Product comparison · 2 laptops

Lenovo E420s + 78Y9363 vs Lenovo E520 + 78Y9363

122specifications compared
24differ
98identical
12known for one product only

Key differences

Display diagonal
- E420s + 78Y9363:35.6 cm (14")
- E520 + 78Y9363:39.6 cm (15.6")
Display brightness
- E420s + 78Y9363:200 cd/m²
- E520 + 78Y9363:220 cd/m²
Processor family
- E420s + 78Y9363:Intel® Core™ i5
- E520 + 78Y9363:Intel® Core™ i3
Processor generation
- E420s + 78Y9363:2nd gen Intel® Core™ i5
- E520 + 78Y9363:2nd gen Intel® Core™ i3
Processor model
- E420s + 78Y9363:i5-2410M
- E520 + 78Y9363:i3-2310M
Processor frequency
- E420s + 78Y9363:2.3 GHz
- E520 + 78Y9363:2.1 GHz
PCI Express configurations
- E420s + 78Y9363:1x8, 1x16, 2x4, 2x8
- E520 + 78Y9363:1x16, 2x8, 1x8+2x4
CPU multiplier (bus/core ratio)
- E420s + 78Y9363:23
- E520 + 78Y9363:21

Side by side

Differences highlightedShow differences only

Comparison of E420s + 78Y9363, E520 + 78Y9363
134 specifications	A Lenovo E420s + 78Y9363 View product	B Lenovo E520 + 78Y9363 View product
Display2 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display brightnessDiffers	200 cd/m²	220 cd/m²
Processor7 differ
Processor familyDiffers	Intel® Core™ i5	Intel® Core™ i3
Processor generationDiffers	2nd gen Intel® Core™ i5	2nd gen Intel® Core™ i3
Processor modelDiffers	i5-2410M	i3-2310M
Processor boost frequencyKnown for one	2.9 GHz	Unknown — not stated by the source
Processor frequencyDiffers	2.3 GHz	2.1 GHz
Processor seriesDiffers	Intel Core i5-2400 Mobile Series	Intel Core i3-2300 Mobile Series
PCI Express configurationsDiffers	1x8, 1x16, 2x4, 2x8	1x16, 2x8, 1x8+2x4
CPU multiplier (bus/core ratio)Differs	23	21
Storageidentical
SSD capacityKnown for one	128 GB	Unknown — not stated by the source
Total storage capacityKnown for one	Unknown — not stated by the source	500 GB
HDD interfaceKnown for one	Unknown — not stated by the source	SATA
HDD speedKnown for one	Unknown — not stated by the source	5400 RPM
Graphics2 differ
Discrete graphics card modelDiffers	Intel® HD Graphics 3000	Intel® HD Graphics
On-board graphics card dynamic frequency (max)Differs	1200 MHz	1100 MHz
Audioidentical
Speaker powerKnown for one	Unknown — not stated by the source	1 W
Networkidentical
Mobile network connectionKnown for one	Yes	Unknown — not stated by the source
Mobile network generationKnown for one	3G	Unknown — not stated by the source
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers	2	3
ExpressCard slotDiffers	No	Yes
Processor special features4 differ
Intel® Insider™Differs	No	Yes
Intel® Smart CacheKnown for one	Yes	Unknown — not stated by the source
Intel® Turbo Boost TechnologyDiffers	2.0	No
Processor ARK IDDiffers	52224	52220
Processor package sizeDiffers	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)	37.5 x 37.5 xrPGA988B); 31 x 24 (BGA1023)
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Processor codeKnown for one	Unknown — not stated by the source	SR04S
Battery2 differ
Number of battery cellsDiffers	4	6
Battery life (max)Differs	7 h	6.2 h
Securityidentical
Fingerprint readerKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions5 differ
WeightDiffers	1.88 kg	2.4 kg
WidthDiffers	349 mm	380 mm
DepthDiffers	236 mm	248.5 mm
Height (front)Differs	2.31 cm	2.93 cm
Height (rear)Differs	3.12 cm	3.37 cm

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.

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