Product comparison · 2 memory modules

Samsung 4GB DDR3 1333MHz ECC Unbuffered DIMM vs Samsung 8GB DDR3 1066MHz ECC Registered DIMM

Key differences

Internal memory
- 4GB DDR3 1333MHz ECC Unbuffered DIMM:4 GB
- 8GB DDR3 1066MHz ECC Registered DIMM:8 GB
Memory layout (modules x size)
- 4GB DDR3 1333MHz ECC Unbuffered DIMM:2 x 2 GB
- 8GB DDR3 1066MHz ECC Registered DIMM:4 x 2 GB
CAS latency
- 4GB DDR3 1333MHz ECC Unbuffered DIMM:9
- 8GB DDR3 1066MHz ECC Registered DIMM:7
Memory clock speed
- 4GB DDR3 1333MHz ECC Unbuffered DIMM:1333 MHz
- 8GB DDR3 1066MHz ECC Registered DIMM:1066 MHz
Buffered memory type
- 4GB DDR3 1333MHz ECC Unbuffered DIMM:Unregistered (unbuffered)
- 8GB DDR3 1066MHz ECC Registered DIMM:Registered (buffered)
Chips organisation
- 4GB DDR3 1333MHz ECC Unbuffered DIMM:512Mx72
- 8GB DDR3 1066MHz ECC Registered DIMM:1Gx72

Differences highlightedShow differences only

Comparison of 4GB DDR3 1333MHz ECC Unbuffered DIMM, 8GB DDR3 1066MHz ECC Registered DIMM
12 specifications	A Samsung 4GB DDR3 1333MHz ECC Unbuffered DIMM View product	B Samsung 8GB DDR3 1066MHz ECC Registered DIMM View product
Features5 differ
Internal memoryDiffers	4 GB	8 GB
Memory layout (modules x size)Differs	2 x 2 GB	4 x 2 GB
Internal memory type	DDR3	DDR3
Component for	PC/Server	PC/Server
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latencyDiffers	9	7
Memory clock speedDiffers	1333 MHz	1066 MHz
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltage	1.5 V	1.5 V
Packaging dataidentical
Package type	DIMM	DIMM
Other features1 differ
Chips organisationDiffers	512Mx72	1Gx72

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.