Product comparison · 2 laptops

Acer eMachines E520-572G12Mi vs Lenovo ThinkPad T400-NM7P6IX

102specifications compared
38differ
64identical
29known for one product only

Key differences

Display diagonal
- eMachines E520-572G12Mi:39.1 cm (15.4")
- ThinkPad T400-NM7P6IX:35.8 cm (14.1")
Display resolution
- eMachines E520-572G12Mi:1280 x 800 pixels
- ThinkPad T400-NM7P6IX:1440 x 900 pixels
Processor family
- eMachines E520-572G12Mi:Intel® Celeron® M
- ThinkPad T400-NM7P6IX:Intel® Core™2 Duo
Processor model
- eMachines E520-572G12Mi:575
- ThinkPad T400-NM7P6IX:P8400
Processor cores
- eMachines E520-572G12Mi:1
- ThinkPad T400-NM7P6IX:2
Processor threads
- eMachines E520-572G12Mi:1
- ThinkPad T400-NM7P6IX:2
Processor frequency
- eMachines E520-572G12Mi:2 GHz
- ThinkPad T400-NM7P6IX:2.26 GHz
Processor cache
- eMachines E520-572G12Mi:1 MB
- ThinkPad T400-NM7P6IX:3 MB

Side by side

Differences highlightedShow differences only

Comparison of eMachines E520-572G12Mi, ThinkPad T400-NM7P6IX
131 specifications	A Acer eMachines E520-572G12Mi View product	B Lenovo ThinkPad T400-NM7P6IX 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
Display number of coloursKnown for one	Unknown — not stated by the source	16.78 million colours
Native aspect ratio	16:10	16:10
Processor14 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Celeron® M	Intel® Core™2 Duo
Processor modelDiffers	575	P8400
Processor coresDiffers	1	2
Processor threadsDiffers	1	2
Processor frequencyDiffers	2 GHz	2.26 GHz
Processor cacheDiffers	1 MB	3 MB
Processor cache type	L2	L2
Processor front side busDiffers	667 MHz	1066 MHz
Processor socket	Socket 478	Socket 478
Processor lithographyDiffers	65 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Celeron Processor 500 Series for Mobile	Intel Core 2 Duo P8000 Series
Processor codenameDiffers	Merom	Penryn
Bus type	FSB	FSB
FSB Parity	No	No
Stepping	M0	M0
Thermal Design Power (TDP)Differs	31 W	25 W
TjunctionKnown for one	Unknown — not stated by the source	105 °C
Number of Processing Die TransistorsDiffers	291 M	410 M
Processing Die sizeDiffers	143 mm²	107 mm²
CPU multiplier (bus/core ratio)Differs	12	8.5
ECC supported by processor	No	No
TcaseKnown for one	100 °C	Unknown — not stated by the source
Memory2 differ
Internal memory	2 GB	2 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR3-SDRAM
Memory clock speedKnown for one	Unknown — not stated by the source	1066 MHz
Memory layout (slots x size)Known for one	Unknown — not stated by the source	2 x 2 GB
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memoryDiffers	2 GB	4 GB
Storage1 differ
Total storage capacityDiffers	120 GB	250 GB
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Optical drive typeKnown for one	Unknown — not stated by the source	DVD Super Multi DL
Card reader integrated	No	No
Graphics1 differ
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	Intel® GMA X3100	Intel® GMA X4500HD
Maximum graphics card memoryKnown for one	0.128 GB	Unknown — not stated by the source
Audioidentical
Audio system	High Definition Audio	High Definition Audio
Number of built-in speakers	2	2
Speaker powerKnown for one	Unknown — not stated by the source	2 W
Network3 differ
Networking featuresDiffers	Ethernet/Fast Ethernet	Gigabit Ethernet, WLAN
Wireless technologyDiffers	IEEE 802.11b/g	Intel WiFi Link 5300AGN
BluetoothDiffers	No	Yes
Ports & interfaces3 differ
USB 2.0 ports quantity	3	3
Ethernet LAN (RJ-45) ports	1	1
HDMI ports 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 slot	No	No
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	No	No
Modem (RJ-11) portsDiffers	0	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
Keyboardidentical
Pointing deviceKnown for one	Unknown — not stated by the source	ThinkPad UltraNav
Software1 differ
Operating system installedDiffers	Windows Vista Home Basic	Windows Vista Business
Processor special features7 differ
Intel® Wireless Display (Intel® WiDi)	No	No
Embedded options available	Yes	Yes
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Execute Disable Bit	Yes	Yes
Idle StatesDiffers	No	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt StateDiffers	No	Yes
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)Differs	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® Turbo Boost Technology	No	No
Processor ARK IDDiffers	36680	35569
Processor codeDiffers	SLB6M	SL3BU
Processor package size	35 x 35 mm	35 x 35 mm
Thermal Monitoring Technologies	No	No
Conflict-Free processor	No	No
Batteryidentical
Number of battery cells	6	6
Battery life (max)Known for one	Unknown — not stated by the source	6.3 h
Poweridentical
AC adapter powerKnown for one	Unknown — not stated by the source	65 W
AC adapter input voltageKnown for one	Unknown — not stated by the source	100 - 240 V
DC-in jack	Yes	Yes
Securityidentical
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Cable lock slot typeKnown for one	Unknown — not stated by the source	Kensington
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Password protection typeKnown for one	Unknown — not stated by the source	BIOS
HDD user passwordKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions3 differ
WeightDiffers	2.8 kg	2.38 kg
WidthDiffers	366 mm	335 mm
DepthDiffers	274 mm	238 mm
HeightKnown for one	Unknown — not stated by the source	31.9 mm
Height (front)Known for one	3.36 cm	Unknown — not stated by the source
Height (rear)Known for one	4.26 cm	Unknown — not stated by the source
Packaging contentidentical
AC adapter includedKnown for one	Unknown — not stated by the source	Yes
Other features1 differ
Infrared data port	No	No
Compliance industry standardsKnown for one	Unknown — not stated by the source	Intel WiFi Link 5300AGN
Internal modemDiffers	No	Yes
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Modem typeKnown for one	Unknown — not stated by the source	V90 & K56
Intel segment taggingKnown for one	Unknown — not stated by the source	Home office, Small Business
Supplied AC adapter type	AC	AC
Wake-on-LAN readyKnown for one	Yes	Unknown — not stated by the source
Wake-on-Ring readyKnown for one	Yes	Unknown — not stated by the source
Cameraidentical
Front camera resolution (numeric)Known for one	0.3 MP	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Intel GL960 Express	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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