Product comparison · 2 laptops

Lenovo ThinkPad R61i Intel® Core™2 Duo T5450 Laptop vs Lenovo ThinkPad T23

44specifications compared
21differ
23identical
72known for one product only

Key differences

Display diagonal
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:39.1 cm (15.4")
- ThinkPad T23:35.8 cm (14.1")
Display resolution
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:1280 x 800 pixels
- ThinkPad T23:1024 x 768 pixels
Native aspect ratio
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:16:10
- ThinkPad T23:4:3
Processor family
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:Intel® Core™2 Duo
- ThinkPad T23:Intel® Pentium®
Processor frequency
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:1.66 GHz
- ThinkPad T23:1 GHz
Processor cache
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:2 MB
- ThinkPad T23:0.512 MB
Internal memory
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:1 GB
- ThinkPad T23:0.125 GB
Total storage capacity
- ThinkPad R61i Intel® Core™2 Duo T5450 Laptop:160 GB
- ThinkPad T23:20 GB

Side by side

Differences highlightedShow differences only

Comparison of R61i, ThinkPad T23
116 specifications	A Lenovo ThinkPad R61i Intel® Core™2 Duo T5450 Laptop Model R61i View product	B Lenovo ThinkPad T23 View product
Designidentical
Product typeKnown for one	Laptop	Unknown — not stated by the source
Display3 differ
Display diagonalDiffers	39.1 cm (15.4")	35.8 cm (14.1")
Display resolutionDiffers	1280 x 800 pixels	1024 x 768 pixels
Native aspect ratioDiffers	16:10	4:3
Processor3 differ
Processor familyDiffers	Intel® Core™2 Duo	Intel® Pentium®
Processor modelKnown for one	T5450	Unknown — not stated by the source
Processor coresKnown for one	2	Unknown — not stated by the source
Processor threadsKnown for one	2	Unknown — not stated by the source
Processor frequencyDiffers	1.66 GHz	1 GHz
Processor cacheDiffers	2 MB	0.512 MB
Processor front side busKnown for one	667 MHz	Unknown — not stated by the source
Processor socketKnown for one	Socket 479	Unknown — not stated by the source
Processor lithographyKnown for one	65 nm	Unknown — not stated by the source
Processor operating modesKnown for one	64-bit	Unknown — not stated by the source
Processor seriesKnown for one	Intel Core 2 Duo T5000 Series	Unknown — not stated by the source
Processor codenameKnown for one	Merom	Unknown — not stated by the source
Bus typeKnown for one	FSB	Unknown — not stated by the source
FSB ParityKnown for one	No	Unknown — not stated by the source
SteppingKnown for one	M0	Unknown — not stated by the source
Thermal Design Power (TDP)Known for one	35 W	Unknown — not stated by the source
TjunctionKnown for one	100 °C	Unknown — not stated by the source
Processor core voltage (AC)Known for one	1.075 - 1.175 V	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	291 M	Unknown — not stated by the source
Processing Die sizeKnown for one	143 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	10	Unknown — not stated by the source
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	1 GB	0.125 GB
Internal memory typeKnown for one	DDR2-SDRAM	Unknown — not stated by the source
Memory slotsKnown for one	2x SO-DIMM	Unknown — not stated by the source
Maximum internal memoryKnown for one	4 GB	Unknown — not stated by the source
Storage2 differ
Total storage capacityDiffers	160 GB	20 GB
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
Optical drive typeDiffers	DVD±RW	DVD-ROM
Graphicsidentical
Discrete graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card modelKnown for one	Intel® GMA X3100	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	High Definition Audio	Sound Blaster
Number of built-in speakersKnown for one	2	Unknown — not stated by the source
Speaker powerKnown for one	2 W	Unknown — not stated by the source
Network2 differ
Networking featuresDiffers	Gigabit Ethernet	Ethernet/Fast Ethernet
Wireless technologyDiffers	IEEE 802.11a/b/g	IEEE 802.11b
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	3	2
Firewire (IEEE 1394) portsDiffers	1	0
CardBus PCMCIA slot typeDiffers	Type II	Type III
PS/2 ports quantityDiffers	0	1
Parallel ports quantityDiffers	0	1
Serial ports quantityDiffers	0	1
Keyboard1 differ
Pointing deviceDiffers	ThinkPad UltraNav	Trackpad
Software1 differ
Operating system installedDiffers	Windows XP Professional	Windows 2000 Professional
Processor special featuresidentical
Intel® Wireless Display (Intel® WiDi)Known for one	No	Unknown — not stated by the source
Embedded options availableKnown for one	No	Unknown — not stated by the source
Enhanced Intel SpeedStep TechnologyKnown for one	Yes	Unknown — not stated by the source
Execute Disable BitKnown for one	Yes	Unknown — not stated by the source
Intel 64Known for one	Yes	Unknown — not stated by the source
Intel Clear Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel Demand Based SwitchingKnown for one	No	Unknown — not stated by the source
Intel Dual Display Capable TechnologyKnown for one	No	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	No	Unknown — not stated by the source
Intel FDI TechnologyKnown for one	No	Unknown — not stated by the source
Intel Fast Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Flex Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
Intel Trusted Execution TechnologyKnown for one	No	Unknown — not stated by the source
Intel VT-x with Extended Page Tables (EPT)Known for one	No	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)Known for one	No	Unknown — not stated by the source
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	No	Unknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)Known for one	No	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for one	No	Unknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	No	Unknown — not stated by the source
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	No	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	No	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Insider™Known for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Known for one	No	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Turbo Boost TechnologyKnown for one	No	Unknown — not stated by the source
Processor ARK IDKnown for one	30787	Unknown — not stated by the source
Processor package sizeKnown for one	35 x 35 mm	Unknown — not stated by the source
Thermal Monitoring TechnologiesKnown for one	No	Unknown — not stated by the source
Conflict-Free processorKnown for one	No	Unknown — not stated by the source
Batteryidentical
Number of battery cellsKnown for one	6	Unknown — not stated by the source
Battery life (max)Known for one	5 h	Unknown — not stated by the source
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
Fingerprint readerKnown for one	Yes	Unknown — not stated by the source
HDD user passwordKnown for one	Yes	Unknown — not stated by the source
Weight & dimensionsidentical
WeightKnown for one	2.75 kg	Unknown — not stated by the source
WidthKnown for one	358 mm	Unknown — not stated by the source
DepthKnown for one	260 mm	Unknown — not stated by the source
HeightKnown for one	35 mm	Unknown — not stated by the source
Dimensions (WxDxH)Known for one	358 x 260 x 35 mm	Unknown — not stated by the source
Other features1 differ
Infrared data portDiffers	No	Yes
Modem typeKnown for one	Unknown — not stated by the source	V.90

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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