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Product comparison · 2 laptops

Lenovo T420s + 45N6679 vs Lenovo W520 + 45N6678

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  • 116specifications compared
  • 35differ
  • 81identical
  • 36known for one product only

Key differences

  • Display diagonal
    • 35.6 cm (14")
    • 39.6 cm (15.6")
  • Display resolution
    • 1600 x 900 pixels
    • 1920 x 1080 pixels
  • HD type
    • HD+
    • Full HD
  • Processor model
    • i7-2620M
    • i7-2820QM
  • Processor cores
    • 2
    • 4
  • Processor threads
    • 4
    • 8
  • Processor frequency
    • 2.7 GHz
    • 2.3 GHz
  • Processor cache
    • 4 MB
    • 8 MB

Side by side

Differences highlightedShow differences only
152 specifications
A

Lenovo

T420s + 45N6679View product
B

Lenovo

W520 + 45N6678View product
Designidentical
Product colourKnown for oneBlack
Display3 differ
Display diagonalDiffers35.6 cm (14")39.6 cm (15.6")
Display resolutionDiffers1600 x 900 pixels1920 x 1080 pixels
HD typeDiffersHD+Full HD
Display brightnessKnown for one250 cd/m²
Contrast ratio (typical)Known for one300:1
Processor11 differ
Processor modelDiffersi7-2620Mi7-2820QM
Processor coresDiffers24
Processor threadsDiffers48
Processor frequencyDiffers2.7 GHz2.3 GHz
Processor cacheDiffers4 MB8 MB
Processor front side busKnown for one1333 MHz
Processor socketDiffersBGA 1023Socket 1224
Processor seriesDiffersIntel Core i7-2600 Mobile SeriesIntel Core i7-2800 Mobile Series
SteppingDiffersJ1D2
Thermal Design Power (TDP)Differs35 W45 W
TjunctionDiffers100 °C100 C
CPU multiplier (bus/core ratio)Differs2723
System bus rateKnown for one5 GT/s
Memory2 differ
Memory clock speedKnown for one1333 MHz
Memory slotsDiffers2x SO-DIMM4x SO-DIMM
Maximum internal memoryDiffers8 GB32 GB
Storage2 differ
Total storage capacityDiffers160 GB500 GB
Number of HDDs installedKnown for one1
HDD capacityKnown for one500 GB
HDD interfaceKnown for oneSATA
HDD speedKnown for one7200 RPM
Optical drive typeDiffersDVD-RWDVD-ROM
SSD capacityKnown for one160 GB
SSD interfaceKnown for oneSATA
Card reader integratedKnown for oneYes
Compatible memory cardsKnown for oneMMC, SD, SDHC, SDXC
Graphics1 differ
Discrete graphics card modelDiffersNVIDIA® NVS™ 4200MNVIDIA® Quadro® 2000M
Maximum resolutionKnown for one1920 x 1200 pixels
Network1 differ
Wireless technologyKnown for oneWi-Fi
BluetoothDiffersYesNo
Mobile network connectionKnown for oneYes
Mobile network generationKnown for one3G
Networking featuresKnown for oneGigabit Ethernet
Bluetooth versionKnown for one3.0+HS
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers21
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers12
eSATA/USB 2.0 ports quantityKnown for one1
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one0
eSATA ports quantityKnown for one0
HDMI ports quantityKnown for one0
Firewire (IEEE 1394) portsKnown for one0
Thunderbolt ports quantityKnown for one0
ExpressCard slotDiffersYesNo
SmartCard slotKnown for oneYes
Processor special features3 differ
Processor ARK IDDiffers5223152227
Processor codeDiffersSR041SR00U
Processor package sizeDiffers37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)37.5 x 37.5 (rPGA988B); 31.0 x 24.0 (BGA1224)
Battery2 differ
Number of battery cellsDiffers69
Battery life (max)Differs5.5 h9 h
Security1 differ
Cable lock slotDiffersYesNo
Cable lock slot typeKnown for oneIBM
Certificatesidentical
CertificationKnown for oneISV
Sustainabilityidentical
Sustainability certificatesKnown for oneENERGY STAR
Weight & dimensions5 differ
WeightDiffers1.67 kg2.7 kg
WidthDiffers343 mm372.8 mm
DepthDiffers230.1 mm245.1 mm
Height (front)Differs2.12 cm3.18 cm
Height (rear)Differs2.6 cm3.56 cm
Packaging contentidentical
AC adapter includedKnown for oneYes
Other features1 differ
Intel segment taggingDiffersHome office, Small BusinessProfessional
Supplied AC adapter typeKnown for oneAC
Audioidentical
Audio systemKnown for oneHigh Definition Audio
Number of built-in speakersKnown for one2
Speaker powerKnown for one1 W
Performanceidentical
Motherboard chipsetKnown for oneIntel® QM67 Express

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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