Product comparison · 2 laptops

Lenovo Thinkpad R50e vs Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US

53specifications compared
22differ
31identical
15known for one product only

Key differences

The Lenovo Thinkpad R50e has 0.25 GB more internal memory than the Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US (0.5 GB vs 0.25 GB). The Lenovo Thinkpad R50e has 0.032 GB more maximum graphics card memory than the Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US (0.064 GB vs 0.032 GB). The Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US has 1 more built-in speakers than the Lenovo Thinkpad R50e (2 vs 1). Only the Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US has DVI port. Only the Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US has TV-in port.

Display diagonal
- Thinkpad R50e:38.1 cm (15")
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:35.8 cm (14.1")
Internal memory
- Thinkpad R50e:0.5 GB
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:0.25 GB
Internal memory type
- Thinkpad R50e:DDR2-SDRAM
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:DDR-SDRAM
Maximum graphics card memory
- Thinkpad R50e:0.064 GB
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:0.032 GB
Graphics card interface
- Thinkpad R50e:Direct AGP
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:AGP 4X
Number of built-in speakers
- Thinkpad R50e:1
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:2
CD rewrite speed
- Thinkpad R50e:10x
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:24x
USB 2.0 ports quantity
- Thinkpad R50e:2
- THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US:1

Side by side

Differences highlightedShow differences only

Comparison of Thinkpad R50e, THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US
68 specifications	A Lenovo Thinkpad R50e View product	B Lenovo THINKPAD R51 P M-1.7(735) CENT. 256/40G/14/DVD/CDRW/WXP US View product
Display1 differ
Display diagonalDiffers	38.1 cm (15")	35.8 cm (14.1")
Display resolution	1024 x 768 pixels	1024 x 768 pixels
Native aspect ratio	4:3	4:3
Processoridentical
Processor manufacturer	Intel	Intel
Processor frequency	1.7 GHz	1.7 GHz
Processor front side bus	400 MHz	400 MHz
Memory2 differ
Internal memoryDiffers	0.5 GB	0.25 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR-SDRAM
Storageidentical
Total storage capacity	40 GB	40 GB
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
Graphics2 differ
Maximum graphics card memoryDiffers	0.064 GB	0.032 GB
Maximum resolution	2048 x 1536 pixels	2048 x 1536 pixels
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
Audio1 differ
Audio system	SoundMAX	SoundMAX
Number of built-in speakersDiffers	1	2
Cameraidentical
Front cameraKnown for one	No	Unknown — not stated by the source
Optical drive1 differ
CD read speed	24x	24x
CD write speed	24x	24x
CD rewrite speedDiffers	10x	24x
DVD read speed	8x	8x
Network1 differ
Networking featuresDiffers	Ethernet/Fast Ethernet/IEEE 802.11b/IEEE 802.11g	Ethernet/Fast Ethernet/Gigabit Ethernet/IEEE 802.11b/IEEE 802.11g
Ports & interfaces8 differ
USB 2.0 ports quantityDiffers	2	1
Ethernet LAN (RJ-45) ports	1	1
DVI portDiffers	No	Yes
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) portsDiffers	0	1
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connector	No	No
CardBus PCMCIA slots quantityDiffers	0	1
CardBus PCMCIA slot typeDiffers	No	Type II
SmartCard slot	No	No
Modem (RJ-11) ports	1	1
TV-in portDiffers	No	Yes
TV-outDiffers	No	Yes
PS/2 ports quantity	0	0
Parallel ports quantityDiffers	0	1
Serial ports quantity	0	0
USB 1.1 ports quantity	0	0
TV-out typeKnown for one	Unknown — not stated by the source	S-Video
I/O portsKnown for one	Unknown — not stated by the source	1x Expansion Bus port (for Dock II/Mini Dock or Port Replicator II)
Keyboard1 differ
Pointing deviceDiffers	Trackpad	ThinkPad UltraNav
Keyboard type	Full size	Full size
Software1 differ
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled softwareDiffers	Access Connections; Access Program; Rescue and Recovery, Norton AntiVirus 2004 with 90 days of virus definition upgrades, PC Doctor diagnostics, Adobe Acrobat Reader	Access Program, Drive Letter Access, Record Now, ThinkVantage Access Connections, ThinkVantage Rescue and Recovery with Rapid Restore, ThinkPad Configuration Utility, Norton AntiVirus 2004, PC Doctor diagnostics, Adobe Acrobat Reader
Batteryidentical
Number of battery cellsKnown for one	6	Unknown — not stated by the source
Battery life (max)	4 h	4 h
Poweridentical
DC-in jack	Yes	Yes
Securityidentical
Cable lock slotKnown for one	Yes	Unknown — not stated by the source
Cable lock slot typeKnown for one	IBM	Unknown — not stated by the source
Weight & dimensions2 differ
WeightDiffers	2.8 kg	2.7 kg
WidthKnown for one	332 mm	Unknown — not stated by the source
DepthKnown for one	269 mm	Unknown — not stated by the source
HeightKnown for one	38 mm	Unknown — not stated by the source
Dimensions (WxDxH)Differs	332 x 269 x 38 mm	314 x 260 x 34 mm
Other features2 differ
Infrared data portDiffers	No	Yes
Wake-on-LAN ready	No	No
Wake-on-Ring ready	No	No
Internal modem	Yes	Yes
Modem speed	56 Kbit/s	56 Kbit/s
Modem typeDiffers	56K V.92	56K V.90
Supplied AC adapter type	AC	AC
Security featuresKnown for one	Unknown — not stated by the source	-Hard disk drive password -Power-on password -Security Slot -Supervisor password
Battery typeKnown for one	Unknown — not stated by the source	6 Cell
Hard driveidentical
Storage drive typeKnown for one	Unknown — not stated by the source	ATA-100 (Enhanced IDE)

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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