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Product comparison · 2 laptops

ASUS X51R-AG015A laptop Intel® Celeron® M 520 vs Lenovo ThinkPad T400 (6474-44G)

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  • 79specifications compared
  • 39differ
  • 40identical
  • 62known 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
141 specifications
A

ASUS

X51R-AG015A laptop Intel® Celeron® M 520

Model X51R-AG015A

View product
B

Lenovo

ThinkPad T400 (6474-44G)View product
Designidentical
Product colourKnown for oneSilver
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 codenameDiffersPrescottPenryn
Thermal Design Power (TDP)Differs84 W25 W
TcaseKnown for one67.7 °C
TjunctionDiffers100 °C105 °C
Processor core voltage (AC)Known for one0.95 - 1.30 V
Number of Processing Die TransistorsDiffers125 M410 M
Processing Die sizeDiffers112 mm²107 mm²
CPU multiplier (bus/core ratio)Differs128.5
Processor seriesKnown for oneIntel Core 2 Duo P8000 Series
SteppingKnown for oneM0
ECC supported by processorKnown for oneNo
Memory1 differ
Internal memoryDiffers1 GB3 GB
Internal memory typeKnown for oneDDR2-SDRAM
Memory clock speedKnown for one667 MHz
Memory slotsKnown for one2x SO-DIMM
Maximum internal memoryKnown for one2 GB
Memory layout (slots x size)Known for one1 x 1 + 1 x 2 GB
Storage2 differ
Total storage capacityDiffers80 GB160 GB
Optical drive typeDiffersDVD Super MultiDVD-ROM
Card reader integratedKnown for oneYes
Compatible memory cardsKnown for oneMemory Stick (MS), MMC, MS PRO, SD
Graphics2 differ
Discrete graphics card modelDiffersIntel GMA X300Intel® GMA X4500HD
Graphics card familyDiffersAMDIntel
Maximum graphics card memoryKnown for one0.384 GB
Audio1 differ
Audio systemDiffersAzaliaHD
Speaker powerKnown for one1.5 W
Audio system full duplexKnown for oneYes
Audio system direct 3D soundKnown for oneYes
Cameraidentical
Front cameraKnown for oneNo
Network1 differ
Networking featuresKnown for oneFast Ethernet, WLAN
Wireless technologyKnown for oneWi-Fi
BluetoothDiffersNoYes
Ethernet LANKnown for oneYes
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers43
Firewire (IEEE 1394) portsDiffers01
ExpressCard slotDiffersNoYes
TV-in portKnown for oneNo
Performanceidentical
Motherboard chipsetKnown for oneATI Radeon Xpress 1100
Keyboardidentical
Pointing deviceKnown for oneTouchpad
Keyboard number of keysKnown for one88
Software1 differ
Operating system installedDiffersWindows Vista Home BasicWindows Vista Business
Trial softwareKnown for oneSymantec Norton Internet Security 2006
Operating system architectureKnown for one32-bit
Processor special features10 differ
Embedded options availableDiffersNoYes
Enhanced Intel SpeedStep TechnologyDiffersNoYes
Idle StatesDiffersNoYes
Intel Enhanced Halt StateDiffersNoYes
Intel Trusted Execution TechnologyDiffersNoYes
Intel Virtualization Technology (VT-x)DiffersNoYes
Intel® Hyper Threading Technology (Intel® HT Technology)DiffersYesNo
Processor ARK IDDiffers2746035569
Processor package sizeDiffers37.5 mm35 x 35 mm
Thermal Monitoring TechnologiesDiffersYesNo
Intel® Wireless Display (Intel® WiDi)Known for oneNo
Intel Clear Video TechnologyKnown for oneNo
Intel Dual Display Capable TechnologyKnown for oneNo
Intel FDI TechnologyKnown for oneNo
Intel Fast Memory AccessKnown for oneNo
Intel Flex Memory AccessKnown for oneNo
Intel Rapid Storage TechnologyKnown for oneNo
Intel VT-x with Extended Page Tables (EPT)Known for oneNo
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® 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 codeKnown for oneSL3BU
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
Security1 differ
Cable lock slotDiffersYesNo
Cable lock slot typeKnown for oneKensington
Password protection typeKnown for oneBIOS
HDD user passwordKnown for oneYes
Weight & dimensions1 differ
WeightDiffers2.8 kg2.13 kg
Dimensions (WxDxH)Known for one365 x 264 x 35.5 mm
WidthKnown for one335.3 mm
DepthKnown for one238 mm
Height (front)Known for one2.76 cm
Height (rear)Known for one3.19 cm
Other featuresidentical
TV tuner integratedKnown for oneNo
Modem speedKnown for one56 Kbit/s
Supplied AC adapter typeKnown for oneAC
Intel segment taggingKnown for oneHome office, Small Business
Batteryidentical
Number of battery cellsKnown for one6

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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