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Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A55 + D221 vs Lenovo ThinkCentre M57 Small Desktop (9181-A1G), NL

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  • 83specifications compared
  • 25differ
  • 58identical
  • 20known for one product only

Key differences

  • Processor model
    • E4500
    • E6550
  • Processor frequency
    • 2.2 GHz
    • 2.33 GHz
  • Processor cache
    • 2 MB
    • 4 MB
  • Processor front side bus
    • 800 MHz
    • 1333 MHz
  • Tcase
    • 73.3 °C
    • 72 °C
  • Number of Processing Die Transistors
    • 167 M
    • 291 M
  • Processing Die size
    • 111 mm²
    • 143 mm²
  • CPU multiplier (bus/core ratio)
    • 11
    • 7

Side by side

Differences highlightedShow differences only
103 specifications
A

Lenovo

ThinkCentre A55 + D221View product
B

Lenovo

ThinkCentre M57 Small Desktop (9181-A1G), NLView product
Processor10 differ
Processor modelDiffersE4500E6550
Processor frequencyDiffers2.2 GHz2.33 GHz
Processor cacheDiffers2 MB4 MB
Processor front side busDiffers800 MHz1333 MHz
Processor seriesDiffersIntel Core 2 Duo E4000 SeriesIntel Core 2 Duo E6000 Series
TcaseDiffers73.3 °C72 °C
Number of Processing Die TransistorsDiffers167 M291 M
Processing Die sizeDiffers111 mm²143 mm²
CPU multiplier (bus/core ratio)Differs117
Processor core voltage (AC)Known for one0.85 - 1.5 V
SteppingDiffersM0G0
Number of processors installedKnown for one1
Memory1 differ
Memory slotsDiffers2x DIMM4x DIMM
Memory layout (slots x size)Known for one1 x 1 GB
Storage1 differ
Optical drive typeDiffersDVD±RWDVD-ROM
Graphics1 differ
Discrete graphics card modelDiffersIntel® GMA 3000Intel® GMA X3100
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers86
DVI portKnown for oneYes
PS/2 ports quantityDiffers21
Line-outKnown for oneYes
Line-inKnown for oneYes
Poweridentical
Power supplyKnown for one225 W
Power requirementsKnown for one115-230V, 50/60Hz
Power availabilityKnown for one280 W
Design1 differ
Chassis typeDiffersSFFSmall Desktop
Software1 differ
Operating system installedDiffersWindows XP ProfessionalWindows Vista Business
Bundled softwareKnown for oneYes
Display1 differ
Display includedDiffersYesNo
Display diagonalKnown for one55.9 cm (22")
Display resolutionKnown for one1680 x 1050 pixels
Contrast ratio (typical)Known for one700:1
Display brightnessKnown for one300 cd/m²
Viewing angle, horizontalKnown for one176°
Viewing angle, verticalKnown for one176°
DisplayKnown for oneTFT
Processor special features4 differ
Intel Trusted Execution TechnologyDiffersNoYes
Intel Virtualization Technology (VT-x)DiffersNoYes
Processor ARK IDDiffers3078130783
Processor codeDiffersSLA95SLA9X
Audio1 differ
Audio systemDiffersADI 1986 AAD1882
Weight & dimensions2 differ
HeightDiffers85 mm875 mm
WeightDiffers8.5 kg7.42 kg
Expansion slotsidentical
Expansion slotsKnown for one1x PCI Express 16X LP 1x PCI LP
Packaging contentidentical
Mouse includedKnown for oneYes
Other featuresidentical
Intel segment taggingKnown for oneEnterprise, Professional

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