Product comparison · 2 laptops

Lenovo L520 + 45N6681 vs Lenovo X220 + ThinkPad Mini Dock Series 3

126specifications compared
28differ
98identical
32known for one product only

Key differences

Display diagonal
- L520 + 45N6681:39.6 cm (15.6")
- X220 + ThinkPad Mini Dock Series 3:31.8 cm (12.5")
Processor family
- L520 + 45N6681:Intel® Core™ i5
- X220 + ThinkPad Mini Dock Series 3:Intel® Core™ i3
Processor generation
- L520 + 45N6681:2nd gen Intel® Core™ i5
- X220 + ThinkPad Mini Dock Series 3:2nd gen Intel® Core™ i3
Processor model
- L520 + 45N6681:i5-2410M
- X220 + ThinkPad Mini Dock Series 3:i3-2350M
Processor socket
- L520 + 45N6681:BGA 1023
- X220 + ThinkPad Mini Dock Series 3:Socket 988
Tjunction
- L520 + 45N6681:100 °C
- X220 + ThinkPad Mini Dock Series 3:85 °C
PCI Express configurations
- L520 + 45N6681:1x8, 1x16, 2x4, 2x8
- X220 + ThinkPad Mini Dock Series 3:1x16, 2x8, 1x8+2x4
Optical drive type
- L520 + 45N6681:DVD±RW
- X220 + ThinkPad Mini Dock Series 3:No

Side by side

Differences highlightedShow differences only

Comparison of L520 + 45N6681, X220 + ThinkPad Mini Dock Series 3
158 specifications	A Lenovo L520 + 45N6681 View product	B Lenovo X220 + ThinkPad Mini Dock Series 3 View product
Designidentical
Product colourKnown for one	Unknown — not stated by the source	Black
Form factorKnown for one	Unknown — not stated by the source	Clamshell
Display1 differ
Display diagonalDiffers	39.6 cm (15.6")	31.8 cm (12.5")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display brightnessKnown for one	220 cd/m²	Unknown — not stated by the source
Contrast ratio (typical)Known for one	500:1	Unknown — not stated by the source
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	i5-2410M	i3-2350M
Processor cores	2	2
Processor threads	4	4
Processor frequency	2.3 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 socketDiffers	BGA 1023	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 configurationsDiffers	1x8, 1x16, 2x4, 2x8	1x16, 2x8, 1x8+2x4
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)	23	23
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
Memory slots (available)Known for one	Unknown — not stated by the source	1
Maximum internal memory	8 GB	8 GB
Storage2 differ
Total storage capacity	320 GB	320 GB
Storage media	HDD	HDD
Number of HDDs installed	1	1
HDD capacityKnown for one	Unknown — not stated by the source	320 GB
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Optical drive typeDiffers	DVD±RW	No
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	MMC, SD, SDHC, SDXC	SD
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
Discrete graphics cardKnown for one	No	Unknown — not stated by the source
Discrete graphics card modelKnown for one	Not available	Unknown — not stated by the source
Audio2 differ
Audio systemDiffers	High Definition Audio	HDA
Number of built-in speakers	2	2
Speaker powerDiffers	1.5 W	2 W
Built-in microphone	Yes	Yes
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	No
Network1 differ
Wi-Fi	Yes	Yes
Wireless technologyKnown for one	Unknown — not stated by the source	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
BluetoothDiffers	Yes	No
Integrated 4G WiMAX	Yes	Yes
Bluetooth versionKnown for one	3.0+HS	Unknown — not stated by the source
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
Ports & interfaces3 differ
USB 2.0 ports quantity	3	3
eSATA/USB 2.0 ports quantityDiffers	1	0
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	Unknown — not stated by the source	0
eSATA ports quantityKnown for one	Unknown — not stated by the source	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantityKnown for one	Unknown — not stated by the source	0
DisplayPorts quantity	1	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) portsKnown for one	Unknown — not stated by the source	0
Thunderbolt ports quantityKnown for one	Unknown — not stated by the source	0
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connectorDiffers	Yes	No
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slotDiffers	Yes	No
TV-out	No	No
Keyboard1 differ
Pointing deviceDiffers	ThinkPad UltraNav	Trackpad
Numeric keypad	No	No
Windows keysKnown for one	Unknown — not stated by the source	Yes
Keyboard layoutKnown for one	QWERTY	Unknown — not stated by the source
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	53438
Processor codeKnown for one	Unknown — not stated by the source	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 life (max)Known for one	6.6 h	Unknown — not stated by the source
Poweridentical
AC adapter powerKnown for one	Unknown — not stated by the source	90 W
AC adapter frequencyKnown for one	Unknown — not stated by the source	50 - 60 Hz
AC adapter input voltageKnown for one	Unknown — not stated by the source	100 - 240 V
DC-in jack	Yes	Yes
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	IBM	Kensington
Fingerprint reader	Yes	Yes
Certificatesidentical
Wi-Fi certifiedKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions5 differ
WeightDiffers	2.61 kg	1.3 kg
WidthDiffers	380 mm	305 mm
DepthDiffers	247 mm	206.5 mm
Height (front)Differs	3.2 cm	1.9 cm
Height (rear)Differs	3.6 cm	3.46 cm
Packaging contentidentical
AC adapter includedKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
Infrared data port	No	No
Power supply typeKnown for one	Unknown — not stated by the source	AC/DC
Supplied AC adapter typeKnown for one	Unknown — not stated by the source	AC
Intel segment taggingKnown for one	Home office, Small Business	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Intel® HM65 Express	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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