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Product comparison · 2 laptops

Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP US vs Lenovo ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXP

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  • 25specifications compared
  • 9differ
  • 16identical
  • 10known for one product only

Key differences

The Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP US has 0.1 GHz more processor frequency than the Lenovo ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXP (1.7 GHz vs 1.6 GHz). The Lenovo ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXP has 0.25 GB more internal memory than the Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP US (0.5 GB vs 0.25 GB). The Lenovo ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXP has 30 GB more total storage capacity than the Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP US (60 GB vs 30 GB). Display diagonal: 35.8 cm (14.1") on the Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP US, 38.1 cm (15") on the Lenovo ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXP. Graphics card interface: Direct AGP on the Lenovo IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP US, AGP 4X on the Lenovo ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXP.

  • Display diagonal
    • 35.8 cm (14.1")
    • 38.1 cm (15")
  • Processor frequency
    • 1.7 GHz
    • 1.6 GHz
  • Internal memory
    • 0.25 GB
    • 0.5 GB
  • Total storage capacity
    • 30 GB
    • 60 GB
  • Graphics card interface
    • Direct AGP
    • AGP 4X
  • Weight
    • 2.7 kg
    • 2.6 kg
  • Dimensions (WxDxH)
    • 314 x 260 x 34 mm
    • 314 x 260 x 37 mm

Side by side

Differences highlightedShow differences only
35 specifications
A

Lenovo

IBM THINKPAD R51 P M-1.7(735) CENT. 256/30G/14/DVD/WXP USView product
B

Lenovo

ThinkPad R51 PM-725 512MB 60GB 15.0 inch TFT Centrino 11b/g COMBO WXPView product
Display1 differ
Display diagonalDiffers35.8 cm (14.1")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 frequencyDiffers1.7 GHz1.6 GHz
Processor front side bus400 MHz400 MHz
Memory1 differ
Internal memoryDiffers0.25 GB0.5 GB
Internal memory typeKnown for oneDDR-SDRAM
Storage1 differ
Total storage capacityDiffers30 GB60 GB
HDD speed4200 RPM4200 RPM
Optical drive typeKnown for oneDVD-ROM
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
Audioidentical
Number of built-in speakers22
Optical driveidentical
DVD read speedKnown for one8x
Network1 differ
Networking featuresDiffersEthernet/Fast Ethernet/IEEE 802.11b/IEEE 802.11gEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g/Bluetooth
Ports & interfaces1 differ
I/O portsDiffers-External microphone -AC adapter -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) -External Display -Headphone/Line out -RJ-11 -RJ-45 -S-Video out -2 USB 2.0 -Infrared -Line in -Parallel-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
Keyboardidentical
Keyboard typeFull sizeFull size
Softwareidentical
Bundled softwareKnown for oneAccess IBM, IBM Access Connections, IBM Rescue and Recovery with Rapid Restore, Norton AntiVirus 2004, PC Doctor diagnostics, Intervideo WinDVD, Adobe Acrobat Reader
Compatible operating systemsMicrosoft Windows XP ProfessionalMicrosoft Windows XP Professional
Batteryidentical
Battery life (max)4 h4 h
Weight & dimensions2 differ
WeightDiffers2.7 kg2.6 kg
Dimensions (WxDxH)Differs314 x 260 x 34 mm314 x 260 x 37 mm
WidthKnown for one314 mm
DepthKnown for one260 mm
Hard driveidentical
Storage drive typeATA-100 (Enhanced IDE)ATA-100 (Enhanced IDE)
Other featuresidentical
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 type6 Cell Lithium-Ion6 Cell Lithium-Ion
Internal modemYesYes
Modem speed56 Kbit/s56 Kbit/s
Supplied AC adapter typeKnown for oneAC

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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