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Product comparison · 2 laptops

ASUS X51R-AG015A laptop Intel® Celeron® M 520 vs Lenovo ThinkPad 400 Intel® Core™2 Duo P8400

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  • 84specifications compared
  • 45differ
  • 39identical
  • 56known for one product only

Key differences

  • Display diagonal
    • 39.1 cm (15.4")
    • 35.8 cm (14.1")
  • Processor family
    • Intel® Celeron® M
    • Intel® Core™2 Duo
  • Processor model
    • 520
    • P8400
  • Processor cores
    • 1
    • 2
  • Processor frequency
    • 2.8 GHz
    • 2.26 GHz
  • Processor cache
    • 1 MB
    • 3 MB
  • Processor front side bus
    • 800 MHz
    • 1066 MHz
  • Processor socket
    • LGA 775 (Socket T)
    • Socket 478

Side by side

Differences highlightedShow differences only
140 specifications
A

ASUS

X51R-AG015A laptop Intel® Celeron® M 520

Model X51R-AG015A

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B

Lenovo

ThinkPad 400 Intel® Core™2 Duo P8400

Model 400

View product
Display1 differ
Display diagonalDiffers39.1 cm (15.4")35.8 cm (14.1")
Processor15 differ
Processor familyDiffersIntel® Celeron® MIntel® Core™2 Duo
Processor modelDiffers520P8400
Processor coresDiffers12
Processor frequencyDiffers2.8 GHz2.26 GHz
Processor cacheDiffers1 MB3 MB
Processor front side busDiffers800 MHz1066 MHz
Processor socketDiffersLGA 775 (Socket T)Socket 478
Processor lithographyDiffers90 nm45 nm
Processor operating modesDiffers32-bit64-bit
Processor seriesKnown for oneIntel Core 2 Duo P8000 Series
Processor codenameDiffersPrescottPenryn
SteppingKnown for oneM0
Thermal Design Power (TDP)Differs84 W25 W
TjunctionDiffers100 °C105 °C
Number of Processing Die TransistorsDiffers125 M410 M
Processing Die sizeDiffers112 mm²107 mm²
CPU multiplier (bus/core ratio)Differs128.5
ECC supported by processorKnown for oneNo
TcaseKnown for one67.7 °C
Processor core voltage (AC)Known for one0.95 - 1.30 V
Memory3 differ
Internal memory typeDiffersDDR2-SDRAMDDR3-SDRAM
Memory clock speedDiffers667 MHz1066 MHz
Maximum internal memoryDiffers2 GB4 GB
Storage2 differ
Optical drive typeDiffersDVD Super MultiDVD-ROM
Compatible memory cardsDiffersMemory Stick (MS), MMC, MS PRO, SDMemory Stick (MS), MMC, MS PRO, SD, SDHC
Graphics2 differ
Discrete graphics card modelDiffersIntel GMA X300Intel® GMA 4500MHD
Graphics card familyDiffersAMDIntel
Audio1 differ
Audio systemDiffersAzaliaHD
Number of built-in speakersKnown for one2
Speaker powerKnown for one1.5 W
Audio system full duplexKnown for oneYes
Audio system direct 3D soundKnown for oneYes
Network1 differ
Ethernet LANKnown for oneYes
BluetoothDiffersNoYes
Networking featuresKnown for oneFast Ethernet, WLAN
Wireless technologyKnown for oneWi-Fi
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers43
Firewire (IEEE 1394) portsDiffers01
Docking connectorDiffersNoYes
ExpressCard slotDiffersNoYes
CardBus PCMCIA slots quantityDiffers10
CardBus PCMCIA slot typeDiffersType IINo
TV-in portKnown for oneNo
PS/2 ports quantityKnown for one0
Parallel ports quantityKnown for one0
Serial ports quantityKnown for one0
Software1 differ
Operating system installedDiffersWindows Vista Home BasicWindows Vista Business
Operating system architectureKnown for one32-bit
Trial softwareKnown for oneSymantec Norton Internet Security 2006
Processor special features10 differ
Intel® Wireless Display (Intel® WiDi)Known for oneNo
Embedded options availableDiffersNoYes
Enhanced Intel SpeedStep TechnologyDiffersNoYes
Idle StatesDiffersNoYes
Intel Clear Video TechnologyKnown for oneNo
Intel Dual Display Capable TechnologyKnown for oneNo
Intel Enhanced Halt StateDiffersNoYes
Intel FDI TechnologyKnown for oneNo
Intel Fast Memory AccessKnown for oneNo
Intel Flex Memory AccessKnown for oneNo
Intel Rapid Storage TechnologyKnown for oneNo
Intel Trusted Execution TechnologyDiffersNoYes
Intel VT-x with Extended Page Tables (EPT)Known for oneNo
Intel Virtualization Technology (VT-x)DiffersNoYes
Intel Virtualization Technology for Directed I/O (VT-d)Known for oneNo
Intel® AES New Instructions (Intel® AES-NI)Known for oneNo
Intel® Anti-Theft Technology (Intel® AT)Known for oneNo
Intel® Clear Video HD Technology (Intel® CVT HD)Known for oneNo
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for oneNo
Intel® Hyper Threading Technology (Intel® HT Technology)DiffersYesNo
Intel® InTru™ 3D TechnologyKnown for oneNo
Intel® Insider™Known for oneNo
Intel® My WiFi Technology (Intel® MWT)Known for oneNo
Intel® Quick Sync Video TechnologyKnown for oneNo
Processor ARK IDDiffers2746035569
Processor codeKnown for oneSL3BU
Processor package sizeDiffers37.5 mm35 x 35 mm
Thermal Monitoring TechnologiesDiffersYesNo
Batteryidentical
Number of battery cellsKnown for one6
Poweridentical
AC adapter powerKnown for one65 W
AC adapter input voltageKnown for one100 - 240 V
AC adapter output currentKnown for one3.42 A
AC adapter output voltageKnown for one19 V
Security2 differ
Cable lock slot typeDiffersKensingtonIBM
Fingerprint readerKnown for oneYes
Password protection typeDiffersBIOSHDD
HDD user passwordKnown for oneYes
Weight & dimensions1 differ
WeightDiffers2.8 kg2.38 kg
WidthKnown for one335.5 mm
DepthKnown for one238 mm
HeightKnown for one32 mm
Dimensions (WxDxH)Known for one365 x 264 x 35.5 mm
Other featuresidentical
Intel segment taggingKnown for oneHome office, Small Business
Internal modemKnown for oneYes
TV tuner integratedKnown for oneNo
Modem speedKnown for one56 Kbit/s
Supplied AC adapter typeKnown for oneAC
Designidentical
Product colourKnown for oneSilver
Performanceidentical
Motherboard chipsetKnown for oneATI Radeon Xpress 1100
Keyboardidentical
Pointing deviceKnown for oneTouchpad
Keyboard number of keysKnown for one88

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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