Product comparison · 2 memory modules

Kingston Technology 4GB DDR2-667 Fully Buffered DIMM vs Kingston Technology 8GB DDR2-667 Dual Rank Kit

Key differences

Internal memory
- 4GB DDR2-667 Fully Buffered DIMM:4 GB
- 8GB DDR2-667 Dual Rank Kit:8 GB
Memory layout (modules x size)
- 4GB DDR2-667 Fully Buffered DIMM:1 x 4 GB
- 8GB DDR2-667 Dual Rank Kit:2 x 4 GB
Error indication
- 4GB DDR2-667 Fully Buffered DIMM:ECC
- 8GB DDR2-667 Dual Rank Kit:Parity
Internal memory
- 4GB DDR2-667 Fully Buffered DIMM:4096 MB
- 8GB DDR2-667 Dual Rank Kit:8192 MB
Memory layout
- 4GB DDR2-667 Fully Buffered DIMM:1 x 4096 MB
- 8GB DDR2-667 Dual Rank Kit:2 x 4096 MB

Differences highlightedShow differences only

Comparison of 4GB DDR2-667 Fully Buffered DIMM, 8GB DDR2-667 Dual Rank Kit
19 specifications	A Kingston Technology 4GB DDR2-667 Fully Buffered DIMM View product	B Kingston Technology 8GB DDR2-667 Dual Rank Kit View product
Features2 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	1 x 4 GB	2 x 4 GB
Internal memory type	DDR2	DDR2
Memory form factorKnown for one	240-pin DIMM	Unknown — not stated by the source
CAS latency	5	5
Memory bus	72 bit	72 bit
Buffered memory type	Registered (buffered)	Registered (buffered)
Memory ranking	2	2
Memory voltageKnown for one	1.8 V	Unknown — not stated by the source
Module configuration	512M X 72	512M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Other features3 differ
Chips organisation	X4	X4
Bus clock rate	667 MHz	667 MHz
Error indicationDiffers	ECC	Parity
Form factor	240-pin DIMM	240-pin DIMM
Internal memoryDiffers	4096 MB	8192 MB
Memory layoutDiffers	1 x 4096 MB	2 x 4096 MB
CompatibilityKnown for one	Unknown — not stated by the source	408854-B21 (HP); EV284AA (HP); GY414AA (HP)

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.