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Product comparison · 2 laptops

Lenovo T420 Win 7 US vs Lenovo X121e + warranty extension

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  • 99specifications compared
  • 35differ
  • 64identical
  • 54known for one product only

Key differences

  • Display diagonal
    • 35.6 cm (14")
    • 29.5 cm (11.6")
  • Display resolution
    • 1600 x 900 pixels
    • 1366 x 768 pixels
  • Processor family
    • Intel® Core™ i7
    • Intel® Core™ i3
  • Processor generation
    • 2nd gen Intel® Core™ i7
    • 2nd gen Intel® Core™ i3
  • Processor model
    • i7-2620M
    • i3-2357M
  • Processor frequency
    • 2.7 GHz
    • 1.3 GHz
  • Processor cache
    • 4 MB
    • 3 MB
  • Processor cache type
    • Smart Cache
    • L3

Side by side

Differences highlightedShow differences only
153 specifications
A

Lenovo

T420 Win 7 USView product
B

Lenovo

X121e + warranty extensionView product
Designidentical
Product colourKnown for oneBlack
Display2 differ
Display diagonalDiffers35.6 cm (14")29.5 cm (11.6")
Display resolutionDiffers1600 x 900 pixels1366 x 768 pixels
HD typeKnown for oneHD+
Display surfaceKnown for oneMatt
Display brightnessKnown for one200 cd/m²
Contrast ratio (typical)Known for one300:1
Processor9 differ
Processor familyDiffersIntel® Core™ i7Intel® Core™ i3
Processor generationDiffers2nd gen Intel® Core™ i72nd gen Intel® Core™ i3
Processor modelDiffersi7-2620Mi3-2357M
Processor boost frequencyKnown for one3.4 GHz
Processor frequencyDiffers2.7 GHz1.3 GHz
Processor cacheDiffers4 MB3 MB
Processor cache typeDiffersSmart CacheL3
Processor socketKnown for oneBGA 1023
Processor seriesDiffersIntel Core i7-2600 Mobile SeriesIntel Core i3-2300 Mobile Series
FSB ParityKnown for oneNo
SteppingKnown for oneJ1
Thermal Design Power (TDP)Differs35 W17 W
PCI Express configurationsDiffers1x16, 2x8, 1x8+2x41x16, 1x8+2x4, 2x8
CPU multiplier (bus/core ratio)Known for one27
Memory1 differ
Memory clock speedKnown for one1333 MHz
Maximum internal memoryDiffers16 GB8 GB
Storage2 differ
Total storage capacityDiffers500 GB320 GB
HDD capacityKnown for one500 GB
Optical drive typeDiffersDVD-RWNo
Number of HDDs installedKnown for one1
Compatible memory cardsKnown for oneMMC, SD, SDHC, SDXC
Graphics4 differ
On-board graphics cardKnown for oneYes
Discrete graphics card modelDiffersNVIDIA® NVS™ 4200MIntel® HD Graphics 3000
Graphics card familyDiffersNVIDIAIntel
On-board graphics card familyKnown for oneIntel® HD Graphics
On-board graphics card base frequencyDiffers650 MHz350 MHz
On-board graphics card dynamic frequency (max)Differs1300 MHz950 MHz
On-board graphics card IDKnown for one0x116
Network1 differ
Wi-Fi standardsDiffers802.11a, 802.11b, 802.11g802.11b, 802.11g, Wi-Fi 4 (802.11n)
Cabling technologyKnown for one10/100/1000Base-T(X)
Mobile network connectionKnown for oneYes
Mobile network generationKnown for one3G
Bluetooth versionKnown for one3.0+HS
Ports & interfaces3 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0
eSATA/USB 2.0 ports quantityKnown for one0
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one0
eSATA ports quantityKnown for one1
HDMI ports quantityDiffers01
DisplayPorts quantityKnown for one1
Firewire (IEEE 1394) portsKnown for one0
Thunderbolt ports quantityKnown for one0
ExpressCard slotDiffersYesNo
SmartCard slotDiffersNoYes
Modem (RJ-11) portsKnown for one1
Performance1 differ
Motherboard chipsetDiffersIntel® QM67 ExpressIntel® HM65 Express
Keyboard1 differ
Pointing deviceDiffersTouchpadThinkPad UltraNav
Processor special features6 differ
Intel® Wireless Display (Intel® WiDi)Known for oneYes
Graphics & IMC lithographyKnown for one32 nm
Intel Clear Video TechnologyKnown for oneNo
Intel Dual Display Capable TechnologyKnown for oneYes
Intel Enhanced Halt StateKnown for oneYes
Intel Identity Protection Technology versionKnown for one1.00
Intel Rapid Storage TechnologyKnown for oneNo
Intel Trusted Execution TechnologyDiffersYesNo
Intel Virtualization Technology for Directed I/O (VT-d)DiffersYesNo
Intel® AES New Instructions (Intel® AES-NI)DiffersYesNo
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for oneNo
Intel® Insider™Known for oneYes
Intel® Turbo Boost TechnologyDiffers2.0No
Processor ARK IDKnown for one52231
Processor codeKnown for oneSR041
Processor package sizeDiffers37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)31 x 24 mm
Conflict-Free processorDiffersNoYes
Battery1 differ
Number of battery cellsDiffers96
Battery life (max)Known for one9.3 h
Security1 differ
Cable lock slot typeDiffersKensingtonIBM
Fingerprint readerKnown for oneYes
Weight & dimensions3 differ
WeightDiffers2.35 kg1.55 kg
WidthDiffers341 mm289.6 mm
DepthDiffers258 mm208 mm
Height (front)Known for one3 cm
Height (rear)Known for one3.1 cm
HeightKnown for one23.5 mm
Other featuresidentical
Power supply typeKnown for oneAC/DC
TV tuner integratedKnown for oneNo
Intel segment taggingKnown for oneHome office, Small Business
Supplied AC adapter typeKnown for oneAC
Audioidentical
Audio systemKnown for oneHigh Definition Audio
Number of built-in speakersKnown for one2
Speaker powerKnown for one2 W
Built-in microphoneKnown for oneYes
Cameraidentical
Front camera resolution (numeric)Known for one0.3 MP

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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