Kingston Technology 1GB 1066MHz DDR3 ECC CL7 DIMM vs Kingston Technology 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8

Key differences

• Internal memory
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:1 GB
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:4 GB
• Memory layout (modules x size)
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:1 x 1 GB
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:1 x 4 GB
• Internal memory type
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:DDR3
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:DDR2
• CAS latency
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:7
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:5
• Buffered memory type
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:Unregistered (unbuffered)
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:Registered (buffered)
• Memory voltage
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:1.5 V
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:1.8 V
• Memory type
  • 1GB 1066MHz DDR3 ECC CL7 DIMM:DDR3
  • 4GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM Dual Rank, x8:DDR2