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Product comparison · 2 laptops

Lenovo TS ThinkPad R51 Pentium M 725 1.6Ghz vs Lenovo TS ThinkPad R52 PM740 512 40 XPP AZB-FR

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  • 59specifications compared
  • 14differ
  • 45identical
  • 7known for one product only

Key differences

  • Processor frequency
    • 1.6 GHz
    • 1.73 GHz
  • Processor front side bus
    • 400 MHz
    • 533 MHz
  • Internal memory
    • 0.25 GB
    • 0.5 GB
  • Internal memory type
    • DDR-SDRAM
    • DDR2-SDRAM
  • Maximum graphics card memory
    • 0.064 GB
    • 0.128 GB
  • Graphics card interface
    • Direct AGP
    • PCI Express
  • CardBus PCMCIA slots quantity
    • 0
    • 1
  • CardBus PCMCIA slot type
    • No
    • Type II

Side by side

Differences highlightedShow differences only
66 specifications
A

Lenovo

TS ThinkPad R51 Pentium M 725 1.6GhzView product
B

Lenovo

TS ThinkPad R52 PM740 512 40 XPP AZB-FRView product
Displayidentical
Display diagonal38.1 cm (15")38.1 cm (15")
Display resolution1024 x 768 pixels1024 x 768 pixels
Native aspect ratio4:34:3
Contrast ratio (typical)750:1750:1
Processor2 differ
Processor manufacturerIntelIntel
Processor frequencyDiffers1.6 GHz1.73 GHz
Processor front side busDiffers400 MHz533 MHz
Memory2 differ
Internal memoryDiffers0.25 GB0.5 GB
Internal memory typeDiffersDDR-SDRAMDDR2-SDRAM
Storageidentical
Total storage capacity40 GB40 GB
HDD speed5400 RPM5400 RPM
Graphics2 differ
Discrete graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneIntel® GMA 900
Maximum graphics card memoryDiffers0.064 GB0.128 GB
Maximum resolution2048 x 1536 pixels2048 x 1536 pixels
Graphics card interfaceDiffersDirect AGPPCI Express
Audioidentical
Number of built-in speakers22
Cameraidentical
Front cameraNoNo
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/Bluetooth
Ports & interfaces2 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 connectorKnown for oneYes
CardBus PCMCIA slots quantityDiffers01
CardBus PCMCIA slot typeDiffersNoType II
SmartCard slotNoNo
Modem (RJ-11) ports11
TV-in portNoNo
TV-outYesYes
TV-out typeS-VideoS-Video
PS/2 ports quantity00
Parallel ports quantity11
Serial ports quantity00
USB 1.1 ports quantity00
I/O portsKnown for one•S-Video out •2 USB 2.0 •RJ-45 •Parallel •RJ-11 •Headphone/Line out •Infrared •IEEE 1394 •Line in •AC adapter •Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) •External microphone •External Display, USB, parallel, RJ-11, RJ-45, FIR, IEEE 1394
Keyboardidentical
Pointing deviceThinkPad UltraNavThinkPad UltraNav
Keyboard typeFull sizeFull size
Softwareidentical
Operating system installedWindows XP ProfessionalWindows XP Professional
Bundled softwareKnown for oneAccess IBM, IBM Access Connections, IBM Rescue and Recovery, Norton AntiVirus 2004 with 90 days of virus definition upgrades, PC Doctor diagnostics, Adobe Acrobat Reader
Battery1 differ
Number of battery cells66
Battery life (max)Differs4 h3.7 h
Poweridentical
DC-in jackYesYes
Securityidentical
Cable lock slotYesYes
Cable lock slot typeIBMIBM
Weight & dimensions3 differ
WeightDiffers2.7 kg2.8 kg
Width332 mm332 mm
Depth269 mm269 mm
HeightDiffers37 mm38 mm
Dimensions (WxDxH)Differs332 x 269 x 37 mm332 x 269 x 38 mm
Hard driveidentical
Storage drive typeATA-100 (Enhanced IDE)ATA-100 (Enhanced IDE)
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•IBM Embedded Security Subsystem 2.0 •IBM Security Slot •Power-on password •Supervisor password •Hard disk drive password
Battery typeKnown for one6 cell Li-Ion battery pack

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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