Product comparison · 2 memory modules

Kingston Technology 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4 vs Kingston Technology 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8

Key differences

Internal memory
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:16 GB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:4 GB
Memory layout (modules x size)
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:2 x 8 GB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:1 x 4 GB
Memory ranking
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:2
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:4
Module configuration
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:1024M X 72
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:512M X 72
Chips organisation
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:X4
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:X8
Internal memory
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:16384 MB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:4096 MB
Memory layout
- 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:2 x 8192 MB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8:1 x 4096 MB

Differences highlightedShow differences only

Comparison of 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4, 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8
20 specifications	A Kingston Technology 16GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4 View product	B Kingston Technology 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Quad Rank, x8 View product
Features4 differ
Internal memoryDiffers	16 GB	4 GB
Memory layout (modules x size)Differs	2 x 8 GB	1 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 features3 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 memoryDiffers	16384 MB	4096 MB
Memory layoutDiffers	2 x 8192 MB	1 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.