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Product comparison · 2 pcs/workstations

HP Compaq dc7900 CMT vs HP Compaq dc7900 USDT

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  • 102specifications compared
  • 22differ
  • 80identical
  • 10known for one product only

Key differences

  • Processor model
    • E8500
    • E8400
  • Processor frequency
    • 3.16 GHz
    • 3 GHz
  • CPU multiplier (bus/core ratio)
    • 9.5
    • 9
  • Stepping
    • C0
    • E0
  • Maximum internal memory
    • 16 GB
    • 8 GB
  • Memory layout (slots x size)
    • 2 x 1 GB
    • 1 x 2 GB
  • Total storage capacity
    • 250 GB
    • 160 GB
  • Card reader integrated
    • Yes
    • No

Side by side

Differences highlightedShow differences only
112 specifications
A

HP

Compaq dc7900 CMTView product
B

HP

Compaq dc7900 USDTView product
Processor4 differ
Processor manufacturerIntelIntel
Processor familyIntel® Core™2 DuoIntel® Core™2 Duo
Processor modelDiffersE8500E8400
Processor cores22
Processor threads22
Processor frequencyDiffers3.16 GHz3 GHz
Processor cache6 MB6 MB
Processor cache typeL2L2
Processor front side bus1333 MHz1333 MHz
Bus typeFSBFSB
FSB ParityNoNo
Processor lithography45 nm45 nm
Processor operating modes64-bit64-bit
Processor seriesIntel Core 2 Duo E8000 SeriesIntel Core 2 Duo E8000 Series
Processor codenameWolfdaleWolfdale
Processor system typeKnown for oneDP
Thermal Design Power (TDP)65 W65 W
Tcase72.4 °C72.4 °C
Processor socketLGA 775 (Socket T)LGA 775 (Socket T)
Number of Processing Die Transistors410 M410 M
Processing Die size107 mm²107 mm²
CPU multiplier (bus/core ratio)Differs9.59
Processor core voltage (AC)Known for one0.850/1.3625 V
SteppingDiffersC0E0
ECC supported by processorNoNo
Memory2 differ
Internal memory2 GB2 GB
Maximum internal memoryDiffers16 GB8 GB
Internal memory typeDDR2-SDRAMDDR2-SDRAM
Memory layout (slots x size)Differs2 x 1 GB1 x 2 GB
Memory slotsKnown for one2x SO-DIMM
Storage2 differ
Total storage capacityDiffers250 GB160 GB
Optical drive typeDVD Super MultiDVD Super Multi
HDD interfaceKnown for oneSATA
HDD speed7200 RPM7200 RPM
Card reader integratedDiffersYesNo
Storage drive controllerSATA 3.0Gb/sSATA 3.0Gb/s
Graphicsidentical
Discrete graphics card modelIntel® GMA 4500MIntel® GMA 4500M
Video adapter, busPCI Express x16PCI Express x16
On-board graphics card modelKnown for oneNot available
Performanceidentical
Product typePCPC
Optical driveidentical
LightScribeYesYes
Network1 differ
Networking featuresDiffersIntel 82567LM GigabitGigabit
Ports & interfaces1 differ
USB 2.0 ports quantity88
Ethernet LAN (RJ-45) ports11
Headphone outputs11
Microphone inYesYes
VGA (D-Sub) ports quantity11
PS/2 ports quantity22
Serial ports quantityDiffers10
Parallel ports quantity00
Expansion slots1 differ
PCI Express x1 slotsKnown for one2
PCI Express x16 slotsKnown for one1
Expansion slotsDiffers3 x PCI1 x PCIe (mini)
Power1 differ
Power requirements90 – 264 / 100 – 240 VAC, 50/60 Hz, 47 – 63 Hz90 – 264 / 100 – 240 VAC, 50/60 Hz, 47 – 63 Hz
Power consumption (typical)Differs365 W135 W
Designidentical
Chassis typeKnown for oneMini Tower
Cable lock slotYesYes
Cable lock slot typeKensingtonKensington
External drive baysKnown for one3 x 5.25", 1 x 3.5"
Country of originChinaChina
Softwareidentical
Operating system installedWindows Vista BusinessWindows Vista Business
Display3 differ
Display includedYesYes
Display diagonalDiffers55.9 cm (22")48.3 cm (19")
Display resolutionDiffers1680 x 1050 pixels1280 x 1024 pixels
Contrast ratio (typical)Differs1000:1800:1
Display brightness300 cd/m²300 cd/m²
Viewing angle, horizontal160°160°
Viewing angle, vertical160°160°
DisplayTFTTFT
Processor special features3 differ
Embedded options availableDiffersNoYes
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
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 TechnologyYesYes
Intel VT-x with Extended Page Tables (EPT)NoNo
Intel Virtualization Technology (VT-x)YesYes
Intel Virtualization Technology for Directed I/O (VT-d)YesYes
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 IDDiffers3391133910
Processor codeDiffersSLAPKSLB9J
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
Graphics & IMC lithographyKnown for one45 nm
Audioidentical
Audio systemHDHD
Operational conditionsidentical
Operating temperature (T-T)10 - 35 °C10 - 35 °C
Storage temperature (T-T)-30 - 60 °C-30 - 60 °C
Operating relative humidity (H-H)10 - 90%10 - 90%
Storage relative humidity (H-H)5 - 95%5 - 95%
Weight & dimensions4 differ
WidthDiffers177 mm251 mm
DepthDiffers452 mm254 mm
HeightDiffers447 mm66 mm
WeightDiffers11.8 kg3.1 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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