Product comparison · 2 laptops

Lenovo L512 + Mini Dock vs Lenovo ThinkPad T420 Intel® Core™ i7 i7-2620M

122specifications compared
46differ
76identical
44known for one product only

Key differences

Display diagonal
- L512 + Mini Dock:39.6 cm (15.6")
- ThinkPad T420 Intel® Core™ i7 i7-2620M:35.6 cm (14")
Display resolution
- L512 + Mini Dock:1366 x 768 pixels
- ThinkPad T420 Intel® Core™ i7 i7-2620M:1600 x 900 pixels
Processor family
- L512 + Mini Dock:Intel® Core™ i3
- ThinkPad T420 Intel® Core™ i7 i7-2620M:Intel® Core™ i7
Processor generation
- L512 + Mini Dock:Intel® Core™ i3
- ThinkPad T420 Intel® Core™ i7 i7-2620M:2nd gen Intel® Core™ i7
Processor model
- L512 + Mini Dock:i3-380M
- ThinkPad T420 Intel® Core™ i7 i7-2620M:i7-2620M
Processor frequency
- L512 + Mini Dock:2.53 GHz
- ThinkPad T420 Intel® Core™ i7 i7-2620M:2.7 GHz
System bus rate
- L512 + Mini Dock:2.5 GT/s
- ThinkPad T420 Intel® Core™ i7 i7-2620M:5 GT/s
Processor cache
- L512 + Mini Dock:3 MB
- ThinkPad T420 Intel® Core™ i7 i7-2620M:4 MB

Side by side

Differences highlightedShow differences only

Comparison of L512 + Mini Dock, T420
166 specifications	A Lenovo L512 + Mini Dock View product	B Lenovo ThinkPad T420 Intel® Core™ i7 i7-2620M Model T420 View product
Display2 differ
Display diagonalDiffers	39.6 cm (15.6")	35.6 cm (14")
Display resolutionDiffers	1366 x 768 pixels	1600 x 900 pixels
HD typeKnown for one	Unknown — not stated by the source	HD+
Native aspect ratio	16:9	16:9
Display brightnessKnown for one	Unknown — not stated by the source	230 cd/m²
LED backlightKnown for one	Yes	Unknown — not stated by the source
Processor12 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i7
Processor generationDiffers	Intel® Core™ i3	2nd gen Intel® Core™ i7
Processor modelDiffers	i3-380M	i7-2620M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.4 GHz
Processor frequencyDiffers	2.53 GHz	2.7 GHz
System bus rateDiffers	2.5 GT/s	5 GT/s
Processor cacheDiffers	3 MB	4 MB
Processor cache type	Smart Cache	Smart Cache
L3 cacheKnown for one	Unknown — not stated by the source	4 MB
L2 cacheKnown for one	Unknown — not stated by the source	4 MB
Processor socketDiffers	PGA988	BGA 1023
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i3-300 Mobile Series	Intel Core i7-2600 Mobile Series
Processor codenameDiffers	Arrandale	Sandy Bridge
Bus type	DMI	DMI
FSB Parity	No	No
SteppingKnown for one	Unknown — not stated by the source	J1
Thermal Design Power (TDP)	35 W	35 W
TjunctionDiffers	90 °C	100 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurationsDiffers	1x16	1x16, 2x8, 1x8+2x4
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Differs	19	27
ECC supported by processor	No	No
Number of Processing Die TransistorsKnown for one	382 M	Unknown — not stated by the source
Processing Die sizeKnown for one	81 mm²	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	2 GB	4 GB
Memory clock speed	1333 MHz	1333 MHz
Memory slotsKnown for one	Unknown — not stated by the source	2x SO-DIMM
Maximum internal memory	8 GB	8 GB
Internal memory typeKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Storage1 differ
Total storage capacityDiffers	320 GB	500 GB
HDD capacityKnown for one	Unknown — not stated by the source	500 GB
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Optical drive type	DVD-RW	DVD-RW
Card reader integrated	Yes	Yes
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
Graphics3 differ
On-board graphics card	Yes	Yes
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 3000
On-board graphics card base frequencyDiffers	500 MHz	650 MHz
On-board graphics card dynamic frequency (max)Differs	667 MHz	1300 MHz
On-board graphics card IDKnown for one	Unknown — not stated by the source	0x116
Maximum resolutionKnown for one	Unknown — not stated by the source	2048 x 1536 pixels
Discrete graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card modelKnown for one	Intel HD	Unknown — not stated by the source
Graphics card familyKnown for one	Intel	Unknown — not stated by the source
Audioidentical
Audio system	HDA	HDA
Number of built-in speakers	2	2
Speaker powerKnown for one	Unknown — not stated by the source	1 W
Audio includedKnown for one	Unknown — not stated by the source	Mute Button, Speakers (integrated)
Networkidentical
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Wireless technology	Wi-Fi	Wi-Fi
Ethernet LAN	Yes	Yes
Bluetooth	Yes	Yes
Cabling technology	10/100/1000Base-T(X)	10/100/1000Base-T(X)
Integrated 4G WiMAXKnown for one	Unknown — not stated by the source	Yes
Bluetooth versionKnown for one	2.1+EDR	Unknown — not stated by the source
WWANKnown for one	Installed	Unknown — not stated by the source
Ports & interfaces4 differ
USB 2.0 ports quantityDiffers	4	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
eSATA/USB 2.0 ports quantityDiffers	0	1
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantity	0	0
eSATA ports quantityDiffers	1	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	0	0
DisplayPorts quantity	1	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
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 connectorDiffers	Yes	No
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
TV-out	No	No
Modem (RJ-11) portsKnown for one	0	Unknown — not stated by the source
TV-in portKnown for one	No	Unknown — not stated by the source
Performance1 differ
Motherboard chipsetDiffers	Intel® HM55 Express	Intel® QM67 Express
Keyboardidentical
Pointing device	ThinkPad UltraNav	ThinkPad UltraNav
Keyboard typeKnown for one	Unknown — not stated by the source	7-row with Trackpoint
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Processor special features16 differ
Intel® Wireless Display (Intel® WiDi)Differs	No	Yes
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithographyDiffers	45 nm	32 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyDiffers	Yes	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 versionKnown for one	Unknown — not stated by the source	1.00
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	No	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)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Anti-Theft Technology (Intel® AT)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Differs	Yes	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)Known for one	Unknown — not stated by the source	Yes
Intel® InTru™ 3D TechnologyDiffers	No	Yes
Intel® Insider™Differs	No	Yes
Intel® My WiFi Technology (Intel® MWT)Differs	No	Yes
Intel® Quick Sync Video TechnologyDiffers	No	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Processor ARK IDDiffers	50178	52231
Processor codeKnown for one	Unknown — not stated by the source	SR041
Processor package sizeDiffers	rPGA 37.5x 37.5, BGA 34x28	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)
Supported instruction setsDiffers	SSE4.1/4.2	AVX
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Physical Address Extension (PAE)Known for one	36 bit	Unknown — not stated by the source
Batteryidentical
Battery life (max)Known for one	Unknown — not stated by the source	9 h
Number of battery cellsKnown for one	6	Unknown — not stated by the source
Poweridentical
AC adapter powerKnown for one	Unknown — not stated by the source	65 W
DC-in jack	Yes	Yes
Security1 differ
Cable lock slotDiffers	Yes	No
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Fingerprint readerKnown for one	Yes	Unknown — not stated by the source
Sustainabilityidentical
Sustainability certificatesKnown for one	Unknown — not stated by the source	ENERGY STAR
Weight & dimensions5 differ
WeightDiffers	2.61 kg	2.24 kg
WidthDiffers	380 mm	340 mm
DepthDiffers	247 mm	229.8 mm
HeightKnown for one	Unknown — not stated by the source	21.2 mm
Height (front)Differs	3.2 cm	2.99 cm
Height (rear)Differs	3.6 cm	3.04 cm
Hard driveidentical
Storage drive typeKnown for one	Unknown — not stated by the source	500GB SATA/ 7200
Packaging contentidentical
AC adapter included	Yes	Yes
Other featuresidentical
Security featuresKnown for one	Unknown — not stated by the source	Client Security Solution, Hard disk drive password, Power-on password, Security lock slot, Supervisor password Fingerprint Reader
Infrared data port	No	No
Battery typeKnown for one	Unknown — not stated by the source	6 Cell Lithium-Ion
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Power requirements	100 - 240V	100 - 240V
Power supply type	AC/DC	AC/DC
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Modem typeKnown for one	Unknown — not stated by the source	56K V.92
Intel segment tagging	Home office, Small Business	Home office, Small Business
Manageability featuresKnown for one	Unknown — not stated by the source	Client Security Solution, ThinkVantage Access Connections, ThinkVantage Active Protection System, ThinkVantage Rescue and Recovery
Drive baysKnown for one	Unknown — not stated by the source	Ultrabay Enhanced
Supplied AC adapter type	AC	AC

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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