Product comparison · 2 laptops

Lenovo ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0 vs Lenovo W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK)

Key differences

Display diagonal
- ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0:35.6 cm (14")
- W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK):39.6 cm (15.6")
Processor cache
- ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0:3 MB
- W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK):4 MB
AC adapter power
- ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0:65 W
- W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK):170 W
Weight
- ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0:1.81 kg
- W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK):3.11 kg
Depth
- ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0:337 mm
- W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK):245.1 mm
Height
- ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0:21.2 mm
- W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK):35.6 mm

Differences highlightedShow differences only

Comparison of ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0, W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK)
22 specifications	A Lenovo ThinkPad T420 i5-2520 processor 320GB/7200rpm4GB MemoryIntel HD Graphics 300014.0 View product	B Lenovo W520 Intel 2.6GHZ/3MB 4GB Memoryi 7 processorWin 7 64 bit OS: ENGLISH (US) KB: ENGLISH (UK)View product
Display1 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolution	1600 x 900 pixels	1600 x 900 pixels
HD type	HD+	HD+
Processor1 differ
Processor cacheDiffers	3 MB	4 MB
Processor front side bus	1333 MHz	1333 MHz
Memoryidentical
Memory clock speed	1333 MHz	1333 MHz
Storageidentical
HDD capacity	320 GB	320 GB
HDD interface	SATA	SATA
Graphicsidentical
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
Maximum resolution	1600 x 900 pixels	1600 x 900 pixels
Audioidentical
Number of built-in speakers	2	2
Speaker power	1 W	1 W
Batteryidentical
Battery voltage	10.8 V	10.8 V
Power1 differ
AC adapter powerDiffers	65 W	170 W
Weight & dimensions3 differ
WeightDiffers	1.81 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 light	Yes	Yes
Plug and Play	Yes	Yes
Supplied AC adapter type	AC	AC

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.