Product comparison · 2 pcs/workstations

HP Compaq dc7900 vs HP Compaq dc7900 Small Form Factor PC

91specifications compared
29differ
62identical
66known for one product only

Key differences

The HP Compaq dc7900 has 2 more processor cores than the HP Compaq dc7900 Small Form Factor PC (4 vs 2). The HP Compaq dc7900 has 2 more processor threads than the HP Compaq dc7900 Small Form Factor PC (4 vs 2). The HP Compaq dc7900 Small Form Factor PC has 0.5 GHz more processor frequency than the HP Compaq dc7900 (3.16 GHz vs 2.66 GHz). Only the HP Compaq dc7900 has card reader integrated. Only the HP Compaq dc7900 has embedded options available.

Processor family
- Compaq dc7900:Intel® Core™2 Quad
- Compaq dc7900 Small Form Factor PC:Intel® Core™2 Duo
Processor model
- Compaq dc7900:Q9400
- Compaq dc7900 Small Form Factor PC:E8500
Processor cores
- Compaq dc7900:4
- Compaq dc7900 Small Form Factor PC:2
Processor threads
- Compaq dc7900:4
- Compaq dc7900 Small Form Factor PC:2
Processor frequency
- Compaq dc7900:2.66 GHz
- Compaq dc7900 Small Form Factor PC:3.16 GHz
Processor codename
- Compaq dc7900:Yorkfield
- Compaq dc7900 Small Form Factor PC:Wolfdale
Thermal Design Power (TDP)
- Compaq dc7900:95 W
- Compaq dc7900 Small Form Factor PC:65 W
Tcase
- Compaq dc7900:71.4 °C
- Compaq dc7900 Small Form Factor PC:72.4 °C

Side by side

Differences highlightedShow differences only

Comparison of Compaq dc7900, Compaq dc7900 Small Form Factor PC
157 specifications	A HP Compaq dc7900 View product	B HP Compaq dc7900 Small Form Factor PC View product
Processor13 differ
Processor familyDiffers	Intel® Core™2 Quad	Intel® Core™2 Duo
Processor modelDiffers	Q9400	E8500
Processor coresDiffers	4	2
Processor threadsDiffers	4	2
Processor frequencyDiffers	2.66 GHz	3.16 GHz
Processor seriesDiffers	Intel Core 2 Quad Q9000 Series for Desktop	Intel Core 2 Duo E8000 Series
Processor codenameDiffers	Yorkfield	Wolfdale
Processor system typeKnown for one	Unknown — not stated by the source	DP
Thermal Design Power (TDP)Differs	95 W	65 W
TcaseDiffers	71.4 °C	72.4 °C
Number of Processing Die TransistorsDiffers	456 M	410 M
Processing Die sizeDiffers	164 mm²	107 mm²
CPU multiplier (bus/core ratio)Differs	8	9.5
Processor core voltage (AC)Known for one	Unknown — not stated by the source	0.850/1.3625 V
SteppingDiffers	R0	C0
Memoryidentical
Minimum RAMKnown for one	Unknown — not stated by the source	512 MB
Standard memory capacityKnown for one	Unknown — not stated by the source	2 MB
Storage3 differ
Total storage capacityDiffers	500 GB	160 GB
Optical drive typeDiffers	DVD Super Multi	DVD±RW
Card reader integratedDiffers	Yes	No
Storage drive controllerKnown for one	Unknown — not stated by the source	SATA 3.0GB/s with NCQ and Smart IV
Disk subsystem controllerKnown for one	Unknown — not stated by the source	SATA 3.0Gb/s
Diskette driveKnown for one	Unknown — not stated by the source	Optional 1.44 MB Diskette Drive, HP Media Card Reader 16-in-1 (5.25" with PCI)
Storage drive typeKnown for one	Unknown — not stated by the source	2 x 160 GB with optional dual drive RAID + Sata 2nd Cable
HDD noteKnown for one	Unknown — not stated by the source	RAID 1 Mirrored Array configuration
Storage mediaKnown for one	HDD	Unknown — not stated by the source
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
Graphicsidentical
Video card featuresKnown for one	Unknown — not stated by the source	3D/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-disp
Video adapter, busKnown for one	Unknown — not stated by the source	PCI Express x16
Video card resolutionKnown for one	Unknown — not stated by the source	Maximum Vertical Refresh Rate: 85 Hz at up to 1920x1440, 75 Hz at 2048x1536
Discrete graphics cardKnown for one	Yes	Unknown — not stated by the source
On-board graphics cardKnown for one	No	Unknown — not stated by the source
On-board graphics card modelKnown for one	Not available	Unknown — not stated by the source
Networkidentical
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Ethernet LANKnown for one	Yes	Unknown — not stated by the source
Wi-FiKnown for one	No	Unknown — not stated by the source
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers	6	8
Parallel ports quantityDiffers	1	0
I/O portsKnown for one	Unknown — not stated by the source	Rear: 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 port
Rear portsKnown for one	Unknown — not stated by the source	6 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 one	Unknown — not stated by the source	6 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)
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityKnown for one	0	Unknown — not stated by the source
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityKnown for one	0	Unknown — not stated by the source
Thunderbolt 3 ports quantityKnown for one	0	Unknown — not stated by the source
DisplayPorts quantityKnown for one	1	Unknown — not stated by the source
HDMI ports quantityKnown for one	0	Unknown — not stated by the source
DVI portKnown for one	No	Unknown — not stated by the source
DC-in jackKnown for one	Yes	Unknown — not stated by the source
Expansion slotsidentical
Expansion slotsKnown for one	Unknown — not stated by the source	1 low-profile PCI, 2 low-profile PCI Express x16, 1 low-profile PCI Express x1
PCI Express x16 slotsKnown for one	1	Unknown — not stated by the source
Power2 differ
Power supply typeKnown for one	Unknown — not stated by the source	240W 85% Efficient - Active PFC
Power requirementsKnown for one	Unknown — not stated by the source	Input 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 Powe
Power supplyDiffers	365 W	240 W
Power consumption (typical)Differs	365 W	240 W
Power managementKnown for one	Unknown — not stated by the source	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 Power Supply: 3.5 A; Current Leakage (NFPA 99): < 275 µA; System Heat Dissipation: Typical 198 btu/
Power supply input voltageKnown for one	100 - 240 V	Unknown — not stated by the source
Power supply input frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Design1 differ
Chassis typeDiffers	Mini Tower	SFF
Upgrade typeKnown for one	Unknown — not stated by the source	Windows Vista capable
Placement supportedKnown for one	Vertical	Unknown — not stated by the source
Cable lock slotKnown for one	Yes	Unknown — not stated by the source
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Product colourKnown for one	Black	Unknown — not stated by the source
Softwareidentical
Applications supportedKnown for one	Unknown — not stated by the source	Windows Vista Premium ready
Compatible operating systemsKnown for one	Unknown — not stated by the source	Genuine Windows XP Professional; Genuine Windows XP Home
Bundled softwareKnown for one	Unknown — not stated by the source	On some models only (not included with FreeDOS): HP ProtectTools Security Software Suite Version 4.0, HP Power Manager, HP Firefox Virtual Browser, HP Backup and Recovery Manager, HP Insight Diagnostics Software (available via HP Backup and Recovery Manager), Computer Setup Utility, McAfee AntiVirus
Driver LANKnown for one	Unknown — not stated by the source	Microsoft Windows Vista, Microsoft Windows XP
Processor special features3 differ
Embedded options availableDiffers	Yes	No
Processor ARK IDDiffers	35365	33911
Processor codeDiffers	SLB6B	SLAPK
Audio1 differ
Audio systemDiffers	HD	High Definition Audio
Audio includedKnown for one	Unknown — not stated by the source	Integrated HD audio with ADI1884 codec, internal PC speaker
Operational conditionsidentical
Relative humidityKnown for one	Unknown — not stated by the source	10 - 90%
Non-operating altitudeKnown for one	Unknown — not stated by the source	9144
Non-operating relative humidity (non-condensing)Known for one	Unknown — not stated by the source	5 - 90%
Weight & dimensions4 differ
WidthDiffers	177 mm	337 mm
DepthDiffers	452 mm	378 mm
HeightDiffers	447 mm	100 mm
WeightDiffers	11.8 kg	8.5 kg
Size (imperial)Known for one	Unknown — not stated by the source	33.8 cm (13.3")
Weight (imperial)Known for one	Unknown — not stated by the source	18.75 lb
Packaging dataidentical
Package weightKnown for one	Unknown — not stated by the source	7 kg
Certificatesidentical
CertificationKnown for one	Unknown — not stated by the source	ENERGY STAR qualified; EPEAT Gold; 85% efficient power supply
Keyboardidentical
Pointing deviceKnown for one	Unknown — not stated by the source	HP PS/2 2-Button Optical Scroll Mouse
Keyboard typeKnown for one	Unknown — not stated by the source	HP PS/2 Standard Keyboard
Multimediaidentical
MultimediaKnown for one	Unknown — not stated by the source	Integrated High Definition audio with ADI1884 codec (all ports are stereo)
Featuresidentical
Manageability featuresKnown for one	Unknown — not stated by the source	RAID 1 Mirrored Array. Energy efficient, space saving design. Long, stable lifecycle.
Security management descriptionKnown for one	Unknown — not stated by the source	Integrated 1.2 TPM Embedded Security Chip (except for Russia), HP Business PC Security Lock, HP USB Smartcard Keyboard
Other featuresidentical
Security featuresKnown for one	Unknown — not stated by the source	Kensington Lock, Solenoid Hood Lock / Sensor, HP 2008 (SFF) Wall Mount/Security Sleeve
Drive baysKnown for one	Unknown — not stated by the source	1 external 5.25 inch, 1 external 3.5 inch 1 internal 3.5 inch
Packaging contentidentical
Mouse includedKnown for one	Yes	Unknown — not stated by the source
Keyboard includedKnown for one	Yes	Unknown — not stated by the source
AC adapter includedKnown for one	Yes	Unknown — not stated by the source

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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