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Product comparison · 2 pcs/workstations

HP dc7900 SFF + L1908W vs Lenovo ThinkCentre A57 + 19" monitor

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  • 84specifications compared
  • 31differ
  • 53identical
  • 18known for one product only

Key differences

The Lenovo ThinkCentre A57 + 19" monitor has 2 more processor cores than the HP dc7900 SFF + L1908W (4 vs 2). The Lenovo ThinkCentre A57 + 19" monitor has 2 more processor threads than the HP dc7900 SFF + L1908W (4 vs 2). The HP dc7900 SFF + L1908W has 0.6 GHz more processor frequency than the Lenovo ThinkCentre A57 + 19" monitor (3 GHz vs 2.4 GHz). Only the HP dc7900 SFF + L1908W has embedded options available. Only the HP dc7900 SFF + L1908W has Intel Trusted Execution Technology.

  • Processor family
    • Intel® Core™2 Duo
    • Intel® Core™2 Quad
  • Processor model
    • E8400
    • Q6600
  • Processor cores
    • 2
    • 4
  • Processor threads
    • 2
    • 4
  • Processor frequency
    • 3 GHz
    • 2.4 GHz
  • Processor cache
    • 6 MB
    • 8 MB
  • Processor front side bus
    • 1333 MHz
    • 1066 MHz
  • Processor lithography
    • 45 nm
    • 65 nm

Side by side

Differences highlightedShow differences only
102 specifications
A

HP

dc7900 SFF + L1908WView product
B

Lenovo

ThinkCentre A57 + 19" monitorView product
Processor15 differ
Processor manufacturerIntelIntel
Processor familyDiffersIntel® Core™2 DuoIntel® Core™2 Quad
Processor modelDiffersE8400Q6600
Processor coresDiffers24
Processor threadsDiffers24
Processor frequencyDiffers3 GHz2.4 GHz
Processor cacheDiffers6 MB8 MB
Processor cache typeL2L2
Processor front side busDiffers1333 MHz1066 MHz
Bus typeFSBFSB
FSB ParityNoNo
Processor lithographyDiffers45 nm65 nm
Processor operating modes64-bit64-bit
Processor seriesDiffersIntel Core 2 Duo E8000 SeriesIntel Core 2 Quad Q6000 Series
Processor codenameDiffersWolfdaleKentsfield
Thermal Design Power (TDP)Differs65 W95, 105
TcaseDiffers72.4 °CB3=62.2; G0=71
Processor socketLGA 775 (Socket T)LGA 775 (Socket T)
Number of Processing Die TransistorsDiffers410 M582 M
Processing Die sizeDiffers107 mm²286 mm²
CPU multiplier (bus/core ratio)99
SteppingDiffersE0G0
ECC supported by processorNoNo
Processor core voltage (AC)Known for one0.85 - 1.5 V
Memory1 differ
Internal memory2 GB2 GB
Maximum internal memoryDiffers16 GB4 GB
Internal memory typeDDR2-SDRAMDDR2-SDRAM
Memory layout (slots x size)2 x 1 GB2 x 1 GB
Memory slotsKnown for one2x DIMM
Storage1 differ
Total storage capacityDiffers160 GB320 GB
Optical drive typeDVD±RWDVD±RW
HDD interfaceSATASATA
HDD speed7200 RPM7200 RPM
Card reader integratedNoNo
Graphics1 differ
Discrete graphics card modelDiffersIntel® GMA 4500MIntel® GMA 3100
On-board graphics card modelKnown for oneNot available
Performanceidentical
Product typePCPC
Optical driveidentical
LightScribeKnown for oneYes
Networkidentical
Networking featuresGigabit EthernetGigabit Ethernet
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers86
Ethernet LAN (RJ-45) ports11
Headphone outputs11
Microphone inYesYes
VGA (D-Sub) ports quantity11
PS/2 ports quantity22
Serial ports quantityDiffers10
Parallel ports quantityDiffers01
Poweridentical
Power consumption (typical)Known for one240 W
Power supplyKnown for one280 W
Power supply input voltageKnown for one110 - 220 V
Power supply input frequencyKnown for one50 - 60 Hz
Design1 differ
Chassis typeDiffersSFFTower
Country of originKnown for oneChina
Softwareidentical
Operating system installedWindows Vista BusinessWindows Vista Business
Displayidentical
Display includedYesYes
Display diagonal48.3 cm (19")48.3 cm (19")
Display resolutionKnown for one1440 x 900 pixels
Contrast ratio (typical)Known for one1000:1
Display brightnessKnown for one300 cd/m²
Viewing angle, horizontalKnown for one160°
Viewing angle, verticalKnown for one160°
DisplayKnown for oneTFT
Processor special features4 differ
Embedded options availableDiffersYesNo
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
Graphics & IMC lithographyKnown for one45 nm
Idle StatesYesYes
Intel 64YesYes
Intel Clear Video TechnologyNoNo
Intel Demand Based SwitchingNoNo
Intel Dual Display Capable TechnologyNoNo
Intel Enhanced Halt StateYesYes
Intel FDI TechnologyNoNo
Intel Fast Memory AccessNoNo
Intel Flex Memory AccessNoNo
Intel Rapid Storage TechnologyNoNo
Intel Trusted Execution TechnologyDiffersYesNo
Intel VT-x with Extended Page Tables (EPT)NoNo
Intel Virtualization Technology (VT-x)YesYes
Intel Virtualization Technology for Directed I/O (VT-d)DiffersYesNo
Intel® AES New Instructions (Intel® AES-NI)NoNo
Intel® Clear Video HD Technology (Intel® CVT HD)NoNo
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)NoNo
Intel® InTru™ 3D TechnologyNoNo
Intel® Insider™NoNo
Intel® Wireless Display (Intel® WiDi)NoNo
Processor ARK IDDiffers3391029765
Processor codeKnown for oneSLB9J
Processor package size37.5 x 37.5 mm37.5 x 37.5 mm
Thermal Monitoring TechnologiesYesYes
Intel® Turbo Boost TechnologyNoNo
Intel® Hyper Threading Technology (Intel® HT Technology)NoNo
Intel® Quick Sync Video TechnologyNoNo
Intel® My WiFi Technology (Intel® MWT)NoNo
Intel® Anti-Theft Technology (Intel® AT)NoNo
Conflict-Free processorNoNo
Audio1 differ
Audio systemDiffersHigh Definition AudioRealtek ALC662
Operational conditionsidentical
Non-operating altitudeKnown for one9144
Weight & dimensions4 differ
WidthDiffers337 mm175 mm
DepthDiffers378 mm440 mm
HeightDiffers100 mm402 mm
WeightDiffers8.5 kg11 kg

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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