Product comparison · 2 memory modules

Kingston Technology 2GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Single Rank x8 vs Kingston Technology 4GB DDR2-667 ECC Kit

Key differences

Internal memory
- 2GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Single Rank x8:2 GB
- 4GB DDR2-667 ECC Kit:4 GB
Memory layout (modules x size)
- 2GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Single Rank x8:2 x 1 GB
- 4GB DDR2-667 ECC Kit:2 x 2 GB
Buffered memory type
- 2GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Single Rank x8:Registered (buffered)
- 4GB DDR2-667 ECC Kit:Unregistered (unbuffered)

Differences highlightedShow differences only

Comparison of 2GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Single Rank x8, 4GB DDR2-667 ECC Kit
18 specifications	A Kingston Technology 2GB 667MHz DDR2 ECC Reg with Parity CL5 DIMM (Kit of 2) Single Rank x8 View product	B Kingston Technology 4GB DDR2-667 ECC Kit View product
Features3 differ
Internal memoryDiffers	2 GB	4 GB
Memory layout (modules x size)Differs	2 x 1 GB	2 x 2 GB
Internal memory type	DDR2	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latency	5	5
Memory bus	72 bit	72 bit
Buffered memory typeDiffers	Registered (buffered)	Unregistered (unbuffered)
Memory voltage	1.8 V	1.8 V
Module configurationKnown for one	Unknown — not stated by the source	256M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Other featuresidentical
Bus clock rateKnown for one	Unknown — not stated by the source	667 MHz
Error indicationKnown for one	Unknown — not stated by the source	ECC
Form factorKnown for one	Unknown — not stated by the source	240-pin DIMM
Internal memoryKnown for one	Unknown — not stated by the source	4096 MB
Memory layoutKnown for one	Unknown — not stated by the source	2 x 2048 MB
Chips organisationKnown for one	X8	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.