Product comparison · 2 laptops

Lenovo ThinkPad T420s vs Lenovo ThinkPad W520

Key differences

Display diagonal
- ThinkPad T420s:35.6 cm (14")
- ThinkPad W520:39.6 cm (15.6")
Display resolution
- ThinkPad T420s:1600 x 900 pixels
- ThinkPad W520:1920 x 1080 pixels
Processor cache
- ThinkPad T420s:3 MB
- ThinkPad W520:8 MB
HDD capacity
- ThinkPad T420s:320 GB
- ThinkPad W520:500 GB
Maximum resolution
- ThinkPad T420s:1600 x 900 pixels
- ThinkPad W520:1920 x 1080 pixels
AC adapter power
- ThinkPad T420s:65 W
- ThinkPad W520:170 W
Weight
- ThinkPad T420s:1.84 kg
- ThinkPad W520:3.11 kg
Depth
- ThinkPad T420s:337 mm
- ThinkPad W520:245.1 mm

Differences highlightedShow differences only

Comparison of ThinkPad T420s, ThinkPad W520
24 specifications	A Lenovo ThinkPad T420s View product	B Lenovo ThinkPad W520 View product
Display2 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolutionDiffers	1600 x 900 pixels	1920 x 1080 pixels
HD typeKnown for one	HD+	Unknown — not stated by the source
Processor1 differ
Processor cacheDiffers	3 MB	8 MB
Processor front side bus	1333 MHz	1333 MHz
Memoryidentical
Memory clock speed	1333 MHz	1333 MHz
Storage1 differ
HDD capacityDiffers	320 GB	500 GB
HDD interface	SATA	SATA
Graphics1 differ
Maximum resolutionDiffers	1600 x 900 pixels	1920 x 1080 pixels
Graphics card familyKnown for one	Unknown — not stated by the source	NVIDIA
Maximum graphics card memoryKnown for one	Unknown — not stated by the source	0.002 GB
Audioidentical
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Speaker power	1 W	1 W
Batteryidentical
Battery voltageKnown for one	11.1 V	Unknown — not stated by the source
Power1 differ
AC adapter powerDiffers	65 W	170 W
Weight & dimensions3 differ
WeightDiffers	1.84 kg	3.11 kg
DepthDiffers	337 mm	245.1 mm
HeightDiffers	21.2 mm	35.6 mm
Other featuresidentical
Infrared data port	No	No
Indication lightKnown for one	Yes	Unknown — not stated by the source
Plug and PlayKnown for one	Yes	Unknown — not stated by the source
Supplied AC adapter typeKnown for one	AC	Unknown — not stated by the source
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Ports & interfacesidentical
Docking connectorKnown for one	Unknown — not stated by the source	Yes

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.