Product comparison · 2 laptops

ASUS X51R-AG015A laptop Intel® Celeron® M 520 vs Lenovo ThinkPad 400 Intel® Core™2 Duo P8400

84specifications compared
45differ
39identical
56known for one product only

Key differences

Display diagonal
- X51R-AG015A laptop Intel® Celeron® M 520:39.1 cm (15.4")
- ThinkPad 400 Intel® Core™2 Duo P8400:35.8 cm (14.1")
Processor family
- X51R-AG015A laptop Intel® Celeron® M 520:Intel® Celeron® M
- ThinkPad 400 Intel® Core™2 Duo P8400:Intel® Core™2 Duo
Processor model
- X51R-AG015A laptop Intel® Celeron® M 520:520
- ThinkPad 400 Intel® Core™2 Duo P8400:P8400
Processor cores
- X51R-AG015A laptop Intel® Celeron® M 520:1
- ThinkPad 400 Intel® Core™2 Duo P8400:2
Processor frequency
- X51R-AG015A laptop Intel® Celeron® M 520:2.8 GHz
- ThinkPad 400 Intel® Core™2 Duo P8400:2.26 GHz
Processor cache
- X51R-AG015A laptop Intel® Celeron® M 520:1 MB
- ThinkPad 400 Intel® Core™2 Duo P8400:3 MB
Processor front side bus
- X51R-AG015A laptop Intel® Celeron® M 520:800 MHz
- ThinkPad 400 Intel® Core™2 Duo P8400:1066 MHz
Processor socket
- X51R-AG015A laptop Intel® Celeron® M 520:LGA 775 (Socket T)
- ThinkPad 400 Intel® Core™2 Duo P8400:Socket 478

Side by side

Differences highlightedShow differences only

Comparison of X51R-AG015A, 400
140 specifications	A ASUS X51R-AG015A laptop Intel® Celeron® M 520 Model X51R-AG015A View product	B Lenovo ThinkPad 400 Intel® Core™2 Duo P8400 Model 400 View product
Display1 differ
Display diagonalDiffers	39.1 cm (15.4")	35.8 cm (14.1")
Display resolution	1280 x 800 pixels	1280 x 800 pixels
Native aspect ratio	16:10	16:10
Processor15 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron® M	Intel® Core™2 Duo
Processor modelDiffers	520	P8400
Processor coresDiffers	1	2
Processor threads	2	2
Processor frequencyDiffers	2.8 GHz	2.26 GHz
Processor cacheDiffers	1 MB	3 MB
Processor cache type	L2	L2
Processor front side busDiffers	800 MHz	1066 MHz
Processor socketDiffers	LGA 775 (Socket T)	Socket 478
Processor lithographyDiffers	90 nm	45 nm
Processor operating modesDiffers	32-bit	64-bit
Processor seriesKnown for one	Unknown — not stated by the source	Intel Core 2 Duo P8000 Series
Processor codenameDiffers	Prescott	Penryn
Bus type	FSB	FSB
FSB Parity	No	No
SteppingKnown for one	Unknown — not stated by the source	M0
Thermal Design Power (TDP)Differs	84 W	25 W
TjunctionDiffers	100 °C	105 °C
Number of Processing Die TransistorsDiffers	125 M	410 M
Processing Die sizeDiffers	112 mm²	107 mm²
CPU multiplier (bus/core ratio)Differs	12	8.5
ECC supported by processorKnown for one	Unknown — not stated by the source	No
TcaseKnown for one	67.7 °C	Unknown — not stated by the source
Processor core voltage (AC)Known for one	0.95 - 1.30 V	Unknown — not stated by the source
Memory3 differ
Internal memory	1 GB	1 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR3-SDRAM
Memory clock speedDiffers	667 MHz	1066 MHz
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memoryDiffers	2 GB	4 GB
Storage2 differ
Total storage capacity	80 GB	80 GB
Number of HDDs installed	1	1
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Optical drive typeDiffers	DVD Super Multi	DVD-ROM
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MS PRO, SD	Memory Stick (MS), MMC, MS PRO, SD, SDHC
Graphics2 differ
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	Intel GMA X300	Intel® GMA 4500MHD
Graphics card familyDiffers	AMD	Intel
Audio1 differ
Audio systemDiffers	Azalia	HD
Number of built-in speakersKnown for one	Unknown — not stated by the source	2
Speaker powerKnown for one	1.5 W	Unknown — not stated by the source
Audio system full duplexKnown for one	Yes	Unknown — not stated by the source
Audio system direct 3D soundKnown for one	Yes	Unknown — not stated by the source
Cameraidentical
Front camera	No	No
Network1 differ
Wi-Fi	Yes	Yes
Ethernet LANKnown for one	Unknown — not stated by the source	Yes
BluetoothDiffers	No	Yes
Networking featuresKnown for one	Fast Ethernet, WLAN	Unknown — not stated by the source
Wireless technologyKnown for one	Wi-Fi	Unknown — not stated by the source
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	4	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0	0
eSATA ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	0	0
DisplayPorts quantity	0	0
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 quantityDiffers	1	0
CardBus PCMCIA slot typeDiffers	Type II	No
SmartCard slot	No	No
Modem (RJ-11) ports	1	1
TV-out	No	No
TV-in portKnown for one	No	Unknown — not stated by the source
PS/2 ports quantityKnown for one	0	Unknown — not stated by the source
Parallel ports quantityKnown for one	0	Unknown — not stated by the source
Serial ports quantityKnown for one	0	Unknown — not stated by the source
Software1 differ
Operating system installedDiffers	Windows Vista Home Basic	Windows Vista Business
Operating system architectureKnown for one	Unknown — not stated by the source	32-bit
Trial softwareKnown for one	Symantec Norton Internet Security 2006	Unknown — not stated by the source
Processor special features10 differ
Intel® Wireless Display (Intel® WiDi)Known for one	Unknown — not stated by the source	No
Embedded options availableDiffers	No	Yes
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Execute Disable Bit	Yes	Yes
Idle StatesDiffers	No	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyKnown for one	Unknown — not stated by the source	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable TechnologyKnown for one	Unknown — not stated by the source	No
Intel Enhanced Halt StateDiffers	No	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 TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Known for one	Unknown — not stated by the source	No
Intel Virtualization Technology (VT-x)Differs	No	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)Differs	Yes	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 Technology	No	No
Processor ARK IDDiffers	27460	35569
Processor codeKnown for one	Unknown — not stated by the source	SL3BU
Processor package sizeDiffers	37.5 mm	35 x 35 mm
Thermal Monitoring TechnologiesDiffers	Yes	No
Conflict-Free processor	No	No
Batteryidentical
Number of battery cellsKnown for one	Unknown — not stated by the source	6
Poweridentical
DC-in jack	Yes	Yes
AC adapter powerKnown for one	65 W	Unknown — not stated by the source
AC adapter input voltageKnown for one	100 - 240 V	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
Security2 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	Kensington	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Password protection typeDiffers	BIOS	HDD
HDD user passwordKnown for one	Yes	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	2.8 kg	2.38 kg
WidthKnown for one	Unknown — not stated by the source	335.5 mm
DepthKnown for one	Unknown — not stated by the source	238 mm
HeightKnown for one	Unknown — not stated by the source	32 mm
Dimensions (WxDxH)Known for one	365 x 264 x 35.5 mm	Unknown — not stated by the source
Packaging contentidentical
AC adapter included	Yes	Yes
Other featuresidentical
Infrared data port	No	No
Intel segment taggingKnown for one	Unknown — not stated by the source	Home office, Small Business
Internal modemKnown for one	Yes	Unknown — not stated by the source
TV tuner integratedKnown for one	No	Unknown — not stated by the source
Modem speedKnown for one	56 Kbit/s	Unknown — not stated by the source
Supplied AC adapter typeKnown for one	AC	Unknown — not stated by the source
Designidentical
Product colourKnown for one	Silver	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	ATI Radeon Xpress 1100	Unknown — not stated by the source
Keyboardidentical
Pointing deviceKnown for one	Touchpad	Unknown — not stated by the source
Keyboard number of keysKnown for one	88	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.

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