Product comparison · 2 memory modules

Kingston Technology 1GB 400MHz DDR2 Non-ECC CL3 SODIMM vs Kingston Technology 256MB 333MHz DDR Non-ECC CL2.5 SODIMM

Key differences

Internal memory
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:1 GB
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:0.25 GB
Memory layout (modules x size)
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:1 x 1 GB
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:1 x 0.25 GB
Internal memory type
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:DDR2
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:DDR
CAS latency
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:3
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:2.5
Check width
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:8 bit
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:16 bit
Memory voltage
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:1.8 V
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:2.5 V
Memory type
- 1GB 400MHz DDR2 Non-ECC CL3 SODIMM:DDR2
- 256MB 333MHz DDR Non-ECC CL2.5 SODIMM:DDR

Differences highlightedShow differences only

Comparison of 1GB 400MHz DDR2 Non-ECC CL3 SODIMM, 256MB 333MHz DDR Non-ECC CL2.5 SODIMM
19 specifications	A Kingston Technology 1GB 400MHz DDR2 Non-ECC CL3 SODIMM View product	B Kingston Technology 256MB 333MHz DDR Non-ECC CL2.5 SODIMM View product
Features7 differ
Internal memoryDiffers	1 GB	0.25 GB
Memory layout (modules x size)Differs	1 x 1 GB	1 x 0.25 GB
Internal memory typeDiffers	DDR2	DDR
Memory form factor	200-pin SO-DIMM	200-pin SO-DIMM
ECC	No	No
CAS latencyDiffers	3	2.5
Memory bus	64 bit	64 bit
Check widthDiffers	8 bit	16 bit
Buffered memory type	Unregistered (unbuffered)	Unregistered (unbuffered)
Memory voltageDiffers	1.8 V	2.5 V
Module configurationKnown for one	128M X 64	Unknown — not stated by the source
Memory typeDiffers	DDR2	DDR
Lead platingKnown for one	Gold	Unknown — not stated by the source
Other featuresidentical
Bus clock rateKnown for one	400 MHz	Unknown — not stated by the source
Form factorKnown for one	200-pin SODIMM	Unknown — not stated by the source
Mac compatibilityKnown for one	Unknown — not stated by the source	No
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	67 mm
DepthKnown for one	Unknown — not stated by the source	3 mm
HeightKnown for one	Unknown — not stated by the source	32 mm

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.