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Product comparison · 2 laptops

Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP vs Lenovo ThinkPad T42 PM 735 512MB 40GB QW-US

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  • 31specifications compared
  • 10differ
  • 21identical
  • 7known for one product only

Key differences

The Lenovo ThinkPad T42 PM 735 512MB 40GB QW-US has 0.1 GHz more processor frequency than the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP (1.7 GHz vs 1.6 GHz). The Lenovo ThinkPad T42 PM 735 512MB 40GB QW-US has 0.25 GB more internal memory than the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP (0.5 GB vs 0.25 GB). The Lenovo ThinkPad T42 PM 735 512MB 40GB QW-US has 0.032 GB more maximum graphics card memory than the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP (0.064 GB vs 0.032 GB). Display resolution: 1024 x 768 pixels on the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP, 1400 x 1050 pixels on the Lenovo ThinkPad T42 PM 735 512MB 40GB QW-US. Discrete graphics card model: AMD Mobility Radeon 9000 IGP on the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP, AMD Mobility Radeon 9600 on the Lenovo ThinkPad T42 PM 735 512MB 40GB QW-US.

  • Display resolution
    • 1024 x 768 pixels
    • 1400 x 1050 pixels
  • Processor frequency
    • 1.6 GHz
    • 1.7 GHz
  • Internal memory
    • 0.25 GB
    • 0.5 GB
  • Discrete graphics card model
    • AMD Mobility Radeon 9000 IGP
    • AMD Mobility Radeon 9600
  • Maximum graphics card memory
    • 0.032 GB
    • 0.064 GB
  • Battery life (max)
    • 4 h
    • 5.8 h
  • Weight
    • 2.6 kg
    • 2.5 kg
  • Dimensions (WxDxH)
    • 314 x 260 x 37 mm
    • 329 x 268 x 31 mm

Side by side

Differences highlightedShow differences only
38 specifications
A

Lenovo

ThinkPad R51 PM725 1600 256MB 40GB WXPView product
B

Lenovo

ThinkPad T42 PM 735 512MB 40GB QW-USView product
Display1 differ
Display diagonal38.1 cm (15")38.1 cm (15")
Display resolutionDiffers1024 x 768 pixels1400 x 1050 pixels
Native aspect ratio4:34:3
Contrast ratio (typical)Known for one750:1
Processor1 differ
Processor manufacturerIntelIntel
Processor frequencyDiffers1.6 GHz1.7 GHz
Processor front side bus400 MHz400 MHz
Memory1 differ
Internal memoryDiffers0.25 GB0.5 GB
Storageidentical
Total storage capacity40 GB40 GB
HDD speedKnown for one5400 RPM
Optical drive typeKnown for oneDVD-ROM
Graphics2 differ
Discrete graphics cardYesYes
Discrete graphics card modelDiffersAMD Mobility Radeon 9000 IGPAMD Mobility Radeon 9600
Maximum graphics card memoryDiffers0.032 GB0.064 GB
Maximum resolution2048 x 1536 pixels2048 x 1536 pixels
Graphics card interfaceAGP 4XAGP 4X
Audioidentical
Audio systemKnown for onestereo
Number of built-in speakers22
Optical driveidentical
CD read speed24x24x
CD write speed24x24x
CD rewrite speed24x24x
DVD read speed8x8x
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
Ports & interfaces1 differ
I/O portsDiffers-External Display -Headphone/Line out -Infrared -Parallel -RJ-11 -RJ-45 -S-Video out -2 USB 2.0 -External microphone -AC adapter -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II)-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 Drive Letter Access, IBM Record Now, IBM Rescue and Recovery with Rapid Restore, Norton AntiVirus 2004, PC-Doctor, InterVideo WinDVD Creator, Intervideo WinDVD, Adobe Acrobat Reader
Compatible operating systemsMicrosoft Windows XP ProfessionalMicrosoft Windows XP Professional
Battery1 differ
Battery life (max)Differs4 h5.8 h
Weight & dimensions2 differ
WeightDiffers2.6 kg2.5 kg
Dimensions (WxDxH)Differs314 x 260 x 37 mm329 x 268 x 31 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 typeACAC

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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