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Product comparison · 2 pcs/workstations

HP Compaq dc7900 Small Form Factor PC vs HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR)

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  • 112specifications compared
  • 32differ
  • 80identical
  • 40known for one product only

Key differences

The HP Compaq dc7900 Small Form Factor PC has 0.16 GHz more processor frequency than the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) (3.16 GHz vs 3 GHz). The HP Compaq dc7900 Small Form Factor PC has 0.5 more CPU multiplier (bus/core ratio) than the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) (9.5 vs 9). The HP Compaq dc7900 Small Form Factor PC has 1 more serial ports quantity than the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) (1 vs 0). Only the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) has embedded options available. Processor model: E8500 on the HP Compaq dc7900 Small Form Factor PC, E8400 on the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR).

  • Processor model
    • E8500
    • E8400
  • Processor frequency
    • 3.16 GHz
    • 3 GHz
  • CPU multiplier (bus/core ratio)
    • 9.5
    • 9
  • Stepping
    • C0
    • E0
  • Optical drive type
    • DVD±RW
    • DVD Super Multi
  • Serial ports quantity
    • 1
    • 0
  • Power supply
    • 240 W
    • 135 W
  • Power consumption (typical)
    • 240 W
    • 135 W

Side by side

Differences highlightedShow differences only
152 specifications
A

HP

Compaq dc7900 Small Form Factor PCView product
B

HP

Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR)View product
Processor4 differ
Processor modelDiffersE8500E8400
Processor frequencyDiffers3.16 GHz3 GHz
CPU multiplier (bus/core ratio)Differs9.59
SteppingDiffersC0E0
Processor system typeKnown for oneDP
Processor core voltage (AC)Known for one0.850/1.3625 V
Memoryidentical
Memory slotsKnown for one2x SO-DIMM
Memory upgradeKnown for one8 GB
Maximum internal memoryKnown for one16 GB
Memory layout (slots x size)Known for one2 x 1 GB
Minimum RAMKnown for one512 MB
Standard memory capacityKnown for one2 MB
Storage3 differ
Optical drive typeDiffersDVD±RWDVD Super Multi
HDD capacityKnown for one160 GB
HDD interfaceKnown for oneSATA II
Maximum HDD capacityKnown for one250 GB
Minimum storage drive spaceKnown for one80 GB
Floppy drive installedKnown for oneNo
Storage drive controllerDiffersSATA 3.0GB/s with NCQ and Smart IVSATA 3.0 Gb/s
Storage drive typeDiffers2 x 160 GB with optional dual drive RAID + Sata 2nd Cable160 GB 7200 rpm SATA 3.0 Gb/s NCQ, Smart IV
HDD controller typeKnown for oneSATA (7200 rpm)
Disk subsystem controllerKnown for oneSATA 3.0Gb/s
Diskette driveKnown for oneOptional 1.44 MB Diskette Drive, HP Media Card Reader 16-in-1 (5.25" with PCI)
HDD noteKnown for oneRAID 1 Mirrored Array configuration
Graphics1 differ
On-board graphics cardKnown for oneYes
On-board graphics card modelKnown for oneNot available
Graphics card familyKnown for oneIntel
Video card featuresDiffers3D/2D Controller: support is fully compliant with Microsoft standard API such as Microsoft DirectX9, DirectXVA, VMR9, GDI/GDI+; OpenGL 1.4.; Integrated VGA Controller; Integrated 400 MHz RAMDAC; Overlay Planes: Single overlay support with 5x3 filtering; Maximum Color Depth: 32 bits/pixel; Multi-dispIntegrated Intel Graphics Media Accelerator 4500
Video card resolutionKnown for oneMaximum Vertical Refresh Rate: 85 Hz at up to 1920x1440, 75 Hz at 2048x1536
Networkidentical
Ethernet LANKnown for oneYes
Wi-FiKnown for oneNo
Ports & interfaces2 differ
HDMI ports quantityKnown for one0
DVI portKnown for oneNo
Firewire (IEEE 1394) portsKnown for one0
Serial ports quantityDiffers10
I/O portsDiffersRear: 6 USB 2.0, 1 serial port, 2 PS/2, 1 RJ-45, 1 VGA, 1 DisplayPort, audio in/out; Front: 2 USB 2.0, audio ports; Optional: 2nd serial port, 1 parallel port8 USB 2.0; 1 microphone in; 1 audio in; 1 audio out; 1 DisplayPort; 1 RJ-45; 2 PS/2; 1 VGA
Rear portsKnown for one6 USB 2.0; 1 serial; 2 PS/2; 1 RJ-45; 1 external VGA monitor; 1 DisplayPort; 1 audio in; 1 audio out; 1 parallel (optional); 1 serial (optional 2nd); 1 eSATA (optional)
Rear ports noteKnown for one6 USB 2.0; 1 serial; 2 PS/2; 1 RJ-45; 1 external VGA monitor; 1 DisplayPort; 1 audio in; 1 audio out; 1 parallel (optional); 1 serial (optional 2nd); 1 eSATA (optional)
Expansion slots1 differ
Expansion slotsDiffers1 low-profile PCI, 2 low-profile PCI Express x16, 1 low-profile PCI Express x11 x mini PCI
Power4 differ
Power supply typeDiffers240W 85% Efficient - Active PFC135W External 87% High Efficiency Active PFC
Power requirementsDiffersInput voltage 90 – 264 / 100 – 240 VAC, 50/60 Hz, 47 – 63 Hz, active PFC (85% High Efficiency) Operating Voltage Range: 90 – 264 VAC; Rated Voltage Range: 100 – 240 VAC; Rated Line Frequency: 50/60 Hz; Operating Line Frequency Range: 47 – 63 Hz; Rated Input Current: 4.0 A; with Energy Efficient Powe135W 87% efficient external power supply – active PFC
Power supplyDiffers240 W135 W
Power consumption (typical)Differs240 W135 W
Power managementKnown for oneOperating Voltage Range: 90 – 264 VAC; Rated Voltage Range: 100 – 240 VAC; Rated Line Frequency: 50/60 Hz; Operating Line Frequency Range: 47 – 63 Hz; Rated Input Current: 4.0 A; with Energy Efficient Power Supply: 3.5 A; Current Leakage (NFPA 99): < 275 µA; System Heat Dissipation: Typical 198 btu/
Designidentical
ErgonomicsKnown for oneTower stand
Internal drive baysKnown for one1 x 2.5"
Chassis typeKnown for oneSFF
Softwareidentical
Compatible operating systemsKnown for oneGenuine Windows XP Professional; Genuine Windows XP Home
Processor special features3 differ
Embedded options availableDiffersNoYes
Graphics & IMC lithographyKnown for one45 nm
Processor ARK IDDiffers3391133910
Processor codeDiffersSLAPKSLB9J
Audio1 differ
Audio systemDiffersHigh Definition AudioHD ADI1884
Operational conditions1 differ
Operating temperature (T-T)Differs10 - 35 °C50 - 95 °F
Relative humidityKnown for one10 - 90%
Non-operating relative humidity (non-condensing)Known for one5 - 90%
Weight & dimensions6 differ
WidthDiffers337 mm251.5 mm
DepthDiffers378 mm254 mm
HeightDiffers100 mm66 mm
WeightDiffers8.5 kg3.1 kg
Size (imperial)Differs33.8 cm (13.3")25.1 cm (9.9")
Weight (imperial)Differs18.75 lb7.0 lb
Packaging contentidentical
Remote control includedKnown for oneNo
Certificates1 differ
CertificationDiffersENERGY STAR qualified; EPEAT Gold; 85% efficient power supplyENERGY STAR qualified; EPEAT Gold; 87% efficient power supply
Keyboard2 differ
Pointing deviceDiffersHP PS/2 2-Button Optical Scroll MousePS/2 2-button optical scroll mouse
Keyboard typeDiffersHP PS/2 Standard KeyboardPS/2 standard keyboard
Features1 differ
Security management descriptionDiffersIntegrated 1.2 TPM Embedded Security Chip (except for Russia), HP Business PC Security Lock, HP USB Smartcard KeyboardHP ProtectTools Security Software Suite; Embedded TPM 1.2 compliant security module (TPM module disabled where use is restricted by law); TPM Pre-Boot Authentication (via BIOS); Smartcard Pre-boot Authentication (via BIOS); Stringent Security (via BIOS - must be enabled); SATA port disablement (via
Manageability featuresKnown for oneRAID 1 Mirrored Array. Energy efficient, space saving design. Long, stable lifecycle.
Other features2 differ
Security featuresDiffersKensington Lock, Solenoid Hood Lock / Sensor, HP 2008 (SFF) Wall Mount/Security SleeveKensington Lock, HP 2008 (SFF) Wall Mount/Security Sleeve
TV tuner integratedKnown for oneNo
Drive baysDiffers1 external 5.25 inch, 1 external 3.5 inch 1 internal 3.5 inch1 - slimline 1 – 2.5-in
Packaging dataidentical
Package weightKnown for one7 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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