2-Power 16GB DDR4 RDIMM (2Rx4) vs 2-Power 4GB DDR3 DIMM

Key differences

• Internal memory
  • 16GB DDR4 RDIMM (2Rx4):16 GB
  • 4GB DDR3 DIMM:4 GB
• Memory layout (modules x size)
  • 16GB DDR4 RDIMM (2Rx4):1 x 16 GB
  • 4GB DDR3 DIMM:1 x 4 GB
• Internal memory type
  • 16GB DDR4 RDIMM (2Rx4):DDR4
  • 4GB DDR3 DIMM:DDR3
• Memory form factor
  • 16GB DDR4 RDIMM (2Rx4):288-pin DIMM
  • 4GB DDR3 DIMM:240-pin DIMM
• ECC
  • 16GB DDR4 RDIMM (2Rx4):Yes
  • 4GB DDR3 DIMM:No
• CAS latency
  • 16GB DDR4 RDIMM (2Rx4):15
  • 4GB DDR3 DIMM:9
• Memory clock speed
  • 16GB DDR4 RDIMM (2Rx4):2133 MHz
  • 4GB DDR3 DIMM:1333 MHz
• Buffered memory type
  • 16GB DDR4 RDIMM (2Rx4):Registered (buffered)
  • 4GB DDR3 DIMM:Unregistered (unbuffered)