Product comparison · 2 memory modules

Kingston Technology 1GB, 1066MHz, DDR3, ECC w/ thermal sensor vs Kingston Technology 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8

Key differences

Internal memory
- 1GB, 1066MHz, DDR3, ECC w/ thermal sensor:1 GB
- 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8:4 GB
Memory layout (modules x size)
- 1GB, 1066MHz, DDR3, ECC w/ thermal sensor:1 x 1 GB
- 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8:4 x 1 GB
Internal memory type
- 1GB, 1066MHz, DDR3, ECC w/ thermal sensor:DDR3
- 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8:DDR2
Buffered memory type
- 1GB, 1066MHz, DDR3, ECC w/ thermal sensor:Unregistered (unbuffered)
- 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8:Registered (buffered)
Memory type
- 1GB, 1066MHz, DDR3, ECC w/ thermal sensor:DDR3
- 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8:DDR2

Differences highlightedShow differences only

Comparison of 1GB, 1066MHz, DDR3, ECC w/ thermal sensor, 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8
19 specifications	A Kingston Technology 1GB, 1066MHz, DDR3, ECC w/ thermal sensor View product	B Kingston Technology 4GB, 667MHz, DDR2, ECC Fully Buffered, CL5 DIMM (Kit of 4) Single Rank, x8 View product
Features5 differ
Internal memoryDiffers	1 GB	4 GB
Memory layout (modules x size)Differs	1 x 1 GB	4 x 1 GB
Internal memory typeDiffers	DDR3	DDR2
CAS latencyKnown for one	Unknown — not stated by the source	5
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory rankingKnown for one	Unknown — not stated by the source	1
Memory voltageKnown for one	Unknown — not stated by the source	1.8 V
Module configurationKnown for one	Unknown — not stated by the source	128M X 72
Memory typeDiffers	DDR3	DDR2
Other featuresidentical
Bus clock rateKnown for one	Unknown — not stated by the source	667 MHz
Error indicationKnown for one	Unknown — not stated by the source	ECC
Form factorKnown for one	Unknown — not stated by the source	240-pin DIMM
Internal memoryKnown for one	Unknown — not stated by the source	4096 MB
Memory layoutKnown for one	Unknown — not stated by the source	4 x 1024 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.