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Product comparison · 2 pcs/workstations

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

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  • 115specifications compared
  • 31differ
  • 84identical
  • 34known for one product only

Key differences

The HP Compaq dc7900 Small Form Factor PC (ENERGY STAR) 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 (ENERGY STAR) 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 (ENERGY STAR) has 90 GB more total storage capacity than the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) (250 GB vs 160 GB). Only the HP Compaq dc7900 Small Form Factor PC (ENERGY STAR) has card reader integrated. Only the HP Compaq dc7900 Ultra-slim Desktop PC (ENERGY STAR) has embedded options available.

  • Processor model
    • E8500
    • E8400
  • Processor frequency
    • 3.16 GHz
    • 3 GHz
  • CPU multiplier (bus/core ratio)
    • 9.5
    • 9
  • Stepping
    • C0
    • E0
  • Total storage capacity
    • 250 GB
    • 160 GB
  • HDD capacity
    • 250 GB
    • 160 GB
  • Card reader integrated
    • Yes
    • No
  • Maximum HDD capacity
    • 500 GB
    • 250 GB

Side by side

Differences highlightedShow differences only
149 specifications
A

HP

Compaq dc7900 Small Form Factor PC (ENERGY STAR)View 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
Minimum RAMKnown for one512 MB
Storage6 differ
Total storage capacityDiffers250 GB160 GB
HDD capacityDiffers250 GB160 GB
HDD interfaceKnown for oneSATA II
Card reader integratedDiffersYesNo
Maximum HDD capacityDiffers500 GB250 GB
Floppy drive installedKnown for oneNo
Storage drive controllerDiffersSATA 3.0GB/sSATA 3.0 Gb/s
Storage drive typeDiffers250 GB 7200 rpm SATA 3.0 Gb/s NCQ, Smart IV160 GB 7200 rpm SATA 3.0 Gb/s NCQ, Smart IV
Diskette driveKnown for oneOptional
Graphicsidentical
On-board graphics cardKnown for oneYes
On-board graphics card modelKnown for oneNot available
Graphics card familyKnown for oneIntel
Network1 differ
Ethernet LANKnown for oneYes
Wi-FiKnown for oneNo
Networking featuresDiffersGigabit NetworkGigabit Ethernet
Ports & interfaces2 differ
HDMI ports quantityKnown for one0
DVI portKnown for oneNo
Firewire (IEEE 1394) portsKnown for one0
Serial ports quantityDiffers10
I/O portsDiffers2 USB 2.0; 1 headphone/line-out; 1 microphone in8 USB 2.0; 1 microphone in; 1 audio in; 1 audio out; 1 DisplayPort; 1 RJ-45; 2 PS/2; 1 VGA
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 x PCI1 x mini PCI
PCI Express x1 slotsKnown for one1
PCI Express x16 slotsKnown for one2
Power3 differ
Power supply typeDiffers240W 85% Efficient - Active PFC135W External 87% High Efficiency Active PFC
Power requirementsDiffers240W power supply – active PFC; 240W 85% efficient power supply – active PFC135W 87% efficient external power supply – active PFC
Power supplyKnown for one135 W
Power consumption (typical)Differs240 W135 W
Designidentical
ErgonomicsKnown for oneTower stand
Internal drive baysKnown for one1 x 2.5"
Chassis typeKnown for oneSFF
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
External drive baysKnown for one1 x 5.25", 1 x 3.5"
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 systemDiffersHDHD 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
Featuresidentical
Manageability featuresKnown for oneEnergy 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 - 3.5-in; 1 – 5.25-in 1 – 3.5-in1 - slimline 1 – 2.5-in

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