Product comparison · 2 laptops

ASUS X51RL-AP004D Intel® Celeron® M vs Lenovo ThinkPad T61, SP

59specifications compared
24differ
35identical
68known for one product only

Key differences

Display diagonal
- X51RL-AP004D Intel® Celeron® M:39.1 cm (15.4")
- ThinkPad T61, SP:35.8 cm (14.1")
Display resolution
- X51RL-AP004D Intel® Celeron® M:1280 x 800 pixels
- ThinkPad T61, SP:1440 x 900 pixels
Processor family
- X51RL-AP004D Intel® Celeron® M:Intel® Celeron® M
- ThinkPad T61, SP:Intel® Core™2 Duo
Processor frequency
- X51RL-AP004D Intel® Celeron® M:1.86 GHz
- ThinkPad T61, SP:2.2 GHz
Processor cache
- X51RL-AP004D Intel® Celeron® M:1 MB
- ThinkPad T61, SP:4 MB
Processor front side bus
- X51RL-AP004D Intel® Celeron® M:533 MHz
- ThinkPad T61, SP:800 MHz
Internal memory
- X51RL-AP004D Intel® Celeron® M:1 GB
- ThinkPad T61, SP:2 GB
Maximum internal memory
- X51RL-AP004D Intel® Celeron® M:2 GB
- ThinkPad T61, SP:4 GB

Side by side

Differences highlightedShow differences only

Comparison of X51RL-AP004D, ThinkPad T61, SP
127 specifications	A ASUS X51RL-AP004D Intel® Celeron® M Model X51RL-AP004D View product	B Lenovo ThinkPad T61, SP View product
Display2 differ
Display diagonalDiffers	39.1 cm (15.4")	35.8 cm (14.1")
Display resolutionDiffers	1280 x 800 pixels	1440 x 900 pixels
Native aspect ratio	16:10	16:10
Processor4 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron® M	Intel® Core™2 Duo
Processor modelKnown for one	Unknown — not stated by the source	T7500
Processor coresKnown for one	Unknown — not stated by the source	2
Processor threadsKnown for one	Unknown — not stated by the source	2
Processor frequencyDiffers	1.86 GHz	2.2 GHz
Processor cacheDiffers	1 MB	4 MB
Processor cache type	L2	L2
Processor front side busDiffers	533 MHz	800 MHz
Processor socketKnown for one	Unknown — not stated by the source	Socket 478
Processor lithographyKnown for one	Unknown — not stated by the source	65 nm
Processor operating modesKnown for one	Unknown — not stated by the source	64-bit
Processor seriesKnown for one	Unknown — not stated by the source	Intel Core 2 Duo T7000 Series
Processor codenameKnown for one	Unknown — not stated by the source	Merom
Bus typeKnown for one	Unknown — not stated by the source	FSB
FSB ParityKnown for one	Unknown — not stated by the source	No
SteppingKnown for one	Unknown — not stated by the source	E1
Thermal Design Power (TDP)Known for one	Unknown — not stated by the source	35 W
TjunctionKnown for one	Unknown — not stated by the source	100 °C
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	291 M
Processing Die sizeKnown for one	Unknown — not stated by the source	143 mm²
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	11
ECC supported by processorKnown for one	Unknown — not stated by the source	No
Memory2 differ
Internal memoryDiffers	1 GB	2 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory slotsKnown for one	Unknown — not stated by the source	2x SO-DIMM
Maximum internal memoryDiffers	2 GB	4 GB
Memory clock speedKnown for one	667 MHz	Unknown — not stated by the source
Memory layout (slots x size)Known for one	1 x 1 GB	Unknown — not stated by the source
Storage1 differ
Total storage capacityDiffers	120 GB	160 GB
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Optical drive typeKnown for one	DVD Super Multi	Unknown — not stated by the source
Card reader integratedKnown for one	Yes	Unknown — not stated by the source
Compatible memory cardsKnown for one	MMC, MS Pro, SD	Unknown — not stated by the source
Graphics1 differ
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	AMD Radeon Xpress 1100	NVIDIA Quadro NVS 140M
Maximum graphics card memoryKnown for one	Unknown — not stated by the source	0.128 GB
Audio1 differ
Audio systemDiffers	Intel HDA (Azalia)	High Definition Audio
Number of built-in speakers	2	2
Speaker powerKnown for one	Unknown — not stated by the source	2 W
Cameraidentical
Front camera	No	No
Network2 differ
Networking featuresDiffers	Fast Ethernet, WLAN	Gigabit Ethernet
Wireless technologyDiffers	IEEE 802.11b/g	IEEE 802.11a/g/n
Bluetooth	No	No
Ports & interfaces4 differ
USB 2.0 ports quantityDiffers	4	3
Ethernet LAN (RJ-45) ports	1	1
DVI port	No	No
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 connectorDiffers	No	Yes
ExpressCard slotDiffers	No	Yes
CardBus PCMCIA slots quantity	1	1
CardBus PCMCIA slot type	Type II	Type II
SmartCard slot	No	No
Modem (RJ-11) ports	1	1
TV-in port	No	No
TV-out	No	No
PS/2 ports quantity	0	0
Parallel ports quantity	0	0
Serial ports quantity	0	0
USB 1.1 ports quantity	0	0
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Software1 differ
Operating system installedDiffers	FreeDOS	Windows Vista Business
Processor special featuresidentical
Intel® Wireless Display (Intel® WiDi)Known for one	Unknown — not stated by the source	No
Embedded options availableKnown for one	Unknown — not stated by the source	Yes
Enhanced Intel SpeedStep TechnologyKnown for one	Unknown — not stated by the source	Yes
Execute Disable BitKnown for one	Unknown — not stated by the source	Yes
Idle StatesKnown for one	Unknown — not stated by the source	Yes
Intel 64Known for one	Unknown — not stated by the source	Yes
Intel Clear Video TechnologyKnown for one	Unknown — not stated by the source	No
Intel Demand Based SwitchingKnown for one	Unknown — not stated by the source	No
Intel Dual Display Capable TechnologyKnown for one	Unknown — not stated by the source	No
Intel Enhanced Halt StateKnown for one	Unknown — not stated by the source	Yes
Intel FDI TechnologyKnown for one	Unknown — not stated by the source	No
Intel Fast Memory AccessKnown for one	Unknown — not stated by the source	No
Intel Flex Memory AccessKnown for one	Unknown — not stated by the source	No
Intel Rapid Storage TechnologyKnown for one	Unknown — not stated by the source	No
Intel Trusted Execution TechnologyKnown for one	Unknown — not stated by the source	No
Intel VT-x with Extended Page Tables (EPT)Known for one	Unknown — not stated by the source	No
Intel Virtualization Technology (VT-x)Known for one	Unknown — not stated by the source	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Unknown — not stated by the source	No
Intel® AES New Instructions (Intel® AES-NI)Known for one	Unknown — not stated by the source	No
Intel® Anti-Theft Technology (Intel® AT)Known for one	Unknown — not stated by the source	No
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	Unknown — not stated by the source	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	Unknown — not stated by the source	No
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Unknown — not stated by the source	No
Intel® InTru™ 3D TechnologyKnown for one	Unknown — not stated by the source	No
Intel® Insider™Known for one	Unknown — not stated by the source	No
Intel® My WiFi Technology (Intel® MWT)Known for one	Unknown — not stated by the source	No
Intel® Quick Sync Video TechnologyKnown for one	Unknown — not stated by the source	No
Intel® Turbo Boost TechnologyKnown for one	Unknown — not stated by the source	No
Processor ARK IDKnown for one	Unknown — not stated by the source	29761
Processor package sizeKnown for one	Unknown — not stated by the source	35 x 35 mm
Thermal Monitoring TechnologiesKnown for one	Unknown — not stated by the source	No
Conflict-Free processorKnown for one	Unknown — not stated by the source	No
Batteryidentical
Number of battery cells	6	6
Battery life (max)Known for one	Unknown — not stated by the source	4 h
Battery capacityKnown for one	4400 mAh	Unknown — not stated by the source
Poweridentical
DC-in jack	Yes	Yes
AC adapter powerKnown for one	65 W	Unknown — not stated by the source
AC adapter output currentKnown for one	3.42 A	Unknown — not stated by the source
AC adapter output voltageKnown for one	19 V	Unknown — not stated by the source
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	Kensington	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
HDD user password	Yes	Yes
Password protection typeKnown for one	BIOS	Unknown — not stated by the source
Weight & dimensions4 differ
WeightDiffers	2.8 kg	2.6 kg
WidthDiffers	365 mm	335.5 mm
DepthDiffers	264 mm	237 mm
HeightDiffers	35.5 mm	28 mm
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	335.5 x 237 x 28 mm
Other featuresidentical
Infrared data port	No	No
Internal modem	Yes	Yes
Modem speed	56 Kbit/s	56 Kbit/s
Modem type	V.92	V.92
Supplied AC adapter type	AC	AC
Power requirementsKnown for one	100 / 240 V	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	ATI Radeon Xpress 1100	Unknown — not stated by the source
Packaging contentidentical
AC adapter includedKnown for one	Yes	Unknown — not stated by the source

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