Product comparison · 2 memory modules

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

Key differences

Memory layout (modules x size)
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 4 GB
- 4GB DDR2-667 Dual Rank Kit:2 x 2 GB
Internal memory type
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:DDR2
- 4GB DDR2-667 Dual Rank Kit:DRAM
Module configuration
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:512M X 72
- 4GB DDR2-667 Dual Rank Kit:256M X 72
Error indication
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:ECC
- 4GB DDR2-667 Dual Rank Kit:Parity
Memory layout
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 4096 MB
- 4GB DDR2-667 Dual Rank Kit:2 x 2048 MB

Differences highlightedShow differences only

Comparison of 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4, 4GB DDR2-667 Dual Rank Kit
20 specifications	A Kingston Technology 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 View product	B Kingston Technology 4GB DDR2-667 Dual Rank Kit View product
Features3 differ
Internal memory	4 GB	4 GB
Memory layout (modules x size)Differs	1 x 4 GB	2 x 2 GB
Internal memory typeDiffers	DDR2	DRAM
Memory form factor	240-pin DIMM	240-pin DIMM
ECCKnown for one	Yes	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 voltage	1.8 V	1.8 V
Module configurationDiffers	512M X 72	256M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Other features2 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 memory	4096 MB	4096 MB
Memory layoutDiffers	1 x 4096 MB	2 x 2048 MB
CompatibilityKnown for one	Unknown — not stated by the source	408853-B21 (HP); EV283AA (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.