Single or dual rank memory for T470?

My T470 came with 4 GB of RAM and so planning to add an 8GB stick.

Just wondering if it is better to get the dual or single rank. So basically trying to choose between these two Crucial sticks.

http://www.crucial.com/usa/en/ct8g4sfd824a

http://www.crucial.com/usa/en/ct8g4sfs824a

Any thoughts and other memory recommendations, if any, would be great. Thank you. :)
Kavit GunasAsked:
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nobusCommented:
there is no t470 model ???
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zvitamConsultantCommented:
Dual Rank will male sense only if you buy two identical SO-DIMMs and put it inside of the single SO-DIMM currently installed getting a total of 16GB.

If you are interested in buying only a single 8GB SO-DIMM getting a total of 12GB than go for the single rank.

The best option is to buy two identical dual rank SO-DIMMs since using different SO-DIMMs on the same laptop may cause compatibility problems.
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Kavit GunasAuthor Commented:
Decided to get the Crucial 16 GB dual rank! :) Thank you both for taking the time to write!!
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