I just purchased and installed four of these 8GB 1.5V G-Skill modules into my W520 for a total of 32GB. Is works perfectly. http://www.newegg.com/Product/Product.aspx?Item=N82E16820231531 Thanks for the help everyone. I think the G-Skill 1.5v is the way I will go. I also plan on spending a lot of t...

I want to upgrade the memory on my new W520 but I can't find out what voltage RAM to get - I have tried searching the forum and the Lenovo specs. I find both 1.35v and 1.5v DDR3 1333 memory. For example: http://www.newegg.com/Product/Product.aspx?Item=N82E16820148469 or http://www.newegg.com/Product...