Product comparison · 2 laptops

Lenovo IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US vs Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP

31specifications compared
9differ
22identical
7known for one product only

Key differences

The Lenovo IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP 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 IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP 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 IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US has 1.1 h more battery life (max) than the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP (5.1 h vs 4 h). Display diagonal: 35.8 cm (14.1") on the Lenovo IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US, 38.1 cm (15") on the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP. Discrete graphics card model: AMD Mobility Radeon 7500 on the Lenovo IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US, AMD Mobility Radeon 9000 IGP on the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP.

Display diagonal
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:35.8 cm (14.1")
- ThinkPad R51 PM725 1600 256MB 40GB WXP:38.1 cm (15")
Processor frequency
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:1.7 GHz
- ThinkPad R51 PM725 1600 256MB 40GB WXP:1.6 GHz
Internal memory
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:0.5 GB
- ThinkPad R51 PM725 1600 256MB 40GB WXP:0.25 GB
Discrete graphics card model
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:AMD Mobility Radeon 7500
- ThinkPad R51 PM725 1600 256MB 40GB WXP:AMD Mobility Radeon 9000 IGP
Battery life (max)
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:5.1 h
- ThinkPad R51 PM725 1600 256MB 40GB WXP:4 h
Weight
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:2 kg
- ThinkPad R51 PM725 1600 256MB 40GB WXP:2.6 kg
Dimensions (WxDxH)
- IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US:311 x 255 x 27 mm
- ThinkPad R51 PM725 1600 256MB 40GB WXP:314 x 260 x 37 mm

Side by side

Differences highlightedShow differences only

Comparison of IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US, ThinkPad R51 PM725 1600 256MB 40GB WXP
38 specifications	A Lenovo IBM THINKPAD T42 P M-1.7(735) CENT. 512/40G/14/DVD/CDRW/WXP US View product	B Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP View product
Display1 differ
Display diagonalDiffers	35.8 cm (14.1")	38.1 cm (15")
Contrast ratio (typical)Known for one	Unknown — not stated by the source	750:1
Processor1 differ
Processor frequencyDiffers	1.7 GHz	1.6 GHz
Memory1 differ
Internal memoryDiffers	0.5 GB	0.25 GB
Storageidentical
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
Optical drive typeKnown for one	DVD-ROM	Unknown — not stated by the source
Graphics1 differ
Discrete graphics card modelDiffers	AMD Mobility Radeon 7500	AMD Mobility Radeon 9000 IGP
Audioidentical
Audio systemKnown for one	stereo	Unknown — not stated by the source
Ports & interfaces1 differ
I/O portsDiffers	-Infrared -Parallel -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) -External microphone -External Display -Headphone/Line out -AC adapter -RJ-11 -RJ-45 -S-Video out -2 USB 2.0	-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)
Softwareidentical
Bundled softwareKnown for one	Access IBM, IBM Access Connections, IBM Client Security Software (web-downloadable), IBM Drive Letter Access by Sonic, IBM Record Now, IBM Rescue and Recovery with Rapid Restore, Norton AntiVirus 2004 with 90 days of virus definition upgrades, PC-Doctor, IBM fingerprint software, InterVideo WinDVD C	Unknown — not stated by the source
Battery1 differ
Battery life (max)Differs	5.1 h	4 h
Weight & dimensions2 differ
WeightDiffers	2 kg	2.6 kg
Dimensions (WxDxH)Differs	311 x 255 x 27 mm	314 x 260 x 37 mm
WidthKnown for one	Unknown — not stated by the source	314 mm
DepthKnown for one	Unknown — not stated by the source	260 mm
Other features1 differ
Security featuresDiffers	-IBM Security Slot -Power-on password -Supervisor password -Hard disk drive password -Integrated fingerprint reader -IBM Embedded Security Subsystem 2.0	-Hard disk drive password -IBM Embedded Security Subsystem 2.0 -IBM Security Slot -Power-on password -Supervisor password

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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