Product comparison · 2 laptops

Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US vs Lenovo THINKPAD R51 PM735-1.7G

25specifications compared
11differ
14identical
12known for one product only

Key differences

The Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US has 0.16 GHz more processor frequency than the Lenovo THINKPAD R51 PM735-1.7G (1.86 GHz vs 1.7 GHz). The Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US has 133 MHz more processor front side bus than the Lenovo THINKPAD R51 PM735-1.7G (533 MHz vs 400 MHz). The Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US has 20 GB more total storage capacity than the Lenovo THINKPAD R51 PM735-1.7G (60 GB vs 40 GB). Graphics card interface: PCI Express on the Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US, Direct AGP on the Lenovo THINKPAD R51 PM735-1.7G. Dimensions (WxDxH): 329 x 268 x 31 mm on the Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US, 332 x 269 x 37 mm on the Lenovo THINKPAD R51 PM735-1.7G.

Processor frequency
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:1.86 GHz
- THINKPAD R51 PM735-1.7G:1.7 GHz
Processor front side bus
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:533 MHz
- THINKPAD R51 PM735-1.7G:400 MHz
Total storage capacity
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:60 GB
- THINKPAD R51 PM735-1.7G:40 GB
HDD speed
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:7200 RPM
- THINKPAD R51 PM735-1.7G:4200 RPM
Graphics card interface
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:PCI Express
- THINKPAD R51 PM735-1.7G:Direct AGP
Battery life (max)
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:3.7 h
- THINKPAD R51 PM735-1.7G:4 h
Dimensions (WxDxH)
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:329 x 268 x 31 mm
- THINKPAD R51 PM735-1.7G:332 x 269 x 37 mm
Battery type
- IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US:6 Cell Lithium-Ion
- THINKPAD R51 PM735-1.7G:6 cell Li-Ion battery pack

Side by side

Differences highlightedShow differences only

Comparison of IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US, THINKPAD R51 PM735-1.7G
37 specifications	A Lenovo IBM THINKPAD T43 P M-1.86 (750)CENT. 512/60G/15/DVDRW/WXP US View product	B Lenovo THINKPAD R51 PM735-1.7G View product
Displayidentical
Display diagonal	38.1 cm (15")	38.1 cm (15")
Display resolution	1024 x 768 pixels	1024 x 768 pixels
Native aspect ratio	4:3	4:3
Contrast ratio (typical)	750:1	750:1
Processor2 differ
Processor manufacturer	Intel	Intel
Processor frequencyDiffers	1.86 GHz	1.7 GHz
Processor front side busDiffers	533 MHz	400 MHz
Memoryidentical
Internal memory	0.5 GB	0.5 GB
Internal memory typeKnown for one	DDR2-SDRAM	Unknown — not stated by the source
Storage2 differ
Total storage capacityDiffers	60 GB	40 GB
HDD speedDiffers	7200 RPM	4200 RPM
Graphics1 differ
Discrete graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card modelKnown for one	AMD Mobility Radeon X300	Unknown — not stated by the source
Maximum graphics card memoryKnown for one	0.064 GB	Unknown — not stated by the source
Maximum resolution	2048 x 1536 pixels	2048 x 1536 pixels
Graphics card interfaceDiffers	PCI Express	Direct AGP
Audioidentical
Audio systemKnown for one	stereo	Unknown — not stated by the source
Number of built-in speakers	2	2
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
Ports & interfaces1 differ
I/O portsDiffers	-AC adapter -Docking/Port Replicator -External microphone -External Display -Headphone/Line out -S-Video out -2 USB 2.0 -Parallel -RJ-11 -Infrared -RJ-45	•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
Keyboardidentical
Keyboard type	Full size	Full size
Softwareidentical
Compatible operating systems	Microsoft Windows XP Professional	Microsoft Windows XP Professional
Battery1 differ
Battery life (max)Differs	3.7 h	4 h
Weight & dimensions1 differ
WeightKnown for one	2.4 kg	Unknown — not stated by the source
Dimensions (WxDxH)Differs	329 x 268 x 31 mm	332 x 269 x 37 mm
WidthKnown for one	Unknown — not stated by the source	332 mm
DepthKnown for one	Unknown — not stated by the source	269 mm
Hard driveidentical
Storage drive type	ATA-100 (Enhanced IDE)	ATA-100 (Enhanced IDE)
Other features2 differ
Security featuresDiffers	-IBM Embedded Security Subsystem 2.0 -IBM Security Slot -Hard disk drive password -Integrated fingerprint reader -Power-on password -Supervisor password	•Hard disk drive password •IBM Embedded Security Subsystem 2.0 •IBM Security Slot •Power-on password •Supervisor password
Battery typeDiffers	6 Cell Lithium-Ion	6 cell Li-Ion battery pack
Internal modem	Yes	Yes
Modem speed	56 Kbit/s	56 Kbit/s
Supplied AC adapter type	AC	AC
Optical driveidentical
CD read speedKnown for one	Unknown — not stated by the source	24x
CD write speedKnown for one	Unknown — not stated by the source	24x
CD rewrite speedKnown for one	Unknown — not stated by the source	24x
DVD read speedKnown for one	Unknown — not stated by the source	8x

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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