Product comparison · 2 memory modules

Kingston Technology 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 vs Kingston Technology 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8

Key differences

Memory layout (modules x size)
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 8 GB
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8:2 x 4 GB
Memory ranking
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:2
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8:4
Module configuration
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1024M X 72
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8:512M X 72
Chips organisation
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:X4
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8:X8
Memory layout
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 8192 MB
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8:2 x 4096 MB

Differences highlightedShow differences only

Comparison of 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4, 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8
20 specifications	A Kingston Technology 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 View product	B Kingston Technology 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Quad Rank, x8 View product
Features3 differ
Internal memory	8 GB	8 GB
Memory layout (modules x size)Differs	1 x 8 GB	2 x 4 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 type	Registered (buffered)	Registered (buffered)
Memory rankingDiffers	2	4
Memory voltage	1.8 V	1.8 V
Module configurationDiffers	1024M X 72	512M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Weight & dimensionsidentical
WidthKnown for one	133.3 mm	Unknown — not stated by the source
Other features2 differ
Chips organisationDiffers	X4	X8
Bus clock rate	667 MHz	667 MHz
Error indication	ECC	ECC
Form factor	240-pin DIMM	240-pin DIMM
Internal memory	8192 MB	8192 MB
Memory layoutDiffers	1 x 8192 MB	2 x 4096 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.