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Product comparison · 2 laptops

Lenovo THINKPAD X40 PMCLV738-1.4G vs Lenovo TS ThinkPad R51 Cent1600 512MB 60GB DVD

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  • 23specifications compared
  • 10differ
  • 13identical
  • 8known for one product only

Key differences

  • Display diagonal
    • 30.7 cm (12.1")
    • 38.1 cm (15")
  • Processor frequency
    • 1.4 GHz
    • 1.6 GHz
  • Total storage capacity
    • 40 GB
    • 60 GB
  • Graphics card interface
    • Direct AGP
    • AGP 4X
  • Battery life (max)
    • 7.5 h
    • 4 h
  • Weight
    • 1.24 kg
    • 2.6 kg
  • Dimensions (WxDxH)
    • 268 x 211 x 27 mm
    • 314 x 260 x 37 mm
  • Battery type
    • 8 Cell Lithium-Ion
    • 6 Cell Lithium-Ion

Side by side

Differences highlightedShow differences only
31 specifications
A

Lenovo

THINKPAD X40 PMCLV738-1.4GView product
B

Lenovo

TS ThinkPad R51 Cent1600 512MB 60GB DVDView product
Display1 differ
Display diagonalDiffers30.7 cm (12.1")38.1 cm (15")
Display resolution1024 x 768 pixels1024 x 768 pixels
Native aspect ratio4:34:3
Contrast ratio (typical)750:1750:1
Processor1 differ
Processor manufacturerIntelIntel
Processor frequencyDiffers1.4 GHz1.6 GHz
Processor front side busKnown for one400 MHz
Memoryidentical
Internal memory0.5 GB0.5 GB
Internal memory typeKnown for oneDDR-SDRAM
Storage1 differ
Total storage capacityDiffers40 GB60 GB
HDD speedKnown for one4200 RPM
Graphics1 differ
Maximum resolution2048 x 1536 pixels2048 x 1536 pixels
Graphics card interfaceDiffersDirect AGPAGP 4X
Discrete graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneAMD Mobility Radeon 7500
Maximum graphics card memoryKnown for one0.032 GB
Network1 differ
Networking featuresDiffersEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11gEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g/Bluetooth
Ports & interfaces1 differ
I/O portsDiffers-AC adapter -Expansion bus (for X4 UltraBase Dock) -External microphone -External Display -Headphone/Line out -Infrared -RJ-11 -RJ-45 -2 Universal Serial Bus (USB)-1 (EPP) -1 (IEEE 1394) -AC adapter -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) -External microphone -External Display -Headphone/Line out -Infrared -RJ-11 -RJ-45 -S-Video out -2 USB 2.0
Keyboardidentical
Keyboard typeFull sizeFull size
Softwareidentical
Bundled softwareKnown for oneAccess IBM, IBM Access Connections, IBM Rescue and Recovery with Rapid Restore, IBM Update Connector, Norton AntiVirus 2004 OEM Version, Norton AntiVirus 2004 with 90 days of virus definition upgrades, PC Doctor diagnostics, Adobe Acrobat Reader
Compatible operating systemsMicrosoft Windows XP ProfessionalMicrosoft Windows XP Professional
Battery1 differ
Battery life (max)Differs7.5 h4 h
Weight & dimensions2 differ
WeightDiffers1.24 kg2.6 kg
Dimensions (WxDxH)Differs268 x 211 x 27 mm314 x 260 x 37 mm
Hard driveidentical
Storage drive typeATA-100 (Enhanced IDE)ATA-100 (Enhanced IDE)
Other features1 differ
Security features-Hard disk drive password -IBM Embedded Security Subsystem 2.0 -IBM Security Slot -Power-on password -Supervisor password-Hard disk drive password -IBM Embedded Security Subsystem 2.0 -IBM Security Slot -Power-on password -Supervisor password
Battery typeDiffers8 Cell Lithium-Ion6 Cell Lithium-Ion
Internal modemYesYes
Modem speed56 Kbit/s56 Kbit/s
Supplied AC adapter typeACAC
Audioidentical
Number of built-in speakersKnown for one2

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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