Product comparison · 2 memory modules

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

Key differences

Internal memory
- 2GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Single Rank, x4:2 GB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Single Rank, x4:4 GB
Memory layout (modules x size)
- 2GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Single Rank, x4:1 x 2 GB
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Single Rank, x4:2 x 2 GB
ECC
- 2GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Single Rank, x4:No
- 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Single Rank, x4:Yes

Differences highlightedShow differences only

Comparison of 2GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Single Rank, x4, 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Single Rank, x4
15 specifications	A Kingston Technology 2GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Single Rank, x4 View product	B Kingston Technology 4GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Single Rank, x4 View product
Features3 differ
Internal memoryDiffers	2 GB	4 GB
Memory layout (modules x size)Differs	1 x 2 GB	2 x 2 GB
Internal memory type	DDR2	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latency	5	5
Memory bus	72 bit	72 bit
Buffered memory type	Registered (buffered)	Registered (buffered)
Memory voltage	1.8 V	1.8 V
Module configuration	256M X 72	256M X 72
Memory type	DDR2	DDR2
Lead plating	Gold	Gold
Other featuresidentical
Chips organisationKnown for one	X4	Unknown — not stated by the source
Bus clock rate	667 MHz	667 MHz
Form factor	240-pin DIMM	240-pin DIMM

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.