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Product comparison · 2 laptops

Lenovo ThinkPad X31 vs Lenovo TS ThinkPad R51 PM 735 1.7Ghz

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  • 47specifications compared
  • 19differ
  • 28identical
  • 20known for one product only

Key differences

  • Display diagonal
    • 30.7 cm (12.1")
    • 38.1 cm (15")
  • 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
  • Total storage capacity
    • 40 GB
    • 60 GB
  • Optical drive type
    • No
    • DVD-RW
  • Discrete graphics card model
    • AMD Mobility Radeon 7000
    • AMD Mobility Radeon 9000 IGP
  • Maximum graphics card memory
    • 0.016 GB
    • 0.032 GB

Side by side

Differences highlightedShow differences only
67 specifications
A

Lenovo

ThinkPad X31View product
B

Lenovo

TS ThinkPad R51 PM 735 1.7GhzView product
Display2 differ
Display diagonalDiffers30.7 cm (12.1")38.1 cm (15")
Display resolutionDiffers1024 x 768 pixels1400 x 1050 pixels
Native aspect ratio4:34:3
Processor1 differ
Processor frequencyDiffers1.6 GHz1.7 GHz
Processor cacheKnown for one1 MB
Processor cache typeKnown for oneL2
Processor front side bus400 MHz400 MHz
Processor manufacturerKnown for oneIntel
Memory1 differ
Internal memoryDiffers0.25 GB0.5 GB
Internal memory typeDDR-SDRAMDDR-SDRAM
Maximum internal memory2 GB2 GB
Storage2 differ
Total storage capacityDiffers40 GB60 GB
HDD interfaceKnown for oneUltra-ATA/100
HDD speedKnown for one4200 RPM
Optical drive typeDiffersNoDVD-RW
Graphics2 differ
Discrete graphics cardYesYes
Discrete graphics card modelDiffersAMD Mobility Radeon 7000AMD Mobility Radeon 9000 IGP
Maximum graphics card memoryDiffers0.016 GB0.032 GB
Graphics card interfaceKnown for oneAGP 4X
Audio1 differ
Audio systemSoundMAXSoundMAX
Number of built-in speakersDiffers12
Cameraidentical
Front cameraKnown for oneNo
Network1 differ
Networking featuresDiffersEthernet/Fast Ethernet/Gigabit EthernetEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g/Bluetooth
BluetoothKnown for oneNo
Ports & interfaces4 differ
USB 2.0 ports quantity22
Ethernet LAN (RJ-45) ports11
DVI portNoNo
VGA (D-Sub) ports quantity11
Firewire (IEEE 1394) ports11
Headphone outputs11
S/PDIF out portNoNo
Microphone inYesYes
Docking connectorDiffersYesNo
CardBus PCMCIA slots quantityDiffers10
CardBus PCMCIA slot typeDiffersType IINo
SmartCard slotNoNo
Modem (RJ-11) ports11
TV-in portNoNo
TV-outDiffersNoYes
PS/2 ports quantity00
Parallel ports quantity11
Serial ports quantity00
USB 1.1 ports quantity00
TV-out typeKnown for oneS-Video
Keyboard1 differ
Pointing deviceDiffersTrackpadThinkPad UltraNav
Keyboard typeKnown for oneFull size
Softwareidentical
Operating system installedWindows XP ProfessionalWindows XP Professional
Bundled softwareKnown for oneAccess Program, Rapid Restore Ultra, ThinkVantage Access Connections, Norton AntiVirus 2003 OEM Version, PC-Doctor, Adobe Acrobat Reader
Battery1 differ
Number of battery cells66
Battery life (max)Differs5.5 h3.7 h
Poweridentical
DC-in jackYesYes
Securityidentical
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneIBM
Weight & dimensions2 differ
WeightDiffers1.64 kg3 kg
WidthKnown for one273 mm
DepthKnown for one223 mm
HeightKnown for one30 mm
Dimensions (WxDxH)Differs273 x 223 x 30 mm332 x 269 x 38 mm
Other features1 differ
Infrared data portYesYes
Internal modemYesYes
Modem speed56 Kbit/s56 Kbit/s
Modem typeDiffersV.9256K V.92
Supplied AC adapter typeACAC
Security featuresKnown for one-Hard disk drive password -Power-on password -Security Slot -Supervisor password
Wake-on-LAN readyKnown for oneNo
Wake-on-Ring readyKnown for oneNo
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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