Dual rank and single ranked RAM in a computer (please help! Thanks!)

[leyanne.elkhodair]

CPU Z says that my memory is using dual channel, and one slot of RAM is using 8GB dual - ranked RAM from Samsung (1.35v , PC3 12800, DDR3, 800 MHz max bandwidth), and the other slot of RAM is using 4GB single ranked RAM from Crucial ( 1.35V, DDR3, PC3 12800, max bandwidth 800MHz). I was just wondering if the differences in the rank of the RAM in each slot will retard overall performance, and also whether dual or single ranked memory is better too. Thanks in advance!

 

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post picture of the cpu-z memory spd tab of each ram .

 

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