Memory R720

Hi,

the my server r720 mount type

   Memory Device: #4354

   Location: "DIMM_A3"

   Manufacturer: "00CE00B300CE"

   Serial: "83BE31D2"

   Asset Tag: "02120663"

   Part Number: "M393B1K70DH0-YH9"

   Memory Array: #4096

   Form Factor: 0x09 (DIMM)

   Type: 0x18 (DDR3)

   Type Detail: 0x2080 (Synchronous, Registered)

   Data Width: 64 bits (+8 ECC bits)

   Size: 8 GB

   Speed: 1333 MHz

I want to bring the memory to 128GB with 8X16GB.

There are 3 types on the Dell site: http://accessories.euro.dell.com/sna/category.aspx?category_id=8136&c=it&l=en&s=bsd&cs=itbsdt1&mfgpid=5999286&p=1

Which should i take from 16GB?

Thank you.