Product comparison · 2 memory modules

Lenovo 512MB DDR2 SDRAM UDIMM vs Lenovo Memory 256MB PC2100 DDR SDRAM DIMM

Key differences

Internal memory
- 512MB DDR2 SDRAM UDIMM:0.5 GB
- Memory 256MB PC2100 DDR SDRAM DIMM:0.25 GB
Internal memory type
- 512MB DDR2 SDRAM UDIMM:DDR2
- Memory 256MB PC2100 DDR SDRAM DIMM:DDR
Memory form factor
- 512MB DDR2 SDRAM UDIMM:240-pin DIMM
- Memory 256MB PC2100 DDR SDRAM DIMM:200-pin SO-DIMM
CAS latency
- 512MB DDR2 SDRAM UDIMM:3
- Memory 256MB PC2100 DDR SDRAM DIMM:2.5
Memory clock speed
- 512MB DDR2 SDRAM UDIMM:400 MHz
- Memory 256MB PC2100 DDR SDRAM DIMM:266 MHz
Width
- 512MB DDR2 SDRAM UDIMM:134 mm
- Memory 256MB PC2100 DDR SDRAM DIMM:68 mm
Depth
- 512MB DDR2 SDRAM UDIMM:30 mm
- Memory 256MB PC2100 DDR SDRAM DIMM:32 mm
Height
- 512MB DDR2 SDRAM UDIMM:4 mm
- Memory 256MB PC2100 DDR SDRAM DIMM:3.8 mm

Differences highlightedShow differences only

Comparison of 512MB DDR2 SDRAM UDIMM, Memory 256MB PC2100 DDR SDRAM DIMM
13 specifications	A Lenovo 512MB DDR2 SDRAM UDIMM View product	B Lenovo Memory 256MB PC2100 DDR SDRAM DIMM View product
Features5 differ
Internal memoryDiffers	0.5 GB	0.25 GB
Internal memory typeDiffers	DDR2	DDR
Memory form factorDiffers	240-pin DIMM	200-pin SO-DIMM
ECCKnown for one	Yes	Unknown — not stated by the source
CAS latencyDiffers	3	2.5
Memory clock speedDiffers	400 MHz	266 MHz
Lead plating	Gold	Gold
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 65 °C	Unknown — not stated by the source
Weight & dimensions3 differ
WidthDiffers	134 mm	68 mm
DepthDiffers	30 mm	32 mm
HeightDiffers	4 mm	3.8 mm
WeightKnown for one	Unknown — not stated by the source	15 g
Other featuresidentical
Data transfer rateKnown for one	3200 Mbit/s	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.