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Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51p P4 550 3.4GHz vs Lenovo ThinkCentre A51p Pentium 4 540 HT 3.2GHz

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  • 32specifications compared
  • 8differ
  • 24identical
  • 44known for one product only

Key differences

  • Processor frequency
    • 3.4 GHz
    • 3.2 GHz
  • Internal memory
    • 0.5 GB
    • 0.25 GB
  • Optical drive type
    • DVD-RW
    • DVD-ROM
  • Discrete graphics card model
    • Intel® GMA 900
    • AMD Radeon X600 Pro
  • Operating system installed
    • Windows XP Professional
    • Windows XP Home Edition
  • Display included
    • No
    • Yes

Side by side

Differences highlightedShow differences only
76 specifications
A

Lenovo

ThinkCentre A51p P4 550 3.4GHzView product
B

Lenovo

ThinkCentre A51p Pentium 4 540 HT 3.2GHzView product
Processor1 differ
Processor manufacturerIntelIntel
Processor familyIntel® Pentium® 4Intel® Pentium® 4
Processor modelKnown for one550
Processor coresKnown for one1
Processor frequencyDiffers3.4 GHz3.2 GHz
Processor cacheKnown for one1 MB
Processor cache typeKnown for oneL2
Processor front side bus800 MHz800 MHz
Bus typeKnown for oneFSB
FSB ParityKnown for oneNo
TcaseKnown for one72.8 °C
TjunctionKnown for one100 °C
ECC supported by processorKnown for oneNo
Memory1 differ
Internal memoryDiffers0.5 GB0.25 GB
Maximum internal memory4 GB4 GB
Internal memory typeDDR2-SDRAMDDR2-SDRAM
Storage1 differ
Total storage capacity160 GB160 GB
Optical drive typeDiffersDVD-RWDVD-ROM
Storage drive typeKnown for oneSATA
Diskette drive memory1.44 MB1.44 MB
HDD interfaceKnown for oneSATA
Graphics1 differ
Discrete graphics card modelDiffersIntel® GMA 900AMD Radeon X600 Pro
Video adapter, busPCI ExpressPCI Express
Performanceidentical
Product typePCPC
Networkidentical
Networking featuresEthernet/Fast Ethernet/Gigabit EthernetEthernet/Fast Ethernet/Gigabit Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity88
Ethernet LAN (RJ-45) ports11
Headphone outputs11
Microphone inYesYes
VGA (D-Sub) ports quantity11
PS/2 ports quantity22
Parallel ports quantity11
Firewire (IEEE 1394) portsKnown for one1
Modem (RJ-11) portsKnown for one1
Poweridentical
Power supply typeKnown for one110~220V
Power supply310 W310 W
Designidentical
Chassis typeTowerTower
Software2 differ
Operating system installedDiffersWindows XP ProfessionalWindows XP Home Edition
Bundled softwareDiffersLotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Lotus SmartSuite Millennium, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage RescueLotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage Rescue and Recovery with Rapid Restore
Display1 differ
Display includedDiffersNoYes
Processor special featuresidentical
Enhanced Intel SpeedStep TechnologyKnown for oneNo
Idle StatesKnown for oneNo
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 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® 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® InTru™ 3D TechnologyKnown for oneNo
Intel® Insider™Known for oneNo
Intel® Wireless Display (Intel® WiDi)Known for oneNo
Thermal Monitoring TechnologiesKnown for oneNo
Intel® Turbo Boost TechnologyKnown for oneNo
Intel® Quick Sync Video TechnologyKnown for oneNo
Intel® My WiFi Technology (Intel® MWT)Known for oneNo
Intel® Anti-Theft Technology (Intel® AT)Known for oneNo
Conflict-Free processorKnown for oneNo
Audioidentical
Audio systemSoundMAX CadenzaSoundMAX Cadenza
Weight & dimensionsidentical
Width175 mm175 mm
Depth450 mm450 mm
Height492 mm492 mm
Weight13.5 kg13.5 kg
Other features1 differ
Security featuresDiffers-Parallel port I/O control -Power on password -Secure Data Disposal -Serial port I/O control -Kensington Lock Standard Enabled -Embedded Security Subsystem standard -Diskette boot inhibit -Diskette I/O control -Hard disk drive password -Hardfile I/O control -Configuration password -Boot sequence con-Boot sequence control -Diskette I/O control -Diskette boot inhibit -Boot without keyboard or mouse -Configuration password -Secure Data Disposal -Serial port I/O control -Power on password -Parallel port I/O control -Embedded Security Subsystem standard -Hard disk drive password -Hardfile I/O contr
Optical driveidentical
CD read speedKnown for one48x
CD write speedKnown for one48x
CD rewrite speedKnown for one32x
DVD read speedKnown for one16x

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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