Product comparison · 2 laptops

Lenovo E420s + 78Y9363 vs Lenovo T420 + 45N6678

123specifications compared
29differ
94identical
15known for one product only

Key differences

Display resolution
- E420s + 78Y9363:1366 x 768 pixels
- T420 + 45N6678:1600 x 900 pixels
Display brightness
- E420s + 78Y9363:200 cd/m²
- T420 + 45N6678:250 cd/m²
Processor family
- E420s + 78Y9363:Intel® Core™ i5
- T420 + 45N6678:Intel® Core™ i7
Processor generation
- E420s + 78Y9363:2nd gen Intel® Core™ i5
- T420 + 45N6678:2nd gen Intel® Core™ i7
Processor model
- E420s + 78Y9363:i5-2410M
- T420 + 45N6678:i7-2620M
Processor boost frequency
- E420s + 78Y9363:2.9 GHz
- T420 + 45N6678:3.4 GHz
Processor frequency
- E420s + 78Y9363:2.3 GHz
- T420 + 45N6678:2.7 GHz
Processor cache
- E420s + 78Y9363:3 MB
- T420 + 45N6678:4 MB

Side by side

Differences highlightedShow differences only

Comparison of E420s + 78Y9363, T420 + 45N6678
138 specifications	A Lenovo E420s + 78Y9363 View product	B Lenovo T420 + 45N6678 View product
Display2 differ
Display resolutionDiffers	1366 x 768 pixels	1600 x 900 pixels
HD typeKnown for one	Unknown — not stated by the source	HD+
Display brightnessDiffers	200 cd/m²	250 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	300:1
Processor9 differ
Processor familyDiffers	Intel® Core™ i5	Intel® Core™ i7
Processor generationDiffers	2nd gen Intel® Core™ i5	2nd gen Intel® Core™ i7
Processor modelDiffers	i5-2410M	i7-2620M
Processor boost frequencyDiffers	2.9 GHz	3.4 GHz
Processor frequencyDiffers	2.3 GHz	2.7 GHz
Processor cacheDiffers	3 MB	4 MB
Processor seriesDiffers	Intel Core i5-2400 Mobile Series	Intel Core i7-2600 Mobile Series
PCI Express configurationsDiffers	1x8, 1x16, 2x4, 2x8	1x16, 2x8, 1x8+2x4
CPU multiplier (bus/core ratio)Differs	23	27
Storageidentical
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	7200 RPM
SSD capacityKnown for one	128 GB	Unknown — not stated by the source
Graphics1 differ
On-board graphics card dynamic frequency (max)Differs	1200 MHz	1300 MHz
Audioidentical
Speaker powerKnown for one	Unknown — not stated by the source	1 W
Network1 differ
BluetoothDiffers	Yes	No
Bluetooth versionKnown for one	3.0+HS	Unknown — not stated by the source
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers	2	3
DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
Docking connectorDiffers	No	Yes
ExpressCard slotDiffers	No	Yes
HDMI ports quantityKnown for one	1	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® QM67 Express
Processor special features6 differ
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Insider™Differs	No	Yes
Processor ARK IDDiffers	52224	52231
Processor codeKnown for one	Unknown — not stated by the source	SR041
Processor package sizeDiffers	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)
Intel® Smart CacheKnown for one	Yes	Unknown — not stated by the source
Battery2 differ
Number of battery cellsDiffers	4	6
Battery life (max)Differs	7 h	9 h
Weight & dimensions5 differ
WeightDiffers	1.88 kg	2.2 kg
WidthDiffers	349 mm	340.5 mm
DepthDiffers	236 mm	233 mm
Height (front)Differs	2.31 cm	3.01 cm
Height (rear)Differs	3.12 cm	3.05 cm
Other featuresidentical
Supplied AC adapter typeKnown for one	AC	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.

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