Product comparison · 2 laptops

Lenovo T420 + 45N6678 vs Lenovo ThinkPad X220 Tablet + ThinkPad Battery 19+

109specifications compared
25differ
84identical
36known for one product only

Key differences

Display diagonal
- T420 + 45N6678:35.6 cm (14")
- ThinkPad X220 Tablet + ThinkPad Battery 19+:31.8 cm (12.5")
Display resolution
- T420 + 45N6678:1600 x 900 pixels
- ThinkPad X220 Tablet + ThinkPad Battery 19+:1366 x 768 pixels
Display brightness
- T420 + 45N6678:250 cd/m²
- ThinkPad X220 Tablet + ThinkPad Battery 19+:300 cd/m²
Contrast ratio (typical)
- T420 + 45N6678:300:1
- ThinkPad X220 Tablet + ThinkPad Battery 19+:500:1
Processor family
- T420 + 45N6678:Intel® Core™ i7
- ThinkPad X220 Tablet + ThinkPad Battery 19+:Intel® Core™ i5
Processor generation
- T420 + 45N6678:2nd gen Intel® Core™ i7
- ThinkPad X220 Tablet + ThinkPad Battery 19+:2nd gen Intel® Core™ i5
Processor model
- T420 + 45N6678:i7-2620M
- ThinkPad X220 Tablet + ThinkPad Battery 19+:i5-2520M
Processor boost frequency
- T420 + 45N6678:3.4 GHz
- ThinkPad X220 Tablet + ThinkPad Battery 19+:3.2 GHz

Side by side

Differences highlightedShow differences only

Comparison of T420 + 45N6678, ThinkPad X220 Tablet + ThinkPad Battery 19+
145 specifications	A Lenovo T420 + 45N6678 View product	B Lenovo ThinkPad X220 Tablet + ThinkPad Battery 19+View product
Display4 differ
Display diagonalDiffers	35.6 cm (14")	31.8 cm (12.5")
Display resolutionDiffers	1600 x 900 pixels	1366 x 768 pixels
HD typeKnown for one	HD+	Unknown — not stated by the source
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display brightnessDiffers	250 cd/m²	300 cd/m²
Contrast ratio (typical)Differs	300:1	500:1
TouchscreenKnown for one	Unknown — not stated by the source	Yes
Processor9 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i7	Intel® Core™ i5
Processor generationDiffers	2nd gen Intel® Core™ i7	2nd gen Intel® Core™ i5
Processor modelDiffers	i7-2620M	i5-2520M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyDiffers	3.4 GHz	3.2 GHz
Processor frequencyDiffers	2.7 GHz	2.5 GHz
System bus rate	5 GT/s	5 GT/s
Processor cacheDiffers	4 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 i7-2600 Mobile Series	Intel Core i5-2500 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	1x16, 2x8, 1x8+2x4	1x16, 2x8, 1x8+2x4
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Differs	27	25
ECC supported by processor	No	No
Memoryidentical
Internal memory	4 GB	4 GB
Internal memory typeKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory clock speed	1333 MHz	1333 MHz
Memory slotsKnown for one	2x SO-DIMM	Unknown — not stated by the source
Maximum internal memory	8 GB	8 GB
Storageidentical
Total storage capacityKnown for one	500 GB	Unknown — not stated by the source
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
HDD speedKnown for one	7200 RPM	Unknown — not stated by the source
Optical drive typeKnown for one	DVD-RW	Unknown — not stated by the source
Card reader integrated	Yes	Yes
Compatible memory cards	MMC, SD, SDHC, SDXC	MMC, SD, SDHC, SDXC
SSD capacityKnown for one	Unknown — not stated by the source	160 GB
Graphicsidentical
On-board graphics card	Yes	Yes
Discrete graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card modelKnown for one	Intel® HD Graphics 3000	Unknown — not stated by the source
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)	1300 MHz	1300 MHz
On-board graphics card ID	0x116	0x116
Graphics cardKnown for one	Unknown — not stated by the source	HD Graphics 3000
Audioidentical
Audio system	High Definition Audio	High Definition Audio
Number of built-in speakers	2	2
Speaker powerKnown for one	1 W	Unknown — not stated by the source
Built-in microphoneKnown for one	Unknown — not stated by the source	Yes
Network1 differ
Mobile network connectionKnown for one	Yes	Unknown — not stated by the source
Mobile network generationKnown for one	3G	Unknown — not stated by the source
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ethernet LANKnown for one	Yes	Unknown — not stated by the source
BluetoothDiffers	No	Yes
Integrated 4G WiMAX	Yes	Yes
Bluetooth versionKnown for one	Unknown — not stated by the source	3.0+HS
Ports & interfaces1 differ
USB 2.0 ports quantity	3	3
eSATA/USB 2.0 ports quantityKnown for one	1	Unknown — not stated by the source
Ethernet LAN (RJ-45) ports	1	1
DisplayPorts quantity	1	1
DVI portKnown for one	No	Unknown — not stated by the source
VGA (D-Sub) ports quantity	1	1
Headphone outputs	1	1
S/PDIF out portKnown for one	No	Unknown — not stated by the source
Microphone in	Yes	Yes
Docking connectorDiffers	Yes	No
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantityKnown for one	0	Unknown — not stated by the source
CardBus PCMCIA slot typeKnown for one	No	Unknown — not stated by the source
SmartCard slotKnown for one	Yes	Unknown — not stated by the source
TV-outKnown for one	No	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Intel® QM67 Express	Unknown — not stated by the source
GPS (satellite)Known for one	Unknown — not stated by the source	No
Keyboardidentical
Pointing deviceKnown for one	ThinkPad UltraNav	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 features3 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	Yes	Yes
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)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
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	Yes	No
Intel® My WiFi Technology (Intel® MWT)	Yes	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Processor ARK IDDiffers	52231	52229
Processor codeDiffers	SR041	SR048
Processor package size	37.5 x 37.5 (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
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Battery1 differ
Number of battery cells	6	6
Battery life (max)Differs	9 h	8.8 h
Battery technologyKnown for one	Unknown — not stated by the source	Lithium-Ion (Li-Ion)
Poweridentical
DC-in jack	Yes	Yes
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	IBM	Kensington
Fingerprint reader	Yes	Yes
Trusted Platform Module (TPM)Known for one	Unknown — not stated by the source	Yes
HDD user passwordKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions5 differ
WeightDiffers	2.2 kg	1.8 kg
WidthDiffers	340.5 mm	305 mm
DepthDiffers	233 mm	228.7 mm
Height (front)Differs	3.01 cm	2.7 cm
Height (rear)Differs	3.05 cm	3.13 cm
Other featuresidentical
Infrared data portKnown for one	No	Unknown — not stated by the source
Intel segment taggingKnown for one	Home office, Small Business	Unknown — not stated by the source
Designidentical
Product typeKnown for one	Unknown — not stated by the source	Hybrid (2-in-1)
Form factorKnown for one	Unknown — not stated by the source	Convertible (Swivel)

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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