HP 1GB DDR3-1066 vs HP 2GB PC2-6400s

Key differences

The HP 2GB PC2-6400s has 1 GB more internal memory than the HP 1GB DDR3-1066 (2 GB vs 1 GB). The HP 1GB DDR3-1066 has 4 -pin SO-DIMM more memory form factor than the HP 2GB PC2-6400s (204-pin SO-DIMM vs 200-pin SO-DIMM). The HP 1GB DDR3-1066 has 266 MHz more memory clock speed than the HP 2GB PC2-6400s (1066 MHz vs 800 MHz). Memory layout (modules x size): 1 x 1 GB on the HP 1GB DDR3-1066, 1 x 2 GB on the HP 2GB PC2-6400s. Internal memory type: DDR3 on the HP 1GB DDR3-1066, DDR2 on the HP 2GB PC2-6400s.

• Internal memory
  • 1GB DDR3-1066:1 GB
  • 2GB PC2-6400s:2 GB
• Memory layout (modules x size)
  • 1GB DDR3-1066:1 x 1 GB
  • 2GB PC2-6400s:1 x 2 GB
• Internal memory type
  • 1GB DDR3-1066:DDR3
  • 2GB PC2-6400s:DDR2
• Memory form factor
  • 1GB DDR3-1066:204-pin SO-DIMM
  • 2GB PC2-6400s:200-pin SO-DIMM
• Memory clock speed
  • 1GB DDR3-1066:1066 MHz
  • 2GB PC2-6400s:800 MHz