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Product comparison · 2 laptops

Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US vs Lenovo ThinkPad R51, DK

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  • 26specifications compared
  • 12differ
  • 14identical
  • 8known for one product only

Key differences

  • Display diagonal
    • 35.8 cm (14.1")
    • 38.1 cm (15")
  • Display resolution
    • 1024 x 768 pixels
    • 1400 x 1050 pixels
  • Processor frequency
    • 1.7 GHz
    • 2 GHz
  • Internal memory
    • 0.25 GB
    • 1 GB
  • Total storage capacity
    • 40 GB
    • 80 GB
  • Discrete graphics card model
    • AMD Mobility Radeon
    • AMD Mobility Radeon 9000 IGP
  • Battery life (max)
    • 4 h
    • 5.6 h
  • Weight
    • 2.6 kg
    • 2.8 kg

Side by side

Differences highlightedShow differences only
34 specifications
A

Lenovo

IBM THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP USView product
B

Lenovo

ThinkPad R51, DKView product
Display2 differ
Display diagonalDiffers35.8 cm (14.1")38.1 cm (15")
Display resolutionDiffers1024 x 768 pixels1400 x 1050 pixels
Native aspect ratio4:34:3
Contrast ratio (typical)750:1750:1
Processor1 differ
Processor frequencyDiffers1.7 GHz2 GHz
Processor front side bus400 MHz400 MHz
Processor manufacturerKnown for oneIntel
Memory1 differ
Internal memoryDiffers0.25 GB1 GB
Internal memory typeDDR-SDRAMDDR-SDRAM
Storage1 differ
Total storage capacityDiffers40 GB80 GB
HDD speedKnown for one4200 RPM
Graphics1 differ
Discrete graphics cardYesYes
Discrete graphics card modelDiffersAMD Mobility RadeonAMD Mobility Radeon 9000 IGP
Maximum graphics card memory0.032 GB0.032 GB
Maximum resolution2048 x 1536 pixels2048 x 1536 pixels
Graphics card interfaceAGP 4XAGP 4X
Audioidentical
Number of built-in speakers22
Optical driveidentical
CD read speedKnown for one24x
CD write speedKnown for one24x
CD rewrite speedKnown for one24x
DVD read speedKnown for one8x
Network1 differ
Networking featuresDiffersEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g/BluetoothEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11a/IEEE 802.11b/IEEE 802.11g/Bluetooth
Ports & interfaces1 differ
I/O portsDiffers-AC adapter -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) -External microphone -External Display -Headphone/Line out -Infrared -Parallel -RJ-11 -RJ-45 -S-Video out -2 USB 2.0-2 USB 2.0 -S-Video out -RJ-45 -RJ-11 -Parallel -Infrared -Headphone/Line out -External Display -External microphone -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) -AC adapter
Keyboardidentical
Keyboard typeFull sizeFull size
Softwareidentical
Compatible operating systemsMicrosoft Windows XP ProfessionalMicrosoft Windows XP Professional
Battery1 differ
Battery life (max)Differs4 h5.6 h
Weight & dimensions2 differ
WeightDiffers2.6 kg2.8 kg
Dimensions (WxDxH)Differs314 x 260 x 33 mm332 x 269 x 38 mm
Other features1 differ
Security featuresDiffers-Supervisor password -Hard disk drive password -IBM Embedded Security Subsystem 2.0 -IBM Security Slot -Power-on password-Supervisor password -Power-on password -IBM Security Slot -IBM Embedded Security Subsystem 2.0 -Hard disk drive password
Internal modemYesYes
Modem speed56 Kbit/s56 Kbit/s
Supplied AC adapter typeACAC
Battery typeKnown for one9 Cell Lithium-Ion
Hard driveidentical
Storage drive typeKnown for oneATA-100 (Enhanced IDE)

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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