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Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51 Intel® Pentium® 4 630 vs Lenovo ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home

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  • 71specifications compared
  • 21differ
  • 50identical
  • 25known for one product only

Key differences

  • Processor model
    • 630
    • 550
  • Processor frequency
    • 3 GHz
    • 3.4 GHz
  • Processor cache
    • 2 MB
    • 1 MB
  • Tcase
    • 66.6 °C
    • 72.8 °C
  • Internal memory
    • 0.25 GB
    • 0.5 GB
  • Total storage capacity
    • 80 GB
    • 160 GB
  • Optical drive type
    • DVD-ROM
    • DVD-RW
  • Discrete graphics card model
    • Intel® GMA 900
    • AMD Radeon X600 Pro

Side by side

Differences highlightedShow differences only
96 specifications
A

Lenovo

ThinkCentre A51 Intel® Pentium® 4 630

Model A51

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B

Lenovo

ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP HomeView product
Processor4 differ
Processor modelDiffers630550
Processor threadsKnown for one2
Processor frequencyDiffers3 GHz3.4 GHz
Processor cacheDiffers2 MB1 MB
Processor lithographyKnown for one90 nm
Processor operating modesKnown for one64-bit
Processor seriesKnown for oneIntel Pentium 4 600 Series supporting Hyper-Threading Technology
Processor codenameKnown for onePrescott
Thermal Design Power (TDP)Known for one84 W
TcaseDiffers66.6 °C72.8 °C
Processor socketKnown for oneLGA 775 (Socket T)
Number of Processing Die TransistorsKnown for one169 M
Processing Die sizeKnown for one135 mm²
CPU multiplier (bus/core ratio)Known for one15
TjunctionKnown for one100 °C
Memory1 differ
Internal memoryDiffers0.25 GB0.5 GB
Storage2 differ
Total storage capacityDiffers80 GB160 GB
Optical drive typeDiffersDVD-ROMDVD-RW
Storage drive typeKnown for oneSATA
HDD interfaceKnown for oneSATA
Graphics2 differ
Discrete graphics card modelDiffersIntel® GMA 900AMD Radeon X600 Pro
Video adapter resolutionDiffers2048x1536 16777216 colors2048x1536 pixels
Optical driveidentical
DVD read speedKnown for one16x
Network1 differ
Networking featuresDiffersEthernet/Fast EthernetGigabit Ethernet
Ports & interfaces4 differ
USB 2.0 ports quantityDiffers68
Firewire (IEEE 1394) portsDiffers02
Serial ports quantityDiffers10
Modem (RJ-11) portsDiffers01
DVI portKnown for oneNo
S/PDIF out portKnown for oneNo
SmartCard slotKnown for oneNo
Design1 differ
Chassis typeDiffersDesktopTower
Software1 differ
Operating system installedDiffersWindows XP ProfessionalWindows XP Home Edition
Bundled softwareKnown for oneLotus SmartSuite Millennium ThinkVantage Client PC Doctor diagnostics ThinkVantage Rescue & Recovery
Processor special features1 differ
Embedded options availableKnown for oneNo
Enhanced Intel SpeedStep TechnologyDiffersYesNo
Execute Disable BitKnown for oneYes
Intel 64Known for oneYes
Processor ARK IDKnown for one27478
Processor package sizeKnown for one37.5 x 37.5 mm
Intel® Hyper Threading Technology (Intel® HT Technology)Known for oneYes
Weight & dimensions4 differ
WidthDiffers442 mm175 mm
DepthDiffers401 mm450 mm
HeightDiffers146 mm492 mm
WeightDiffers14 kg13.5 kg
Other featuresidentical
Security featuresKnown for one-Parallel port I/O control -Configuration password -Diskette boot inhibit -Diskette I/O control -Hardfile I/O control -Boot sequence control -Boot without keyboard or mouse -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature

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