Product comparison · 2 memory modules

Kingston Technology 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2) vs Kingston Technology 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4

Key differences

Internal memory
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):4 GB
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:8 GB
Memory layout (modules x size)
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):2 x 2 GB
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 8 GB
Memory form factor
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):200-pin SO-DIMM
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:240-pin DIMM
ECC
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):No
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:Yes
CAS latency
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):6
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:5
Memory bus
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):64 bit
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:72 bit
Buffered memory type
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):Unregistered (unbuffered)
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:Registered (buffered)
Module configuration
- 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2):256M X 64
- 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1024M X 72

Differences highlightedShow differences only

Comparison of 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2), 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4
20 specifications	A Kingston Technology 4GB 800MHz DDR2 Non-ECC CL6 SODIMM (Kit of 2)View product	B Kingston Technology 8GB 667MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 View product
Features8 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	2 x 2 GB	1 x 8 GB
Memory form factorDiffers	200-pin SO-DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	6	5
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory rankingKnown for one	Unknown — not stated by the source	2
Module configurationDiffers	256M X 64	1024M X 72
Lead platingKnown for one	Unknown — not stated by the source	Gold
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	133.3 mm
Other features5 differ
Chips organisationKnown for one	Unknown — not stated by the source	X4
Bus clock rateDiffers	800 MHz	667 MHz
Error indicationDiffers	No	ECC
Form factorDiffers	200-pin SODIMM	240-pin DIMM
Internal memoryDiffers	4096 MB	8192 MB
Memory layoutDiffers	2 x 2048 MB	1 x 8192 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.