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Product comparison · 2 laptops

Lenovo IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++) vs Lenovo THINKPAD R51 PM735-1.7G

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  • 29specifications compared
  • 10differ
  • 19identical
  • 4known for one product only

Key differences

The Lenovo THINKPAD R51 PM735-1.7G has 0.2 GHz more processor frequency than the Lenovo IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++) (1.7 GHz vs 1.5 GHz). The Lenovo THINKPAD R51 PM735-1.7G has 0.25 GB more internal memory than the Lenovo IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++) (0.5 GB vs 0.25 GB). The Lenovo IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++) has 1,200 RPM more HDD speed than the Lenovo THINKPAD R51 PM735-1.7G (5400 RPM vs 4200 RPM). Compatible operating systems: Microsoft Windows XP Home Edition on the Lenovo IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++), Microsoft Windows XP Professional on the Lenovo THINKPAD R51 PM735-1.7G. Dimensions (WxDxH): 332 x 269 x 38 mm on the Lenovo IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++), 332 x 269 x 37 mm on the Lenovo THINKPAD R51 PM735-1.7G.

  • Processor frequency
    • 1.5 GHz
    • 1.7 GHz
  • Internal memory
    • 0.25 GB
    • 0.5 GB
  • HDD speed
    • 5400 RPM
    • 4200 RPM
  • Number of built-in speakers
    • 1
    • 2
  • Dimensions (WxDxH)
    • 332 x 269 x 38 mm
    • 332 x 269 x 37 mm
  • Battery type
    • 6 Cell Lithium-Ion
    • 6 cell Li-Ion battery pack

Side by side

Differences highlightedShow differences only
33 specifications
A

Lenovo

IBM THINKPAD R50E P M-1.5(715) CENT. 256/40G/15/DVDCDRW/WXP NL TS(++)View product
B

Lenovo

THINKPAD R51 PM735-1.7GView product
Processor1 differ
Processor frequencyDiffers1.5 GHz1.7 GHz
Memory1 differ
Internal memoryDiffers0.25 GB0.5 GB
Internal memory typeKnown for oneDDR-SDRAM
Storage1 differ
HDD speedDiffers5400 RPM4200 RPM
Audio1 differ
Number of built-in speakersDiffers12
Network1 differ
Networking featuresDiffersEthernet/Fast Ethernet/IEEE 802.11b/IEEE 802.11gEthernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g
Ports & interfaces1 differ
I/O portsDiffers-1 (EPP) -AC adapter -External microphone -External Display -Headphone/Line out -RJ-11 -RJ-45 -2 USB 2.0•AC adapter •Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) •Line in •IEEE 1394 •2 USB 2.0 •S-Video out •Parallel •RJ-11 •RJ-45 •Infrared •External microphone •External Display •Headphone/Line out, USB, parallel, RJ-11, RJ-45, FIR, IEEE 1394
Software1 differ
Compatible operating systemsDiffersMicrosoft Windows XP Home EditionMicrosoft Windows XP Professional
Weight & dimensions1 differ
WeightKnown for one3 kg
Dimensions (WxDxH)Differs332 x 269 x 38 mm332 x 269 x 37 mm
WidthKnown for one332 mm
DepthKnown for one269 mm
Other features2 differ
Security featuresDiffers-Hard disk drive password -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 typeDiffers6 Cell Lithium-Ion6 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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