Product comparison · 2 laptops

Lenovo L420 + ThinkPad Mini Dock Series 3 vs Lenovo L520 + Mini Dock

148specifications compared
21differ
127identical
15known for one product only

Key differences

Display diagonal
- L420 + ThinkPad Mini Dock Series 3:35.6 cm (14")
- L520 + Mini Dock:39.6 cm (15.6")
Processor family
- L420 + ThinkPad Mini Dock Series 3:Intel® Core™ i5
- L520 + Mini Dock:Intel® Core™ i3
Processor generation
- L420 + ThinkPad Mini Dock Series 3:2nd gen Intel® Core™ i5
- L520 + Mini Dock:2nd gen Intel® Core™ i3
Processor model
- L420 + ThinkPad Mini Dock Series 3:i5-2430M
- L520 + Mini Dock:i3-2350M
Processor frequency
- L420 + ThinkPad Mini Dock Series 3:2.4 GHz
- L520 + Mini Dock:2.3 GHz
Tjunction
- L420 + ThinkPad Mini Dock Series 3:100 °C
- L520 + Mini Dock:85 °C
CPU multiplier (bus/core ratio)
- L420 + ThinkPad Mini Dock Series 3:24
- L520 + Mini Dock:23
Optical drive type
- L420 + ThinkPad Mini Dock Series 3:DVD Super Multi DL
- L520 + Mini Dock:DVD-RW

Side by side

Differences highlightedShow differences only

Comparison of L420 + ThinkPad Mini Dock Series 3, L520 + Mini Dock
163 specifications	A Lenovo L420 + ThinkPad Mini Dock Series 3 View product	B Lenovo L520 + Mini Dock View product
Designidentical
Product colour	Black	Black
Form factor	Clamshell	Clamshell
Display1 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
Processor7 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	i5-2430M	i3-2350M
Processor cores	2	2
Processor threads	4	4
Processor frequencyDiffers	2.4 GHz	2.3 GHz
System bus rate	5 GT/s	5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socket	Socket 988	Socket 988
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	85 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16, 2x8, 1x8+2x4	1x16, 2x8, 1x8+2x4
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Differs	24	23
ECC supported by processor	No	No
Processor boost frequencyKnown for one	3 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
Memory slots (available)	1	1
Maximum internal memory	8 GB	8 GB
Storage1 differ
Total storage capacity	500 GB	500 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacity	500 GB	500 GB
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Optical drive typeDiffers	DVD Super Multi DL	DVD-RW
Card reader integratedKnown for one	Unknown — not stated by the source	Yes
Compatible memory cardsKnown for one	Unknown — not stated by the source	MMC, SD, SDHC, SDXC
Graphics1 differ
On-board graphics card	Yes	Yes
Graphics card family	Intel	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	1150 MHz
On-board graphics card ID	0x116	0x116
Audioidentical
Audio system	HDA	HDA
Number of built-in speakers	2	2
Speaker powerKnown for one	Unknown — not stated by the source	1.5 W
Built-in microphone	Yes	Yes
Networkidentical
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Wireless technology	Wi-Fi	Wi-Fi
Wi-Fi standards	802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Bluetooth	No	No
Integrated 4G WiMAX	Yes	Yes
Ports & interfacesidentical
USB 2.0 ports quantity	3	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
eSATA/USB 2.0 ports quantity	1	1
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantity	0	0
eSATA ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	0	0
DisplayPorts quantity	1	1
DVI port	No	No
Firewire (IEEE 1394) ports	0	0
Thunderbolt ports quantity	0	0
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connector	No	No
ExpressCard slotKnown for one	Unknown — not stated by the source	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slotKnown for one	Unknown — not stated by the source	No
TV-out	No	No
VGA (D-Sub) ports quantityKnown for one	1	Unknown — not stated by the source
Performanceidentical
Motherboard chipset	Intel® HM65 Express	Intel® HM65 Express
Keyboard1 differ
Pointing deviceDiffers	Trackpad	ThinkPad UltraNav
Numeric keypad	No	No
Spill-resistant keyboardKnown for one	Unknown — not stated by the source	Yes
Full-size keyboardKnown for one	Unknown — not stated by the source	Yes
Keyboard number of keysKnown for one	Unknown — not stated by the source	80
Windows keys	Yes	Yes
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Processor special features5 differ
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
CPU configuration (max)	1	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)Differs	Yes	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™	Yes	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	53450	53438
Processor codeDiffers	SR04W	SR0DN
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
Batteryidentical
Battery technology	Lithium-Ion (Li-Ion)	Lithium-Ion (Li-Ion)
Number of battery cells	6	6
Battery capacityKnown for one	Unknown — not stated by the source	2600 mAh
Poweridentical
AC adapter power	65 W	65 W
AC adapter frequency	50 - 60 Hz	50 - 60 Hz
AC adapter input voltage	100 - 240 V	100 - 240 V
DC-in jack	Yes	Yes
Securityidentical
Cable lock slot	Yes	Yes
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Password protection typeKnown for one	Unknown — not stated by the source	HDD, Power on, Supervisor, User
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Certificatesidentical
Wi-Fi certified	Yes	Yes
Weight & dimensions5 differ
WeightDiffers	2.3 kg	2.6 kg
WidthDiffers	343.9 mm	380 mm
DepthDiffers	232.9 mm	247 mm
Height (front)	3.2 cm	3.2 cm
Height (rear)	3.6 cm	3.6 cm
Width (imperial)Differs	34.4 cm (13.5")	38 cm (15")
Depth (imperial)Differs	23.3 cm (9.17")	24.7 cm (9.72")
Height (front) (imperial)	3.2 cm (1.26")	3.2 cm (1.26")
Height (rear) (imperial)	3.61 cm (1.42")	3.61 cm (1.42")
Packaging contentidentical
AC adapter included	Yes	Yes
Other featuresidentical
Infrared data port	No	No
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Power supply type	AC/DC	AC/DC
Intel segment tagging	Home office, Small Business	Home office, Small Business
Supplied AC adapter type	AC	AC
Sustainabilityidentical
Sustainability certificatesKnown for one	ENERGY STAR	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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