HP 4GB DDR2-667 vs HP 8GB DDR-400

Key differences

The HP 8GB DDR-400 has 4 GB more internal memory than the HP 4GB DDR2-667 (8 GB vs 4 GB). The HP 4GB DDR2-667 has 56 -pin DIMM more memory form factor than the HP 8GB DDR-400 (240-pin DIMM vs 184-pin DIMM). The HP 4GB DDR2-667 has 267 MHz more memory clock speed than the HP 8GB DDR-400 (667 MHz vs 400 MHz). Memory layout (modules x size): 1 x 4 GB on the HP 4GB DDR2-667, 1 x 8 GB on the HP 8GB DDR-400. Internal memory type: DDR2 on the HP 4GB DDR2-667, DDR on the HP 8GB DDR-400.

• Internal memory
  • 4GB DDR2-667:4 GB
  • 8GB DDR-400:8 GB
• Memory layout (modules x size)
  • 4GB DDR2-667:1 x 4 GB
  • 8GB DDR-400:1 x 8 GB
• Internal memory type
  • 4GB DDR2-667:DDR2
  • 8GB DDR-400:DDR
• Memory form factor
  • 4GB DDR2-667:240-pin DIMM
  • 8GB DDR-400:184-pin DIMM
• Memory clock speed
  • 4GB DDR2-667:667 MHz
  • 8GB DDR-400:400 MHz