Kingston Technology 1GB DDR2 240-pin DIMM Kit vs Kingston Technology 4GB 1333 MHz ECC

Key differences

• Internal memory
  • 1GB DDR2 240-pin DIMM Kit:1 GB
  • 4GB 1333 MHz ECC:4 GB
• Memory layout (modules x size)
  • 1GB DDR2 240-pin DIMM Kit:1 x 1 GB
  • 4GB 1333 MHz ECC:1 x 4 GB
• Internal memory type
  • 1GB DDR2 240-pin DIMM Kit:DDR2
  • 4GB 1333 MHz ECC:DDR3
• CAS latency
  • 1GB DDR2 240-pin DIMM Kit:5
  • 4GB 1333 MHz ECC:9
• Buffered memory type
  • 1GB DDR2 240-pin DIMM Kit:Registered (buffered)
  • 4GB 1333 MHz ECC:Unregistered (unbuffered)
• Memory voltage
  • 1GB DDR2 240-pin DIMM Kit:1.8 V
  • 4GB 1333 MHz ECC:1.5 V
• Module configuration
  • 1GB DDR2 240-pin DIMM Kit:128M X 72
  • 4GB 1333 MHz ECC:512M X 72
• Memory type
  • 1GB DDR2 240-pin DIMM Kit:DDR2
  • 4GB 1333 MHz ECC:DDR3