Product comparison · 2 memory modules

Lenovo 256MB SDRAM SODIMM UPG vs Lenovo 512MB NP SDRAM DIMM UPG

Key differences

Internal memory
- 256MB SDRAM SODIMM UPG:0.25 GB
- 512MB NP SDRAM DIMM UPG:0.5 GB
Memory form factor
- 256MB SDRAM SODIMM UPG:144-pin SO-DIMM
- 512MB NP SDRAM DIMM UPG:168-pin DIMM
Memory clock speed
- 256MB SDRAM SODIMM UPG:100 MHz
- 512MB NP SDRAM DIMM UPG:133 MHz
Operating relative humidity (H-H)
- 256MB SDRAM SODIMM UPG:10 - 80%
- 512MB NP SDRAM DIMM UPG:8 - 80%
Width
- 256MB SDRAM SODIMM UPG:67.6 mm
- 512MB NP SDRAM DIMM UPG:133.4 mm
Depth
- 256MB SDRAM SODIMM UPG:25.4 mm
- 512MB NP SDRAM DIMM UPG:35.7 mm
Height
- 256MB SDRAM SODIMM UPG:4 mm
- 512MB NP SDRAM DIMM UPG:3.8 mm

Differences highlightedShow differences only

Comparison of 256MB SDRAM SODIMM UPG, 512MB NP SDRAM DIMM UPG
13 specifications	A Lenovo 256MB SDRAM SODIMM UPG View product	B Lenovo 512MB NP SDRAM DIMM UPG View product
Features3 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Memory form factorDiffers	144-pin SO-DIMM	168-pin DIMM
ECC	Yes	Yes
CAS latencyKnown for one	Unknown — not stated by the source	3
Memory clock speedDiffers	100 MHz	133 MHz
Lead plating	Gold	Gold
Operational conditions1 differ
Operating temperature (T-T)	10 - 35 °C	10 - 35 °C
Operating relative humidity (H-H)Differs	10 - 80%	8 - 80%
Weight & dimensions3 differ
WidthDiffers	67.6 mm	133.4 mm
DepthDiffers	25.4 mm	35.7 mm
HeightDiffers	4 mm	3.8 mm
WeightKnown for one	Unknown — not stated by the source	45 g
Other featuresidentical
Special features	Authenticity Seal, Tamper evident carton seal	Authenticity Seal, Tamper evident carton seal

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.