Product comparison · 2 memory modules

Kingston Technology 2GB 667MHz DDR2 Non-ECC CL5 SODIMM vs Kingston Technology 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4

Key differences

Internal memory
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:2 GB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:4 GB
Memory layout (modules x size)
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:1 x 2 GB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 4 GB
Memory form factor
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:200-pin SO-DIMM
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:240-pin DIMM
ECC
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:No
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:Yes
Memory bus
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:64 bit
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:72 bit
Buffered memory type
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:Unregistered (unbuffered)
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:Registered (buffered)
Module configuration
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:256M X 64
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:512M X 72
Error indication
- 2GB 667MHz DDR2 Non-ECC CL5 SODIMM:No
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:ECC

Differences highlightedShow differences only

Comparison of 2GB 667MHz DDR2 Non-ECC CL5 SODIMM, 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4
20 specifications	A Kingston Technology 2GB 667MHz DDR2 Non-ECC CL5 SODIMM View product	B Kingston Technology 4GB 667MHz DDR2 ECC Fully Buffered CL5 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
Internal memory type	DDR2	DDR2
Memory form factorDiffers	200-pin SO-DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latency	5	5
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory rankingKnown for one	Unknown — not stated by the source	2
Memory voltage	1.8 V	1.8 V
Module configurationDiffers	256M X 64	512M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Other features4 differ
Chips organisationKnown for one	Unknown — not stated by the source	X4
Bus clock rate	667 MHz	667 MHz
Error indicationDiffers	No	ECC
Form factorDiffers	200-pin SODIMM	240-pin DIMM
Internal memoryDiffers	2048 MB	4096 MB
Memory layoutDiffers	1 x 2048 MB	1 x 4096 MB
Weight & dimensionsidentical
WidthKnown for one	67.6 mm	Unknown — not stated by the source

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.