Product comparison · 2 laptops

Lenovo ThinkPad Edge E520 vs Lenovo ThinkPad T420s

Key differences

Display diagonal
- ThinkPad Edge E520:39.6 cm (15.6")
- ThinkPad T420s:35.6 cm (14")
Display resolution
- ThinkPad Edge E520:1366 x 768 pixels
- ThinkPad T420s:1600 x 900 pixels
Maximum resolution
- ThinkPad Edge E520:1366 x 768 pixels
- ThinkPad T420s:1600 x 900 pixels
Weight
- ThinkPad Edge E520:2.72 kg
- ThinkPad T420s:1.84 kg
Depth
- ThinkPad Edge E520:248.5 mm
- ThinkPad T420s:337 mm
Height
- ThinkPad Edge E520:33.7 mm
- ThinkPad T420s:21.2 mm

Differences highlightedShow differences only

Comparison of ThinkPad Edge E520, ThinkPad T420s
24 specifications	A Lenovo ThinkPad Edge E520 View product	B Lenovo ThinkPad T420s View product
Display2 differ
Display diagonalDiffers	39.6 cm (15.6")	35.6 cm (14")
Display resolutionDiffers	1366 x 768 pixels	1600 x 900 pixels
HD typeKnown for one	Unknown — not stated by the source	HD+
Processoridentical
Processor cache	3 MB	3 MB
Processor front side bus	1333 MHz	1333 MHz
Memoryidentical
Memory clock speed	1333 MHz	1333 MHz
Internal memoryKnown for one	2 GB	Unknown — not stated by the source
Memory slotsKnown for one	2x SO-DIMM	Unknown — not stated by the source
Storageidentical
HDD capacity	320 GB	320 GB
HDD interface	SATA	SATA
Graphics1 differ
Maximum resolutionDiffers	1366 x 768 pixels	1600 x 900 pixels
Graphics card familyKnown for one	Intel	Unknown — not stated by the source
Audioidentical
Number of built-in speakersKnown for one	Unknown — not stated by the source	2
Speaker power	1 W	1 W
Batteryidentical
Battery voltageKnown for one	Unknown — not stated by the source	11.1 V
Poweridentical
AC adapter power	65 W	65 W
Weight & dimensions3 differ
WeightDiffers	2.72 kg	1.84 kg
DepthDiffers	248.5 mm	337 mm
HeightDiffers	33.7 mm	21.2 mm
Other featuresidentical
Infrared data port	No	No
Indication lightKnown for one	Unknown — not stated by the source	Yes
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Supplied AC adapter typeKnown for one	Unknown — not stated by the source	AC
Softwareidentical
Operating system installedKnown for one	Windows 7 Professional	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.