Product comparison · 2 memory modules

Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2) vs Kingston Technology 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4

Key differences

Internal memory
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):4 GB
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:8 GB
Memory layout (modules x size)
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):2 x 2 GB
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:2 x 4 GB
Internal memory type
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):DDR3
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:DDR2
ECC
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):No
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:Yes
Memory bus
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):64 bit
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:72 bit
Buffered memory type
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):Unregistered (unbuffered)
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:Registered (buffered)
Module configuration
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):256M X 64
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:512M X 72
Memory type
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):DDR3
- 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4:DDR2

Differences highlightedShow differences only

Comparison of 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2), 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4
12 specifications	A Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2)View product	B Kingston Technology 8GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM (Kit of 2) Dual Rank, x4 View product
Features8 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	2 x 2 GB	2 x 4 GB
Internal memory typeDiffers	DDR3	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latency	7	7
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltageKnown for one	Unknown — not stated by the source	1.8 V
Module configurationDiffers	256M X 64	512M X 72
Memory typeDiffers	DDR3	DDR2
Lead plating	Gold	Gold

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.