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Product comparison · 2 laptops

Acer Aspire One 721-12B2ki vs Lenovo T400 (2765-8MG)

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  • 38specifications compared
  • 23differ
  • 15identical
  • 105known for one product only

Key differences

  • Display diagonal
    • 29.5 cm (11.6")
    • 35.8 cm (14.1")
  • Display resolution
    • 1366 x 768 pixels
    • 1440 x 900 pixels
  • Native aspect ratio
    • 16:9
    • 16:10
  • Processor manufacturer
    • AMD
    • Intel
  • Processor family
    • AMD Athlon Neo
    • Intel® Core™2 Duo
  • Processor model
    • K125
    • T9600
  • Processor frequency
    • 1.7 GHz
    • 2.8 GHz
  • Processor cache
    • 1 MB
    • 6 MB

Side by side

Differences highlightedShow differences only
143 specifications
A

Acer

Aspire One 721-12B2kiView product
B

Lenovo

T400 (2765-8MG)View product
Designidentical
Product typeKnown for oneNetbook
Display3 differ
Display diagonalDiffers29.5 cm (11.6")35.8 cm (14.1")
Display resolutionDiffers1366 x 768 pixels1440 x 900 pixels
Native aspect ratioDiffers16:916:10
Display brightnessKnown for one200 cd/m²
Processor6 differ
Processor manufacturerDiffersAMDIntel
Processor familyDiffersAMD Athlon NeoIntel® Core™2 Duo
Processor modelDiffersK125T9600
Processor coresKnown for one2
Processor threadsKnown for one2
Processor frequencyDiffers1.7 GHz2.8 GHz
Processor cacheDiffers1 MB6 MB
Processor front side busDiffers800 MHz1066 MHz
Processor socketKnown for oneSocket 478
Processor lithographyKnown for one45 nm
Processor operating modesKnown for one64-bit
Processor seriesKnown for oneIntel Core 2 Duo T9000 Series
Processor codenameKnown for onePenryn
Bus typeKnown for oneFSB
FSB ParityKnown for oneNo
SteppingKnown for oneE1
Thermal Design Power (TDP)Known for one35 W
TjunctionKnown for one105 °C
Number of Processing Die TransistorsKnown for one410 M
Processing Die sizeKnown for one107 mm²
CPU multiplier (bus/core ratio)Known for one10.5
ECC supported by processorKnown for oneNo
Memory2 differ
Internal memoryDiffers2 GB4 GB
Memory clock speedKnown for one1066 MHz
Memory layout (slots x size)Known for one2 x 2 GB
Maximum internal memoryDiffers4 GB8 GB
Memory slotsKnown for one2x SO-DIMM
Storage2 differ
Total storage capacityDiffers320 GB250 GB
Number of HDDs installedKnown for one1
HDD speedDiffers5400 RPM7200 RPM
Optical drive typeKnown for oneDVD-ROM
HDD capacityKnown for one320 GB
Graphicsidentical
On-board graphics cardKnown for oneNo
Discrete graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneAMD Radeon HD 3470
Discrete graphics card memoryKnown for one0.25 GB
Graphics card familyKnown for oneAMD
On-board graphics card modelKnown for oneNot available
Maximum graphics card memoryKnown for one0.5 GB
Graphics cardKnown for oneRadeon HD 4225
Network2 differ
Mobile network connectionKnown for oneYes
Mobile network generationKnown for one3G
Networking featuresDiffersGigabit Ethernet, WLANGigabit Ethernet
Bluetooth versionDiffers3.0+HS2.1+EDR
Cabling technologyKnown for one10/100/1000Base-T(X)
Wireless technologyKnown for one802.11b/g/n
Ethernet LAN data ratesKnown for one10,100,1000 Mbit/s
Ports & interfaces1 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0
eSATA ports quantityKnown for one0
HDMI ports quantityDiffers10
DisplayPorts quantityKnown for one0
DVI portKnown for oneNo
Firewire (IEEE 1394) portsKnown for one1
S/PDIF out portKnown for oneNo
Microphone inKnown for oneYes
Docking connectorKnown for oneNo
ExpressCard slotKnown for oneYes
CardBus PCMCIA slots quantityKnown for one0
CardBus PCMCIA slot typeKnown for oneNo
SmartCard slotKnown for oneNo
Modem (RJ-11) portsKnown for one0
TV-in portKnown for oneNo
TV-outKnown for oneNo
Performanceidentical
Motherboard chipsetKnown for oneIntel® GM45 Express
GPS (satellite)Known for oneNo
Keyboardidentical
Pointing deviceKnown for oneThinkPad UltraNav
Software1 differ
Operating system installedDiffersWindows 7 Home PremiumWindows Vista Business
Operating system architectureKnown for one32-bit
Processor special featuresidentical
Intel® Wireless Display (Intel® WiDi)Known for oneNo
Embedded options availableKnown for oneNo
Enhanced Intel SpeedStep TechnologyKnown for oneYes
Execute Disable BitKnown for oneYes
Idle StatesKnown for oneNo
Intel 64Known for oneYes
Intel Clear Video TechnologyKnown for oneNo
Intel Demand Based SwitchingKnown for oneNo
Intel Dual Display Capable TechnologyKnown for oneNo
Intel Enhanced Halt StateKnown for oneNo
Intel FDI TechnologyKnown for oneNo
Intel Fast Memory AccessKnown for oneNo
Intel Flex Memory AccessKnown for oneNo
Intel Rapid Storage TechnologyKnown for oneNo
Intel Trusted Execution TechnologyKnown for oneYes
Intel VT-x with Extended Page Tables (EPT)Known for oneNo
Intel Virtualization Technology (VT-x)Known for oneYes
Intel Virtualization Technology for Directed I/O (VT-d)Known for oneNo
Intel® AES New Instructions (Intel® AES-NI)Known for oneNo
Intel® Anti-Theft Technology (Intel® AT)Known for oneNo
Intel® Clear Video HD Technology (Intel® CVT HD)Known for oneNo
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for oneNo
Intel® Hyper Threading Technology (Intel® HT Technology)Known for oneNo
Intel® InTru™ 3D TechnologyKnown for oneNo
Intel® Insider™Known for oneNo
Intel® My WiFi Technology (Intel® MWT)Known for oneNo
Intel® Quick Sync Video TechnologyKnown for oneNo
Intel® Turbo Boost TechnologyKnown for oneNo
Processor ARK IDKnown for one35563
Processor codeKnown for oneSLG9F
Processor package sizeKnown for one35 x 35 mm
Thermal Monitoring TechnologiesKnown for oneNo
Conflict-Free processorKnown for oneNo
Battery1 differ
Battery life (max)Differs5.5 h6.5 h
Battery technologyKnown for oneLithium-Ion (Li-Ion)
Battery capacityKnown for one4400 mAh
Security1 differ
Cable lock slotDiffersYesNo
Fingerprint readerKnown for oneYes
Trusted Platform Module (TPM)Known for oneYes
Cable lock slot typeKnown for oneKensington
BIOS passwordKnown for oneYes
HDD user passwordKnown for oneYes
Weight & dimensions4 differ
WidthDiffers285 mm335.3 mm
DepthDiffers204 mm238 mm
Height (front)Differs2.57 cm2.76 cm
Height (rear)Differs2.8 cm3.19 cm
WeightKnown for one1.4 kg
Other featuresidentical
Infrared data portKnown for oneNo
Compliance industry standardsKnown for oneIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Intel segment taggingKnown for oneHome office, Small Business
Supplied AC adapter typeKnown for oneAC
Audioidentical
Audio systemKnown for oneHigh Definition Audio
Number of built-in speakersKnown for one2
Built-in microphoneKnown for oneYes
Cameraidentical
Front camera resolution (numeric)Known for one1.3 MP

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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