HyperX Memory HyperX 1GB 675MHz DDR2 2pk vs Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4

Key differences

The Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4 has 1.5 GB more internal memory than the HyperX Memory HyperX 1GB 675MHz DDR2 2pk (2 GB vs 0.5 GB). The HyperX Memory HyperX 1GB 675MHz DDR2 2pk has 1 more CAS latency than the Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4 (4 vs 3). The Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4 has 8 bit more memory bus than the HyperX Memory HyperX 1GB 675MHz DDR2 2pk (72 bit vs 64 bit). Only the Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4 has ECC.

• Internal memory
  • Memory HyperX 1GB 675MHz DDR2 2pk:0.5 GB
  • 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4:2 GB
• ECC
  • Memory HyperX 1GB 675MHz DDR2 2pk:No
  • 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4:Yes
• CAS latency
  • Memory HyperX 1GB 675MHz DDR2 2pk:4
  • 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4:3
• Memory bus
  • Memory HyperX 1GB 675MHz DDR2 2pk:64 bit
  • 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4:72 bit
• Check width
  • Memory HyperX 1GB 675MHz DDR2 2pk:8 bit
  • 4GB 400MHz DDR2 ECC Registered CL3 DIMM (Kit of 2) Dual Rank, x4:4 bit