’m also concerned that running two sticks with different voltages will fry something.
Any advice and expertise on this matter would be greatly appreciated.
