Product comparison · 2 laptops

Acer Aspire One 721-142ki AMD Athlon II Neo K145 Netbook vs Lenovo ThinkPad T520

8specifications compared
6differ
2identical
63known for one product only

Key differences

Display diagonal
- Aspire One 721-142ki AMD Athlon II Neo K145 Netbook:29.5 cm (11.6")
- ThinkPad T520:39.6 cm (15.6")
Processor cache
- Aspire One 721-142ki AMD Athlon II Neo K145 Netbook:1 MB
- ThinkPad T520:3 MB
Memory clock speed
- Aspire One 721-142ki AMD Athlon II Neo K145 Netbook:1066 MHz
- ThinkPad T520:1333 MHz
Weight
- Aspire One 721-142ki AMD Athlon II Neo K145 Netbook:1.4 kg
- ThinkPad T520:2.91 kg
Depth
- Aspire One 721-142ki AMD Athlon II Neo K145 Netbook:204 mm
- ThinkPad T520:245.1 mm
Height
- Aspire One 721-142ki AMD Athlon II Neo K145 Netbook:28 mm
- ThinkPad T520:35.6 mm

Side by side

Differences highlightedShow differences only

Comparison of 721-142ki, ThinkPad T520
71 specifications	A Acer Aspire One 721-142ki AMD Athlon II Neo K145 Netbook Model 721-142ki View product	B Lenovo ThinkPad T520 View product
Designidentical
Product typeKnown for one	Netbook	Unknown — not stated by the source
Product colourKnown for one	Black	Unknown — not stated by the source
Display1 differ
Display diagonalDiffers	29.5 cm (11.6")	39.6 cm (15.6")
LED backlightKnown for one	Yes	Unknown — not stated by the source
Native aspect ratioKnown for one	16:9	Unknown — not stated by the source
Processor1 differ
Processor manufacturerKnown for one	AMD	Unknown — not stated by the source
Processor familyKnown for one	AMD Athlon II Neo	Unknown — not stated by the source
Processor modelKnown for one	K145	Unknown — not stated by the source
Processor frequencyKnown for one	1.8 GHz	Unknown — not stated by the source
Processor cacheDiffers	1 MB	3 MB
Processor cache typeKnown for one	L2	Unknown — not stated by the source
Processor front side busKnown for one	Unknown — not stated by the source	1333 MHz
Memory1 differ
Internal memoryKnown for one	4 GB	Unknown — not stated by the source
Internal memory typeKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory clock speedDiffers	1066 MHz	1333 MHz
Storageidentical
Total storage capacityKnown for one	500 GB	Unknown — not stated by the source
Storage mediaKnown for one	HDD	Unknown — not stated by the source
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Optical drive typeKnown for one	No	Unknown — not stated by the source
Card reader integratedKnown for one	Yes	Unknown — not stated by the source
Compatible memory cardsKnown for one	Memory Stick (MS), MMC, MS PRO, SD, xD	Unknown — not stated by the source
HDD capacityKnown for one	Unknown — not stated by the source	320 GB
Graphicsidentical
Graphics card familyKnown for one	AMD	Unknown — not stated by the source
Maximum graphics card memoryKnown for one	0.384 GB	Unknown — not stated by the source
Graphics cardKnown for one	Radeon HD 4225	Unknown — not stated by the source
Maximum resolutionKnown for one	Unknown — not stated by the source	1366 x 768 pixels
Audioidentical
Audio systemKnown for one	HDA	Unknown — not stated by the source
Built-in microphoneKnown for one	Yes	Unknown — not stated by the source
Speaker powerKnown for one	Unknown — not stated by the source	1 W
Cameraidentical
Front camera resolution (numeric)Known for one	1.3 MP	Unknown — not stated by the source
Networkidentical
Wi-FiKnown for one	Yes	Unknown — not stated by the source
Wireless technologyKnown for one	IEEE 802.11b/g/n	Unknown — not stated by the source
Ethernet LANKnown for one	Yes	Unknown — not stated by the source
Ethernet LAN data ratesKnown for one	10,100 Mbit/s	Unknown — not stated by the source
BluetoothKnown for one	No	Unknown — not stated by the source
Cabling technologyKnown for one	10/100Base-T(X)	Unknown — not stated by the source
Ports & interfacesidentical
USB 2.0 ports quantityKnown for one	3	Unknown — not stated by the source
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
eSATA ports quantityKnown for one	0	Unknown — not stated by the source
Ethernet LAN (RJ-45) portsKnown for one	1	Unknown — not stated by the source
HDMI ports quantityKnown for one	1	Unknown — not stated by the source
VGA (D-Sub) ports quantityKnown for one	1	Unknown — not stated by the source
Firewire (IEEE 1394) portsKnown for one	0	Unknown — not stated by the source
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
Headphone outputsKnown for one	1	Unknown — not stated by the source
TV-outKnown for one	No	Unknown — not stated by the source
Performanceidentical
GPS (satellite)Known for one	No	Unknown — not stated by the source
Keyboardidentical
Pointing deviceKnown for one	Touchpad	Unknown — not stated by the source
Softwareidentical
Operating system installedKnown for one	Windows 7 Home Premium	Unknown — not stated by the source
Operating system architectureKnown for one	64-bit	Unknown — not stated by the source
Batteryidentical
Battery technologyKnown for one	Lithium-Ion (Li-Ion)	Unknown — not stated by the source
Number of battery cellsKnown for one	6	Unknown — not stated by the source
Battery capacityKnown for one	4400 mAh	Unknown — not stated by the source
Battery life (max)Known for one	5.5 h	Unknown — not stated by the source
Poweridentical
AC adapter frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
DC-in jackKnown for one	Yes	Unknown — not stated by the source
AC adapter powerKnown for one	Unknown — not stated by the source	65 W
Securityidentical
Cable lock slotKnown for one	Yes	Unknown — not stated by the source
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Sustainabilityidentical
Sustainability certificatesKnown for one	ENERGY STAR	Unknown — not stated by the source
Weight & dimensions3 differ
WeightDiffers	1.4 kg	2.91 kg
WidthKnown for one	285 mm	Unknown — not stated by the source
DepthDiffers	204 mm	245.1 mm
HeightDiffers	28 mm	35.6 mm
Dimensions (WxDxH)Known for one	285 x 204 x 28 mm	Unknown — not stated by the source
Other featuresidentical
Supplied AC adapter typeKnown for one	AC	Unknown — not stated by the source
Infrared data portKnown for one	Unknown — not stated by the source	No
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s

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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