Product comparison · 2 memory modules

Kingston Technology 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4 vs Kingston Technology Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM

Key differences

Internal memory
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:2 GB
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:0.25 GB
Memory form factor
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:240-pin DIMM
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:144-pin SO-DIMM
ECC
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:Yes
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:No
CAS latency
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:3
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:2
Memory bus
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:72 bit
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:64 bit
Check width
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:4 bit
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:8 bit
Memory voltage
- 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:1.8 V
- Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM:3.3 V

Differences highlightedShow differences only

Comparison of 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4, Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM
10 specifications	A Kingston Technology 2GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4 View product	B Kingston Technology Memory 256MB 100MHz Non-ECC CL2 Low Profile SODIMM View product
Features7 differ
Internal memoryDiffers	2 GB	0.25 GB
Internal memory typeKnown for one	DDR2	Unknown — not stated by the source
Memory form factorDiffers	240-pin DIMM	144-pin SO-DIMM
ECCDiffers	Yes	No
CAS latencyDiffers	3	2
Memory busDiffers	72 bit	64 bit
Check widthDiffers	4 bit	8 bit
Memory voltageDiffers	1.8 V	3.3 V
Internal memory access speedKnown for one	Unknown — not stated by the source	10 ns

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.