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Product comparison · 2 laptops

Lenovo L520 + Mini Dock vs Lenovo IdeaPad U400 Intel® Core™ i5 i5-2430M

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  • 140specifications compared
  • 43differ
  • 97identical
  • 38known for one product only

Key differences

  • Product colour
    • Black
    • Grey, Silver
  • Display diagonal
    • 39.6 cm (15.6")
    • 35.6 cm (14")
  • Processor family
    • Intel® Core™ i3
    • Intel® Core™ i5
  • Processor generation
    • 2nd gen Intel® Core™ i3
    • 2nd gen Intel® Core™ i5
  • Processor model
    • i3-2350M
    • i5-2430M
  • Processor frequency
    • 2.3 GHz
    • 2.4 GHz
  • Tjunction
    • 85 °C
    • 100 °C
  • CPU multiplier (bus/core ratio)
    • 23
    • 24

Side by side

Differences highlightedShow differences only
178 specifications
A

Lenovo

L520 + Mini DockView product
B

Lenovo

IdeaPad U400 Intel® Core™ i5 i5-2430M

Model U400

View product
Design1 differ
Product colourDiffersBlackGrey, Silver
Form factorKnown for oneClamshell
Display1 differ
Display diagonalDiffers39.6 cm (15.6")35.6 cm (14")
Display surfaceKnown for oneGloss
Display brightnessKnown for one200 cd/m²
Contrast ratio (typical)Known for one500:1
Processor7 differ
Processor familyDiffersIntel® Core™ i3Intel® Core™ i5
Processor generationDiffers2nd gen Intel® Core™ i32nd gen Intel® Core™ i5
Processor modelDiffersi3-2350Mi5-2430M
Processor frequencyDiffers2.3 GHz2.4 GHz
Processor seriesDiffersIntel Core i3-2300 Mobile SeriesIntel Core i5-2400 Mobile Series
TjunctionDiffers85 °C100 °C
CPU multiplier (bus/core ratio)Differs2324
Processor boost frequencyKnown for one3 GHz
Memory1 differ
Internal memoryDiffers4 GB8 GB
Memory slots (available)Known for one1
Storage6 differ
Total storage capacityDiffers500 GB750 GB
HDD capacityDiffers500 GB750 GB
HDD interfaceDiffersSATASATA II
HDD speedDiffers7200 RPM5400 RPM
Optical drive typeDiffersDVD-RWDVD Super Multi DL
Card reader integratedDiffersYesNo
Compatible memory cardsKnown for oneMMC, SD, SDHC, SDXC
Graphics2 differ
Graphics card familyDiffersIntelAMD, Intel
On-board graphics card dynamic frequency (max)Differs1150 MHz1200 MHz
Discrete graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneAMD Radeon HD 6470M
Number of discrete graphics cardsKnown for one1
Audio2 differ
Audio systemDiffersHDAHD
Speaker powerDiffers1.5 W2 W
Network1 differ
Wireless technologyKnown for oneWi-Fi
Ethernet LAN data ratesKnown for one10,100,1000 Mbit/s
BluetoothDiffersNoYes
Bluetooth versionKnown for one3.0+HS
Cabling technologyKnown for one10/100/1000Base-T(X)
LAN controllerKnown for oneIntel® 82579V
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers32
eSATA/USB 2.0 ports quantityDiffers10
HDMI ports quantityDiffers01
DisplayPorts quantityDiffers10
Microphone inDiffersYesNo
ExpressCard slotDiffersYesNo
VGA (D-Sub) ports quantityKnown for one0
Modem (RJ-11) portsKnown for one0
Keyboard1 differ
Pointing deviceDiffersThinkPad UltraNavTouchpad
Spill-resistant keyboardKnown for oneYes
Keyboard number of keysKnown for one80
Windows keysKnown for oneYes
Software1 differ
Operating system installedDiffersWindows 7 ProfessionalWindows 7 Home Premium
Processor special features5 differ
Intel® AES New Instructions (Intel® AES-NI)DiffersNoYes
Intel® Turbo Boost TechnologyDiffersNo2.0
Processor ARK IDDiffers5343853450
Processor codeDiffersSR0DNSR04W
Processor package sizeDiffers37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)37.5x37.5 (rPGA988B); 31 x 24 (BGA1023)
Battery2 differ
Battery technologyDiffersLithium-Ion (Li-Ion)Lithium Polymer (LiPo)
Number of battery cellsKnown for one6
Battery capacityDiffers2600 mAh54 Wh
Battery life (max)Known for one7 h
Poweridentical
AC adapter frequencyKnown for one50 - 60 Hz
AC adapter input voltageKnown for one100 - 240 V
Security2 differ
Cable lock slotDiffersYesNo
Fingerprint readerDiffersYesNo
Password protection typeKnown for oneHDD, Power on, Supervisor, User
Certificatesidentical
Wi-Fi certifiedKnown for oneYes
Compliance certificatesKnown for oneRoHS
Weight & dimensions5 differ
WeightDiffers2.6 kg1.98 kg
WidthDiffers380 mm340 mm
DepthDiffers247 mm230 mm
Height (front)Known for one3.2 cm
Height (rear)Known for one3.6 cm
Width (imperial)Differs38 cm (15")34 cm (13.4")
Depth (imperial)Differs24.7 cm (9.72")23.1 cm (9.1")
Height (front) (imperial)Known for one3.2 cm (1.26")
Height (rear) (imperial)Known for one3.61 cm (1.42")
HeightKnown for one22.6 mm
Height (imperial)Known for one2.26 cm (0.89")
Other featuresidentical
Compliance industry standardsKnown for oneIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Intel segment taggingKnown for oneHome office, Small Business
Internal modemKnown for oneNo
Cameraidentical
Front camera resolution (numeric)Known for one1.3 MP
Sustainabilityidentical
Sustainability certificatesKnown for oneEPEAT Gold, ENERGY STAR

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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