Product comparison · 2 laptops

Lenovo IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US vs Lenovo TS ThinkPad R51 Cent1600 512MB 60GB DVD

23specifications compared
11differ
12identical
8known for one product only

Key differences

Display diagonal
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:30.7 cm (12.1")
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:38.1 cm (15")
Processor frequency
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:1.4 GHz
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:1.6 GHz
Internal memory
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:0.25 GB
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:0.5 GB
Total storage capacity
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:40 GB
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:60 GB
Graphics card interface
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:Direct AGP
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:AGP 4X
Battery life (max)
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:7.5 h
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:4 h
Weight
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:1.24 kg
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:2.6 kg
Dimensions (WxDxH)
- IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US:268 x 211 x 27 mm
- TS ThinkPad R51 Cent1600 512MB 60GB DVD:314 x 260 x 37 mm

Side by side

Differences highlightedShow differences only

Comparison of IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US, TS ThinkPad R51 Cent1600 512MB 60GB DVD
31 specifications	A Lenovo IBM THINKPAD X40 P M-1.4(738) LOW VOLTAGE 256/40G/12/WXP US View product	B Lenovo TS ThinkPad R51 Cent1600 512MB 60GB DVD View product
Display1 differ
Display diagonalDiffers	30.7 cm (12.1")	38.1 cm (15")
Processor1 differ
Processor frequencyDiffers	1.4 GHz	1.6 GHz
Processor front side busKnown for one	400 MHz	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Internal memory typeKnown for one	DDR-SDRAM	Unknown — not stated by the source
Storage1 differ
Total storage capacityDiffers	40 GB	60 GB
HDD speedKnown for one	4200 RPM	Unknown — not stated by the source
Graphics1 differ
Graphics card interfaceDiffers	Direct AGP	AGP 4X
Discrete graphics cardKnown for one	Unknown — not stated by the source	Yes
Discrete graphics card modelKnown for one	Unknown — not stated by the source	AMD Mobility Radeon 7500
Maximum graphics card memoryKnown for one	Unknown — not stated by the source	0.032 GB
Network1 differ
Networking featuresDiffers	Ethernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11a/IEEE 802.11b/IEEE 802.11g/Bluetooth	Ethernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g/Bluetooth
Ports & interfaces1 differ
I/O portsDiffers	-AC adapter -Expansion bus (for X4 UltraBase Dock) -External microphone -External Display -Headphone/Line out -Infrared -RJ-11 -RJ-45 -2 Universal Serial Bus (USB)	-1 (EPP) -1 (IEEE 1394) -AC adapter -Expansion Bus port (for Dock II/Mini Dock or Port Replicator II) -External microphone -External Display -Headphone/Line out -Infrared -RJ-11 -RJ-45 -S-Video out -2 USB 2.0
Softwareidentical
Bundled softwareKnown for one	Access IBM, IBM Access Connections, IBM Rescue and Recovery with Rapid Restore, IBM Update Connector, Norton AntiVirus 2004 OEM Version, Norton AntiVirus 2004 with 90 days of virus definition upgrades, PC Doctor diagnostics, Adobe Acrobat Reader	Unknown — not stated by the source
Battery1 differ
Battery life (max)Differs	7.5 h	4 h
Weight & dimensions2 differ
WeightDiffers	1.24 kg	2.6 kg
Dimensions (WxDxH)Differs	268 x 211 x 27 mm	314 x 260 x 37 mm
Other features1 differ
Battery typeDiffers	8 Cell Lithium-Ion	6 Cell Lithium-Ion
Audioidentical
Number of built-in speakersKnown for one	Unknown — not stated by the source	2

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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