Product comparison · 2 memory modules

Kingston Technology 1GB DDR2-667 ECC vs Kingston Technology 2GB 400MHz ECC Single Rank Kit

Key differences

Internal memory
- 1GB DDR2-667 ECC:1 GB
- 2GB 400MHz ECC Single Rank Kit:2 GB
Memory layout (modules x size)
- 1GB DDR2-667 ECC:1 x 1 GB
- 2GB 400MHz ECC Single Rank Kit:2 x 1 GB
Internal memory type
- 1GB DDR2-667 ECC:DDR2
- 2GB 400MHz ECC Single Rank Kit:DRAM
CAS latency
- 1GB DDR2-667 ECC:5
- 2GB 400MHz ECC Single Rank Kit:3
Buffered memory type
- 1GB DDR2-667 ECC:Unregistered (unbuffered)
- 2GB 400MHz ECC Single Rank Kit:Registered (buffered)
Bus clock rate
- 1GB DDR2-667 ECC:667 MHz
- 2GB 400MHz ECC Single Rank Kit:400 MHz
Internal memory
- 1GB DDR2-667 ECC:1024 MB
- 2GB 400MHz ECC Single Rank Kit:2048 MB
Memory layout
- 1GB DDR2-667 ECC:1 x 1024 MB
- 2GB 400MHz ECC Single Rank Kit:2 x 1024 MB

Differences highlightedShow differences only

Comparison of 1GB DDR2-667 ECC, 2GB 400MHz ECC Single Rank Kit
19 specifications	A Kingston Technology 1GB DDR2-667 ECC View product	B Kingston Technology 2GB 400MHz ECC Single Rank Kit View product
Features5 differ
Internal memoryDiffers	1 GB	2 GB
Memory layout (modules x size)Differs	1 x 1 GB	2 x 1 GB
Internal memory typeDiffers	DDR2	DRAM
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latencyDiffers	5	3
Memory bus	72 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltage	1.8 V	1.8 V
Module configuration	128M X 72	128M X 72
Memory type	DDR2	DDR2
Lead platingKnown for one	Unknown — not stated by the source	Gold
Other features4 differ
Chips organisationKnown for one	Unknown — not stated by the source	X4
CompatibilityDiffers	A0515205 (DELL); A0515356 (DELL); A0690294 (DELL)	S26361-F3072-L522 (Fujitsu)
Bus clock rateDiffers	667 MHz	400 MHz
Error indication	ECC	ECC
Form factor	240-pin DIMM	240-pin DIMM
Internal memoryDiffers	1024 MB	2048 MB
Memory layoutDiffers	1 x 1024 MB	2 x 1024 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.