Product comparison · 2 laptops

Lenovo T420 + Mini Dock vs Lenovo T520 + ThinkPad Mini Dock Series 3

123specifications compared
19differ
104identical
33known for one product only

Key differences

Display diagonal
- T420 + Mini Dock:35.6 cm (14")
- T520 + ThinkPad Mini Dock Series 3:39.6 cm (15.6")
Total storage capacity
- T420 + Mini Dock:500 GB
- T520 + ThinkPad Mini Dock Series 3:320 GB
Discrete graphics card model
- T420 + Mini Dock:Intel® HD Graphics
- T520 + ThinkPad Mini Dock Series 3:Intel® HD Graphics 3000
Audio system
- T420 + Mini Dock:HDA
- T520 + ThinkPad Mini Dock Series 3:High Definition Audio
Bluetooth
- T420 + Mini Dock:No
- T520 + ThinkPad Mini Dock Series 3:Yes
USB 2.0 ports quantity
- T420 + Mini Dock:3
- T520 + ThinkPad Mini Dock Series 3:4
VGA (D-Sub) ports quantity
- T420 + Mini Dock:0
- T520 + ThinkPad Mini Dock Series 3:1
Firewire (IEEE 1394) ports
- T420 + Mini Dock:0
- T520 + ThinkPad Mini Dock Series 3:1

Side by side

Differences highlightedShow differences only

Comparison of T420 + Mini Dock, T520 + ThinkPad Mini Dock Series 3
156 specifications	A Lenovo T420 + Mini Dock View product	B Lenovo T520 + ThinkPad Mini Dock Series 3 View product
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Display1 differ
Display diagonalDiffers	35.6 cm (14")	39.6 cm (15.6")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
Native aspect ratio	16:9	16:9
LED backlightKnown for one	Unknown — not stated by the source	Yes
Display brightnessKnown for one	Unknown — not stated by the source	220 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	500:1
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i5	Intel® Core™ i5
Processor generation	2nd gen Intel® Core™ i5	2nd gen Intel® Core™ i5
Processor model	i5-2410M	i5-2410M
Processor cores	2	2
Processor threads	4	4
Processor boost frequency	2.9 GHz	2.9 GHz
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 socket	BGA 1023	BGA 1023
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Core i5-2400 Mobile Series	Intel Core i5-2400 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
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x8, 1x16, 2x4, 2x8	1x8, 1x16, 2x4, 2x8
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)	23	23
ECC supported by processor	No	No
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
Memory layout (slots x size)Known for one	Unknown — not stated by the source	2 x 2 GB
Storage2 differ
Total storage capacityDiffers	500 GB	320 GB
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Optical drive type	DVD-RW	DVD-RW
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MS PRO, SD	MMC, SD, SDHC, SDXC
Number of HDDs installedKnown for one	Unknown — not stated by the source	1
Graphics1 differ
On-board graphics card	Yes	Yes
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 3000
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)	1200 MHz	1200 MHz
On-board graphics card ID	0x116	0x116
Audio1 differ
Audio systemDiffers	HDA	High Definition Audio
Number of built-in speakers	2	2
Speaker powerKnown for one	Unknown — not stated by the source	1 W
Network1 differ
Mobile network connectionKnown for one	Yes	Unknown — not stated by the source
Mobile network generationKnown for one	4G	Unknown — not stated by the source
4G standardKnown for one	WiMAX	Unknown — not stated by the source
Wi-Fi	Yes	Yes
Ethernet LAN	Yes	Yes
BluetoothDiffers	No	Yes
WWANKnown for one	Installed	Unknown — not stated by the source
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
4G WiMAXKnown for one	Yes	Unknown — not stated by the source
Integrated 4G WiMAX	Yes	Yes
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	3	4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
eSATA/USB 2.0 ports quantityKnown for one	1	Unknown — not stated by the source
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	0	Unknown — not stated by the source
eSATA ports quantityKnown for one	0	Unknown — not stated by the source
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantityKnown for one	0	Unknown — not stated by the source
DisplayPorts quantity	1	1
Mini DisplayPorts quantityKnown for one	0	Unknown — not stated by the source
DVI port	No	No
VGA (D-Sub) ports quantityDiffers	0	1
Firewire (IEEE 1394) portsDiffers	0	1
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connectorDiffers	No	Yes
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slotDiffers	No	Yes
Modem (RJ-11) portsDiffers	0	1
TV-out	No	No
PS/2 ports quantityKnown for one	0	Unknown — not stated by the source
Parallel ports quantityKnown for one	0	Unknown — not stated by the source
Serial ports quantityKnown for one	0	Unknown — not stated by the source
USB 1.1 ports quantityKnown for one	0	Unknown — not stated by the source
Performanceidentical
Motherboard chipset	Intel® QM67 Express	Intel® QM67 Express
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Full-size keyboardKnown for one	No	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 featuresidentical
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
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™	No	No
Intel® My WiFi Technology (Intel® MWT)	Yes	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Processor ARK ID	52224	52224
Processor package size	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)	37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Poweridentical
DC-in jack	Yes	Yes
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	Kensington	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions5 differ
WeightDiffers	2.24 kg	2.51 kg
WidthDiffers	340 mm	372.8 mm
DepthDiffers	229.9 mm	245.1 mm
Height (front)Differs	2.99 cm	3.18 cm
Height (rear)Differs	3.04 cm	3.56 cm
Packaging contentidentical
AC adapter includedKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
Infrared data port	No	No
Video inKnown for one	0	Unknown — not stated by the source
Intel segment tagging	Home office, Small Business	Home office, Small Business
Supplied AC adapter type	AC	AC
Internal modemKnown for one	Unknown — not stated by the source	Yes
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Batteryidentical
Number of battery cellsKnown for one	Unknown — not stated by the source	6
Battery life (max)Known for one	Unknown — not stated by the source	7.7 h

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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