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Product comparison · 2 laptops

Acer Aspire 5551G vs Acer Aspire One 721

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  • 42specifications compared
  • 15differ
  • 27identical
  • 58known for one product only

Key differences

  • Product colour
    • Black, Silver
    • Black
  • Display diagonal
    • 39.6 cm (15.6")
    • 29.5 cm (11.6")
  • Processor family
    • AMD Athlon II
    • AMD Athlon Neo
  • Processor model
    • P320
    • K125
  • Processor frequency
    • 2.1 GHz
    • 1.7 GHz
  • Processor cache
    • 0.512 MB
    • 1 MB
  • Internal memory
    • 4 GB
    • 2 GB
  • Maximum internal memory
    • 8 GB
    • 4 GB

Side by side

Differences highlightedShow differences only
100 specifications
A

Acer

Aspire 5551GView product
B

Acer

Aspire One 721View product
Design1 differ
Product colourDiffersBlack, SilverBlack
Product typeKnown for oneNetbook
Display1 differ
Display diagonalDiffers39.6 cm (15.6")29.5 cm (11.6")
Display resolution1366 x 768 pixels1366 x 768 pixels
LED backlightYesYes
Native aspect ratio16:916:9
Display brightnessKnown for one200 cd/m²
Display number of coloursKnown for one16.78 million colours
Processor4 differ
Processor familyDiffersAMD Athlon IIAMD Athlon Neo
Processor modelDiffersP320K125
Processor frequencyDiffers2.1 GHz1.7 GHz
Processor cacheDiffers0.512 MB1 MB
Processor cache typeL2L2
Processor manufacturerKnown for oneAMD
Memory2 differ
Internal memoryDiffers4 GB2 GB
Internal memory typeDDR3-SDRAMDDR3-SDRAM
Memory clock speed1066 MHz1066 MHz
Memory slots2x SO-DIMM2x SO-DIMM
Maximum internal memoryDiffers8 GB4 GB
Storage1 differ
Total storage capacityDiffers640 GB320 GB
Number of HDDs installedKnown for one1
Optical drive typeKnown for oneDVD Super Multi DL
Card reader integratedYesYes
Compatible memory cardsMemory Stick (MS), MMC, MS PRO, SD, xDMemory Stick (MS), MMC, MS PRO, SD, xD
HDD interfaceKnown for oneSATA
Graphicsidentical
On-board graphics cardKnown for oneNo
Discrete graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneAMD Radeon HD 5650
Graphics card familyKnown for oneAMD
On-board graphics card modelKnown for oneNot available
Maximum graphics card memoryKnown for one1.024 GB
Graphics cardKnown for oneRadeon HD 4225
Audioidentical
Audio systemHDAHDA
Number of built-in speakers22
Built-in microphoneKnown for oneYes
Cameraidentical
Front camera resolution (numeric)1.3 MP1.3 MP
Network1 differ
Wi-FiYesYes
Networking featuresKnown for oneGigabit Ethernet
Wireless technologyDiffersWi-Fi802.11 b/g/n
BluetoothNoNo
Cabling technologyKnown for one10/100/1000Base-T(X)
Ethernet LANKnown for oneYes
Ethernet LAN data ratesKnown for one10,100,1000 Mbit/s
Ports & interfacesidentical
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 quantity11
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 inKnown for oneYes
Docking connectorKnown for oneNo
ExpressCard slotKnown 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 oneAMD M880G
GPS (satellite)Known for oneNo
Keyboardidentical
Pointing deviceTouchpadTouchpad
Numeric keypadKnown for oneYes
Number of keyboard cursor keysKnown for one4
Keyboard function keysKnown for one11
Keyboard number of keysKnown for one84
Softwareidentical
Operating system installedWindows 7 Home PremiumWindows 7 Home Premium
Battery1 differ
Number of battery cells66
Battery capacity4400 mAh4400 mAh
Battery life (max)Differs2.5 h5 h
Battery recharge timeKnown for one2 h
Battery technologyKnown for oneLithium-Ion (Li-Ion)
Power1 differ
AC adapter powerDiffers90 W65 W
DC-in jackYesYes
Securityidentical
Cable lock slotYesYes
Cable lock slot typeKensingtonKensington
Password protection typeKnown for oneBIOS
HDD user passwordKnown for oneYes
BIOS passwordKnown for oneYes
Sustainabilityidentical
Sustainability certificatesKnown for oneENERGY STAR
Weight & dimensions3 differ
WeightDiffers2.6 kg1.4 kg
WidthDiffers381 mm285 mm
DepthDiffers253 mm204 mm
Height (front)Known for one2.5 cm
Height (rear)Known for one3.4 cm
HeightKnown for one28 mm
Other featuresidentical
Infrared data portKnown for oneNo
Compliance industry standardsKnown for oneIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Power supply typeKnown for oneAC
Wake-on-LAN readyKnown for oneYes
Internal modemKnown for oneNo
TV tuner integratedKnown for oneNo
Supplied AC adapter typeACAC

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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