Product comparison · 2 laptops

Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP vs Lenovo THINKPAD R52 PMC740-1.7G

31specifications compared
10differ
21identical
6known for one product only

Key differences

The Lenovo THINKPAD R52 PMC740-1.7G 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 THINKPAD R52 PMC740-1.7G has 133 MHz more processor front side bus than the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP (533 MHz vs 400 MHz). The Lenovo THINKPAD R52 PMC740-1.7G has 0.25 GB more internal memory than the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP (0.5 GB vs 0.25 GB). Discrete graphics card model: AMD Mobility Radeon 9000 IGP on the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP, Intel® GMA 900 on the Lenovo THINKPAD R52 PMC740-1.7G. Graphics card interface: AGP 4X on the Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP, PCI Express on the Lenovo THINKPAD R52 PMC740-1.7G.

Processor frequency
- ThinkPad R51 PM725 1600 256MB 40GB WXP:1.6 GHz
- THINKPAD R52 PMC740-1.7G:1.7 GHz
Processor front side bus
- ThinkPad R51 PM725 1600 256MB 40GB WXP:400 MHz
- THINKPAD R52 PMC740-1.7G:533 MHz
Internal memory
- ThinkPad R51 PM725 1600 256MB 40GB WXP:0.25 GB
- THINKPAD R52 PMC740-1.7G:0.5 GB
Discrete graphics card model
- ThinkPad R51 PM725 1600 256MB 40GB WXP:AMD Mobility Radeon 9000 IGP
- THINKPAD R52 PMC740-1.7G:Intel® GMA 900
Graphics card interface
- ThinkPad R51 PM725 1600 256MB 40GB WXP:AGP 4X
- THINKPAD R52 PMC740-1.7G:PCI Express
Battery life (max)
- ThinkPad R51 PM725 1600 256MB 40GB WXP:4 h
- THINKPAD R52 PMC740-1.7G:3.7 h
Weight
- ThinkPad R51 PM725 1600 256MB 40GB WXP:2.6 kg
- THINKPAD R52 PMC740-1.7G:3.01 kg
Dimensions (WxDxH)
- ThinkPad R51 PM725 1600 256MB 40GB WXP:314 x 260 x 37 mm
- THINKPAD R52 PMC740-1.7G:332 x 269 x 38 mm

Side by side

Differences highlightedShow differences only

Comparison of ThinkPad R51 PM725 1600 256MB 40GB WXP, THINKPAD R52 PMC740-1.7G
37 specifications	A Lenovo ThinkPad R51 PM725 1600 256MB 40GB WXP View product	B Lenovo THINKPAD R52 PMC740-1.7G View product
Processor2 differ
Processor frequencyDiffers	1.6 GHz	1.7 GHz
Processor front side busDiffers	400 MHz	533 MHz
Memory1 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Internal memory typeKnown for one	Unknown — not stated by the source	DDR2-SDRAM
Storageidentical
HDD speedKnown for one	Unknown — not stated by the source	5400 RPM
Graphics2 differ
Discrete graphics card modelDiffers	AMD Mobility Radeon 9000 IGP	Intel® GMA 900
Maximum graphics card memoryKnown for one	0.032 GB	Unknown — not stated by the source
Graphics card interfaceDiffers	AGP 4X	PCI Express
Network1 differ
Networking featuresDiffers	Ethernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g/Bluetooth	Ethernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g
Ports & interfaces1 differ
I/O portsDiffers	-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)	-AC adapter -Docking/Port Replicator -External Display -Headphone/Line out -RJ-11 -Parallel -Infrared -Microphone/line in -RJ-45 -S-Video out -2 USB 2.0
Softwareidentical
Bundled softwareKnown for one	Unknown — not stated by the source	Access 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
Battery life (max)Differs	4 h	3.7 h
Weight & dimensions2 differ
WeightDiffers	2.6 kg	3.01 kg
WidthKnown for one	314 mm	Unknown — not stated by the source
DepthKnown for one	260 mm	Unknown — not stated by the source
Dimensions (WxDxH)Differs	314 x 260 x 37 mm	332 x 269 x 38 mm

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.

More laptop comparisons

All laptop comparisons