Product comparison · 2 memory modules

Kingston Technology 2GB 400MHz DDR2 Non-ECC CL3 DIMM vs Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4

Key differences

Internal memory
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:2 GB
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:4 GB
Memory layout (modules x size)
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:1 x 2 GB
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:1 x 4 GB
ECC
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:No
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:Yes
Memory bus
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:64 bit
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:72 bit
Check width
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:8 bit
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:4 bit
Buffered memory type
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:Unregistered (unbuffered)
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:Registered (buffered)
Module configuration
- 2GB 400MHz DDR2 Non-ECC CL3 DIMM:256M X 64
- 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4:512M X 72

Differences highlightedShow differences only

Comparison of 2GB 400MHz DDR2 Non-ECC CL3 DIMM, 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4
20 specifications	A Kingston Technology 2GB 400MHz DDR2 Non-ECC CL3 DIMM View product	B Kingston Technology 4GB 400MHz DDR2 ECC Registered CL3 DIMM Dual Rank, x4 View product
Features7 differ
Internal memoryDiffers	2 GB	4 GB
Memory layout (modules x size)Differs	1 x 2 GB	1 x 4 GB
ECCDiffers	No	Yes
Memory busDiffers	64 bit	72 bit
Check widthDiffers	8 bit	4 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory rankingKnown for one	Unknown — not stated by the source	2
Module configurationDiffers	256M X 64	512M X 72
Other featuresidentical
Chips organisationKnown for one	Unknown — not stated by the source	X4
Error indicationKnown for one	Unknown — not stated by the source	ECC
Internal memoryKnown for one	Unknown — not stated by the source	4096 MB
Memory layoutKnown for one	Unknown — not stated by the source	1 x 4096 MB

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.