Product comparison · 2 memory modules

Kingston Technology 4 GB DDR2 SDRAM Memory Module vs Kingston Technology Memory 2 GB DIMM 240-pin DDR2

Key differences

Internal memory
- 4 GB DDR2 SDRAM Memory Module:4 GB
- Memory 2 GB DIMM 240-pin DDR2:2 GB
Memory layout (modules x size)
- 4 GB DDR2 SDRAM Memory Module:2 x 2 GB
- Memory 2 GB DIMM 240-pin DDR2:1 x 2 GB
Buffered memory type
- 4 GB DDR2 SDRAM Memory Module:Unregistered (unbuffered)
- Memory 2 GB DIMM 240-pin DDR2:Registered (buffered)

Differences highlightedShow differences only

Comparison of 4 GB DDR2 SDRAM Memory Module, Memory 2 GB DIMM 240-pin DDR2
19 specifications	A Kingston Technology 4 GB DDR2 SDRAM Memory Module View product	B Kingston Technology Memory 2 GB DIMM 240-pin DDR2 View product
Features3 differ
Internal memoryDiffers	4 GB	2 GB
Memory layout (modules x size)Differs	2 x 2 GB	1 x 2 GB
Internal memory type	DDR2	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latencyKnown for one	6	Unknown — not stated by the source
Memory bus	72 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltageKnown for one	1.8 V	Unknown — not stated by the source
Module configurationKnown for one	256M X 72	Unknown — not stated by the source
Memory type	DDR2	DDR2
Lead platingKnown for one	Unknown — not stated by the source	Gold
Other featuresidentical
Special featuresKnown for one	Unbuffered	Unknown — not stated by the source
CompatibilityKnown for one	46C7427 (IBM); 46C7429 (IBM); 40W3167 (IBM)	Unknown — not stated by the source
Bus clock rateKnown for one	800 MHz	Unknown — not stated by the source
Error indicationKnown for one	ECC	Unknown — not stated by the source
Form factorKnown for one	240-pin DIMM	Unknown — not stated by the source
Internal memoryKnown for one	4096 MB	Unknown — not stated by the source
Memory layoutKnown for one	2 x 2048 MB	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.