Product comparison · 2 laptops

Lenovo E420s + mouse + case vs Lenovo E520 + mouse + case

129specifications compared
30differ
99identical
9known for one product only

Key differences

Display diagonal
- E420s + mouse + case:35.6 cm (14")
- E520 + mouse + case:39.6 cm (15.6")
Display brightness
- E420s + mouse + case:200 cd/m²
- E520 + mouse + case:220 cd/m²
Contrast ratio (typical)
- E420s + mouse + case:300:1
- E520 + mouse + case:500:1
Processor family
- E420s + mouse + case:Intel® Core™ i5
- E520 + mouse + case:Intel® Core™ i3
Processor generation
- E420s + mouse + case:2nd gen Intel® Core™ i5
- E520 + mouse + case:2nd gen Intel® Core™ i3
Processor model
- E420s + mouse + case:i5-2410M
- E520 + mouse + case:i3-2330M
Processor frequency
- E420s + mouse + case:2.3 GHz
- E520 + mouse + case:2.2 GHz
Processor cache type
- E420s + mouse + case:Smart Cache
- E520 + mouse + case:L3

Side by side

Differences highlightedShow differences only

Comparison of E420s + mouse + case, E520 + mouse + case
138 specifications	A Lenovo E420s + mouse + case View product	B Lenovo E520 + mouse + case View product
Designidentical
Product colourKnown for one	Unknown — not stated by the source	Black
Display3 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display brightnessDiffers	200 cd/m²	220 cd/m²
Contrast ratio (typical)Differs	300:1	500:1
Processor9 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i5	Intel® Core™ i3
Processor generationDiffers	2nd gen Intel® Core™ i5	2nd gen Intel® Core™ i3
Processor modelDiffers	i5-2410M	i3-2330M
Processor cores	2	2
Processor threads	4	4
Processor frequencyDiffers	2.3 GHz	2.2 GHz
System bus rate	5 GT/s	5 GT/s
Processor cache	3 MB	3 MB
Processor cache typeDiffers	Smart Cache	L3
Processor socket	BGA 1023	BGA 1023
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i5-2400 Mobile Series	Intel Core i3-2300 Mobile Series
Processor codename	Sandy Bridge	Sandy Bridge
Bus type	DMI	DMI
FSB Parity	No	No
Stepping	J1	J1
Thermal Design Power (TDP)	35 W	35 W
TjunctionDiffers	100 °C	85C ; 100C
Maximum number of PCI Express lanes	16	16
PCI Express configurationsDiffers	1x8, 1x16, 2x4, 2x8	1x16, 2x8
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Differs	23	22
ECC supported by processor	No	No
Processor boost frequencyKnown for one	2.9 GHz	Unknown — not stated by the source
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory clock speed	1333 MHz	1333 MHz
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memory	8 GB	8 GB
Storage1 differ
Total storage capacityDiffers	320 GB	500 GB
Storage media	HDD	HDD
Number of HDDs installedKnown for one	Unknown — not stated by the source	1
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Optical drive type	DVD±RW	DVD±RW
Card reader integrated	Yes	Yes
Compatible memory cards	MMC, SD, SDHC, SDXC	MMC, SD, SDHC, SDXC
Graphics4 differ
On-board graphics card	Yes	Yes
Discrete graphics cardDiffers	Yes	No
Discrete graphics card modelDiffers	AMD Radeon HD 6630M	Not available
Graphics card familyDiffers	AMD	Intel
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 3000	Intel® HD Graphics 3000
On-board graphics card base frequency	650 MHz	650 MHz
On-board graphics card dynamic frequency (max)Differs	1200 MHz	1100 MHz
On-board graphics card ID	0x116	0x116
Audioidentical
Audio system	High Definition Audio	High Definition Audio
Number of built-in speakers	2	2
Speaker power	1 W	1 W
Built-in microphone	Yes	Yes
Networkidentical
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Wi-Fi standardsKnown for one	Unknown — not stated by the source	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	Yes	Yes
Bluetooth	Yes	Yes
Bluetooth version	3.0+HS	3.0+HS
Integrated 4G WiMAX	Yes	Yes
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers	2	3
eSATA/USB 2.0 ports quantity	1	1
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	1	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connector	No	No
ExpressCard slotDiffers	No	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	Yes	Yes
TV-out	No	No
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® HM65 Express
Keyboardidentical
Pointing device	ThinkPad UltraNav	ThinkPad UltraNav
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Processor special features4 differ
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithography	32 nm	32 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Identity Protection Technology version	1.00	1.00
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	No	No
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Anti-Theft Technology (Intel® AT)	Yes	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)	Yes	Yes
Intel® InTru™ 3D Technology	Yes	Yes
Intel® Insider™Differs	No	Yes
Intel® My WiFi Technology (Intel® MWT)	Yes	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	2.0	No
Processor ARK IDDiffers	52224	53434
Processor codeKnown for one	Unknown — not stated by the source	SR04J
Processor package sizeDiffers	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Battery2 differ
Number of battery cellsDiffers	4	6
Battery life (max)Differs	7 h	6.2 h
Poweridentical
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	Yes	Yes
Cable lock slot type	IBM	IBM
Fingerprint readerKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions5 differ
WeightDiffers	1.88 kg	2.5 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
Other featuresidentical
Infrared data port	No	No
Intel segment tagging	Home office, Small Business	Home office, Small Business
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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