HP 1GB DDR2 400MHz vs HP 4GB DDR2-667

Key differences

The HP 4GB DDR2-667 has 3 GB more internal memory than the HP 1GB DDR2 400MHz (4 GB vs 1 GB). The HP 4GB DDR2-667 has 267 MHz more memory clock speed than the HP 1GB DDR2 400MHz (667 MHz vs 400 MHz). Memory layout (modules x size): 2 x 0.5 GB on the HP 1GB DDR2 400MHz, 1 x 4 GB on the HP 4GB DDR2-667.

• Internal memory
  • 1GB DDR2 400MHz:1 GB
  • 4GB DDR2-667:4 GB
• Memory layout (modules x size)
  • 1GB DDR2 400MHz:2 x 0.5 GB
  • 4GB DDR2-667:1 x 4 GB
• Memory clock speed
  • 1GB DDR2 400MHz:400 MHz
  • 4GB DDR2-667:667 MHz