Product comparison · 2 memory modules

Kingston Technology 4GB DDR2 667 MHz vs Lenovo 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory

7specifications compared
5differ
2identical
19known for one product only

Key differences

Internal memory
- 4GB DDR2 667 MHz:4 GB
- 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory:0.25 GB
Memory form factor
- 4GB DDR2 667 MHz:200-pin SO-DIMM
- 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory:240-pin DIMM
ECC
- 4GB DDR2 667 MHz:No
- 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory:Yes
CAS latency
- 4GB DDR2 667 MHz:5
- 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory:6
Width
- 4GB DDR2 667 MHz:67.6 mm
- 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory:134 mm

Side by side

Differences highlightedShow differences only

Comparison of 4GB DDR2 667 MHz, 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory
26 specifications	A Kingston Technology 4GB DDR2 667 MHz View product	B Lenovo 256MB PC2-6400 Non-Parity DDR2 SDRAM UDIMM Memory View product
Features4 differ
Internal memoryDiffers	4 GB	0.25 GB
Memory layout (modules x size)Known for one	2 x 2 GB	Unknown — not stated by the source
Internal memory type	DDR2	DDR2
Component forKnown for one	Laptop	Unknown — not stated by the source
Memory form factorDiffers	200-pin SO-DIMM	240-pin DIMM
ECCDiffers	No	Yes
CAS latencyDiffers	5	6
Memory busKnown for one	64 bit	Unknown — not stated by the source
Buffered memory typeKnown for one	Unregistered (unbuffered)	Unknown — not stated by the source
Memory voltageKnown for one	1.8 V	Unknown — not stated by the source
Module configurationKnown for one	256M X 64	Unknown — not stated by the source
Memory typeKnown for one	DDR2	Unknown — not stated by the source
Product colourKnown for one	Multicolour	Unknown — not stated by the source
Lead plating	Gold	Gold
Memory clock speedKnown for one	Unknown — not stated by the source	800 MHz
Weight & dimensions1 differ
WidthDiffers	67.6 mm	134 mm
DepthKnown for one	Unknown — not stated by the source	30 mm
HeightKnown for one	Unknown — not stated by the source	4 mm
Other featuresidentical
CompatibilityKnown for one	MA940G/A (Apple); MA940G/B (Apple)	Unknown — not stated by the source
Bus clock rateKnown for one	667 MHz	Unknown — not stated by the source
Error indicationKnown for one	No	Unknown — not stated by the source
Form factorKnown for one	200-pin SODIMM	Unknown — not stated by the source
Internal memoryKnown for one	4096 MB	Unknown — not stated by the source
Mac compatibilityKnown for one	Yes	Unknown — not stated by the source
Memory layoutKnown for one	2 x 2048 MB	Unknown — not stated by the source
Number of pinsKnown for one	Unknown — not stated by the source	240

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.

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