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Product comparison · 2 laptops

Acer Aspire One 721-122kG32 vs Lenovo Essential B550

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  • 38specifications compared
  • 15differ
  • 23identical
  • 100known for one product only

Key differences

  • Display diagonal
    • 29.5 cm (11.6")
    • 39.6 cm (15.6")
  • Processor manufacturer
    • AMD
    • Intel
  • Processor family
    • AMD Athlon
    • Intel® Pentium® Dual-Core
  • Processor model
    • K125
    • T4400
  • Processor frequency
    • 1.7 GHz
    • 2.2 GHz
  • Processor front side bus
    • 2000 MHz
    • 800 MHz
  • Internal memory
    • 2 GB
    • 1 GB
  • Internal memory type
    • DDR2-SDRAM
    • DDR3-SDRAM

Side by side

Differences highlightedShow differences only
138 specifications
A

Acer

Aspire One 721-122kG32View product
B

Lenovo

Essential B550View product
Designidentical
Product colourBlackBlack
Product typeKnown for oneNetbook
Display1 differ
Display diagonalDiffers29.5 cm (11.6")39.6 cm (15.6")
Display resolution1366 x 768 pixels1366 x 768 pixels
LED backlightYesYes
Native aspect ratio16:916:9
Display surfaceKnown for oneGloss
Contrast ratio (typical)Known for one500:1
Processor5 differ
Processor manufacturerDiffersAMDIntel
Processor familyDiffersAMD AthlonIntel® Pentium® Dual-Core
Processor modelDiffersK125T4400
Processor coresKnown for one2
Processor threadsKnown for one2
Processor frequencyDiffers1.7 GHz2.2 GHz
Processor cache1 MB1 MB
Processor cache typeL2L2
Processor front side busDiffers2000 MHz800 MHz
Processor socketKnown for oneSocket 478
Processor lithographyKnown for one45 nm
Processor operating modesKnown for one64-bit
Processor seriesKnown for oneIntel Pentium T4000 Series for Mobile
Processor codenameKnown for onePenryn
Bus typeKnown for oneFSB
FSB ParityKnown for oneNo
SteppingKnown for oneR0
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 one11
ECC supported by processorKnown for oneNo
Memory2 differ
Internal memoryDiffers2 GB1 GB
Internal memory typeDiffersDDR2-SDRAMDDR3-SDRAM
Memory clock speedKnown for one1066 MHz
Memory layout (slots x size)Known for one1 x 1 GB
Memory slots2x SO-DIMM2x SO-DIMM
Maximum internal memory4 GB4 GB
Storageidentical
Total storage capacityKnown for one320 GB
HDD interfaceKnown for oneSATA
HDD speedKnown for one5400 RPM
Optical drive typeKnown for oneDVD Super Multi DL
Card reader integratedYesYes
HDD capacityKnown for one320 GB
Compatible memory cardsKnown for oneMMC, MS PRO, SD, xD
Graphicsidentical
Discrete graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneIntel® GMA 4500M
Graphics card familyKnown for oneIntel
Graphics cardKnown for oneRadeon HD 4225
Audioidentical
Audio systemHigh Definition AudioHigh Definition Audio
Number of built-in speakers22
Speaker powerKnown for one4 W
Audio system direct 3D soundKnown for oneYes
Built-in microphoneKnown for oneYes
Camera1 differ
Front camera resolution (numeric)Differs1.3 MP0.3 MP
Networkidentical
Wi-FiYesYes
Networking featuresKnown for oneFast Ethernet, WLAN
BluetoothYesYes
Wireless technologyKnown for oneIEEE 802.11b/g/n
Ethernet LANKnown for oneYes
Bluetooth versionKnown for one3.0+HS
Ports & interfaces1 differ
USB 2.0 ports quantity33
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0
eSATA ports quantityKnown for one0
Ethernet LAN (RJ-45) ports11
HDMI ports quantityDiffers10
DisplayPorts quantityKnown for one0
DVI portKnown for oneNo
VGA (D-Sub) ports quantity11
Firewire (IEEE 1394) portsKnown for one0
Headphone outputs11
S/PDIF out portKnown for oneNo
Microphone inYesYes
Docking connectorKnown for oneNo
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
PS/2 ports quantityKnown for one0
Parallel ports quantityKnown for one0
Serial ports quantityKnown for one0
Performanceidentical
Motherboard chipsetKnown for oneIntel® GL40 Express
Keyboardidentical
Pointing deviceTouchpadTouchpad
Software1 differ
Operating system installedDiffersWindows 7 Home PremiumFreeDOS
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 oneYes
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 oneYes
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 oneNo
Intel VT-x with Extended Page Tables (EPT)Known for oneNo
Intel Virtualization Technology (VT-x)Known for oneNo
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 one40739
Processor codeKnown for oneSLGJL
Processor package sizeKnown for one35 x 35 mm
Thermal Monitoring TechnologiesKnown for oneNo
Conflict-Free processorKnown for oneNo
Battery1 differ
Number of battery cells66
Battery life (max)Differs5 h4 h
Battery technologyKnown for oneLithium-Ion (Li-Ion)
Poweridentical
DC-in jackYesYes
Securityidentical
Cable lock slotYesYes
Cable lock slot typeKensingtonKensington
Password protection typeKnown for oneBIOS
HDD user passwordKnown for oneYes
Weight & dimensions3 differ
WeightDiffers1.4 kg2.7 kg
WidthDiffers285 mm381 mm
DepthDiffers204 mm245 mm
HeightKnown for one36 mm
Dimensions (WxDxH)Known for one381 x 245 x 36 mm
Height (front)Known for one2.57 cm
Height (rear)Known for one2.8 cm
Packaging contentidentical
AC adapter includedKnown for oneYes
Other featuresidentical
Infrared data portKnown for oneNo
Internal modemKnown for oneNo
TV tuner integratedKnown for oneNo
Supplied AC adapter typeKnown for oneAC

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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