Product comparison · 2 memory modules

Samsung 2GB DDR3 1066MHz Unbuffered SODIMM vs Samsung 2GB DDR3 1333MHz reg ECC

Key differences

Memory form factor
- 2GB DDR3 1066MHz Unbuffered SODIMM:204-pin SO-DIMM
- 2GB DDR3 1333MHz reg ECC:240-pin DIMM
ECC
- 2GB DDR3 1066MHz Unbuffered SODIMM:No
- 2GB DDR3 1333MHz reg ECC:Yes
CAS latency
- 2GB DDR3 1066MHz Unbuffered SODIMM:7
- 2GB DDR3 1333MHz reg ECC:9
Memory clock speed
- 2GB DDR3 1066MHz Unbuffered SODIMM:1066 MHz
- 2GB DDR3 1333MHz reg ECC:1333 MHz
Buffered memory type
- 2GB DDR3 1066MHz Unbuffered SODIMM:Unregistered (unbuffered)
- 2GB DDR3 1333MHz reg ECC:Registered (buffered)
Chips organisation
- 2GB DDR3 1066MHz Unbuffered SODIMM:256Mx64
- 2GB DDR3 1333MHz reg ECC:256M x 72

Differences highlightedShow differences only

Comparison of 2GB DDR3 1066MHz Unbuffered SODIMM, 2GB DDR3 1333MHz reg ECC
15 specifications	A Samsung 2GB DDR3 1066MHz Unbuffered SODIMM View product	B Samsung 2GB DDR3 1333MHz reg ECC View product
Features5 differ
Internal memory	2 GB	2 GB
Memory layout (modules x size)	1 x 2 GB	1 x 2 GB
Internal memory type	DDR3	DDR3
Memory form factorDiffers	204-pin SO-DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	7	9
Memory clock speedDiffers	1066 MHz	1333 MHz
Memory busKnown for one	Unknown — not stated by the source	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltage	1.5 V	1.5 V
SPD profileKnown for one	Unknown — not stated by the source	Yes
Memory typeKnown for one	Unknown — not stated by the source	DDR3
Component forKnown for one	Laptop	Unknown — not stated by the source
Other features1 differ
Chips organisationDiffers	256Mx64	256M x 72
Packaging dataidentical
Package typeKnown for one	SO-DIMM	Unknown — not stated by the source

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.