Product comparison · 2 memory modules

Kingston Technology 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4 vs Kingston Technology 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4

Key differences

Internal memory
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:2 GB
- 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4:4 GB
Internal memory type
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:DDR2
- 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4:DDR
Memory form factor
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:240-pin DIMM
- 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4:184-Pin DIMM
CAS latency
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:3
- 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4:2.5
Check width
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:4 bit
- 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4:8 bit
Memory voltage
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:1.8 V
- 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4:2.5 V

Differences highlightedShow differences only

Comparison of 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4, 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4
9 specifications	A Kingston Technology 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4 View product	B Kingston Technology 4GB 333MHz DDR ECC Registered CL2.5 DIMM Quad Rank, x4 View product
Features6 differ
Internal memoryDiffers	2 GB	4 GB
Internal memory typeDiffers	DDR2	DDR
Memory form factorDiffers	240-pin DIMM	184-Pin DIMM
ECC	Yes	Yes
CAS latencyDiffers	3	2.5
Memory bus	72 bit	72 bit
Check widthDiffers	4 bit	8 bit
Memory voltageDiffers	1.8 V	2.5 V
Lead plating	Gold	Gold

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.