Product comparison · 2 pcs/workstations

HP Compaq dc7900 Intel® Core™2 Duo E8400 vs HP dc7900 CMT

101specifications compared
22differ
79identical
62known for one product only

Key differences

The HP dc7900 CMT has 0.16 GHz more processor frequency than the HP Compaq dc7900 Intel® Core™2 Duo E8400 (3.16 GHz vs 3 GHz). The HP dc7900 CMT has 0.5 more CPU multiplier (bus/core ratio) than the HP Compaq dc7900 Intel® Core™2 Duo E8400 (9.5 vs 9). The HP dc7900 CMT has 90 GB more total storage capacity than the HP Compaq dc7900 Intel® Core™2 Duo E8400 (250 GB vs 160 GB). Only the HP Compaq dc7900 Intel® Core™2 Duo E8400 has embedded options available. Processor model: E8400 on the HP Compaq dc7900 Intel® Core™2 Duo E8400, E8500 on the HP dc7900 CMT.

Processor model
- Compaq dc7900 Intel® Core™2 Duo E8400:E8400
- dc7900 CMT:E8500
Processor frequency
- Compaq dc7900 Intel® Core™2 Duo E8400:3 GHz
- dc7900 CMT:3.16 GHz
CPU multiplier (bus/core ratio)
- Compaq dc7900 Intel® Core™2 Duo E8400:9
- dc7900 CMT:9.5
Stepping
- Compaq dc7900 Intel® Core™2 Duo E8400:E0
- dc7900 CMT:C0
Total storage capacity
- Compaq dc7900 Intel® Core™2 Duo E8400:160 GB
- dc7900 CMT:250 GB
Optical drive type
- Compaq dc7900 Intel® Core™2 Duo E8400:DVD-ROM
- dc7900 CMT:DVD±RW
Total HDDs capacity
- Compaq dc7900 Intel® Core™2 Duo E8400:160 GB
- dc7900 CMT:250 GB
HDD interface
- Compaq dc7900 Intel® Core™2 Duo E8400:SATA II
- dc7900 CMT:SATA

Side by side

Differences highlightedShow differences only

Comparison of dc7900, dc7900 CMT
163 specifications	A HP Compaq dc7900 Intel® Core™2 Duo E8400 Model dc7900 View product	B HP dc7900 CMT View product
Processor4 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™2 Duo	Intel® Core™2 Duo
Processor modelDiffers	E8400	E8500
Processor cores	2	2
Processor threads	2	2
Processor frequencyDiffers	3 GHz	3.16 GHz
Processor cache	6 MB	6 MB
Processor cache type	L2	L2
Processor front side bus	1333 MHz	1333 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Processor lithography	45 nm	45 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Core 2 Duo E8000 Series	Intel Core 2 Duo E8000 Series
Processor codename	Wolfdale	Wolfdale
Processor system typeKnown for one	Unknown — not stated by the source	DP
Thermal Design Power (TDP)	65 W	65 W
Tcase	72.4 °C	72.4 °C
Number of processors installedKnown for one	Unknown — not stated by the source	1
Processor socket	LGA 775 (Socket T)	LGA 775 (Socket T)
Number of Processing Die Transistors	410 M	410 M
Processing Die size	107 mm²	107 mm²
CPU multiplier (bus/core ratio)Differs	9	9.5
Processor core voltage (AC)Known for one	Unknown — not stated by the source	0.850/1.3625 V
SteppingDiffers	E0	C0
ECC supported by processor	No	No
Memoryidentical
Internal memory	2 GB	2 GB
Maximum internal memory	16 GB	16 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory layout (slots x size)	2 x 1 GB	2 x 1 GB
Memory clock speed	800 MHz	800 MHz
Memory upgradeKnown for one	Unknown — not stated by the source	16 GB
Memory slotsKnown for one	4x DIMM	Unknown — not stated by the source
Storage4 differ
Total storage capacityDiffers	160 GB	250 GB
Optical drive typeDiffers	DVD-ROM	DVD±RW
Storage media	HDD	HDD
Total HDDs capacityDiffers	160 GB	250 GB
HDD interfaceDiffers	SATA II	SATA
HDD speed	7200 RPM	7200 RPM
Card reader integrated	Yes	Yes
Maximum HDD capacityKnown for one	Unknown — not stated by the source	500 GB
Minimum storage drive spaceKnown for one	Unknown — not stated by the source	80 GB
Floppy drive installedKnown for one	Unknown — not stated by the source	No
Storage drive controllerKnown for one	Unknown — not stated by the source	SATA 3.0Gb/s
Diskette driveKnown for one	Unknown — not stated by the source	Optional
Storage drive typeKnown for one	Unknown — not stated by the source	250 GB
HDD controller typeKnown for one	Unknown — not stated by the source	SATA (7200 rpm)
Number of HDDs supportedKnown for one	1	Unknown — not stated by the source
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
HDD capacityKnown for one	160 GB	Unknown — not stated by the source
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Graphics1 differ
Discrete graphics cardKnown for one	Unknown — not stated by the source	No
On-board graphics card	Yes	Yes
Discrete graphics card model	Not available	Not available
On-board graphics card modelDiffers	Not available	Intel® GMA 4500M
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
On-board graphics card familyKnown for one	Intel® GMA	Unknown — not stated by the source
Performanceidentical
Product type	PC	PC
Motherboard chipset	Intel® Q45	Intel® Q45
Networkidentical
Ethernet LAN	Yes	Yes
Wi-Fi	No	No
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Ethernet LAN data ratesKnown for one	10,100,1000 Mbit/s	Unknown — not stated by the source
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
Ports & interfacesidentical
USB 2.0 ports quantity	8	8
HDMI ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
DVI port	No	No
PS/2 ports quantity	2	2
Firewire (IEEE 1394) portsKnown for one	Unknown — not stated by the source	0
Serial ports quantity	1	1
Parallel ports quantityKnown for one	Unknown — not stated by the source	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
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
DisplayPorts quantityKnown for one	1	Unknown — not stated by the source
Line-outKnown for one	Yes	Unknown — not stated by the source
Line-inKnown for one	Yes	Unknown — not stated by the source
Expansion slots2 differ
PCI Express x1 slotsDiffers	1	2
PCI Express x16 slotsDiffers	2	1
Expansion slotsKnown for one	Unknown — not stated by the source	3 full-height PCI, 1 full-height PCI Express x16, 2 full-height PCI Express x1
Number of 3.5" baysKnown for one	2	Unknown — not stated by the source
PCI slotsKnown for one	1	Unknown — not stated by the source
Power1 differ
Power requirementsKnown for one	Unknown — not stated by the source	90 – 264 / 100 – 240 VAC, 50/60 Hz
Power supplyDiffers	240 W	365 W
Power consumption (typical)Known for one	Unknown — not stated by the source	365 W
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
Design2 differ
Chassis typeDiffers	SFF	Mini Tower
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Cable lock slot typeKnown for one	Unknown — not stated by the source	Kensington
Product colourDiffers	Black	Black, Silver
Country of origin	China	China
Upgrade typeKnown for one	Unknown — not stated by the source	Windows Vista capable
Placement supportedKnown for one	Horizontal	Unknown — not stated by the source
Number of 5.25" baysKnown for one	1	Unknown — not stated by the source
Cooling typeKnown for one	Active	Unknown — not stated by the source
Softwareidentical
Operating system installed	Windows Vista Business	Windows Vista Business
Applications supportedKnown for one	Unknown — not stated by the source	Windows Vista Premium ready
Bundled softwareKnown for one	Unknown — not stated by the source	HP ProtectTools Security Software Suite Version 4.0, HP Power Manager, HP Firefox Virtual Browser, HP Backup & Recovery Manager, HP Insight Diagnostics Software, Computer Setup Utility, Roxio Creator Business 10 or DVD 10 / Easy Media Creator 9.0, Intervideo WinDVD 8 LE, PDF Complete
Driver LANKnown for one	Unknown — not stated by the source	Microsoft Windows Vista, Microsoft Windows XP
Operating system architectureKnown for one	32-bit	Unknown — not stated by the source
Drivers includedKnown for one	Yes	Unknown — not stated by the source
Displayidentical
Display included	No	No
Processor special features3 differ
Embedded options availableDiffers	Yes	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® Wireless Display (Intel® WiDi)	No	No
Processor ARK IDDiffers	33910	33911
Processor codeDiffers	SLB9J	SLAPK
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Thermal Monitoring Technologies	Yes	Yes
Intel® Turbo Boost Technology	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Graphics & IMC lithographyKnown for one	45 nm	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	ADI1884	High Definition Audio
Audio includedKnown for one	Unknown — not stated by the source	Integrated HD audio with ADI1884 codec, internal PC speaker
Operational conditionsidentical
Operating temperature (T-T)	10 - 35 °C	10 - 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%
Non-operating altitudeKnown for one	Unknown — not stated by the source	9144
Weight & dimensions4 differ
WidthDiffers	337 mm	177 mm
DepthDiffers	378 mm	452 mm
HeightDiffers	100 mm	447 mm
WeightDiffers	8.5 kg	11.8 kg
Packaging contentidentical
Remote control includedKnown for one	Unknown — not stated by the source	No
Mouse includedKnown for one	Yes	Unknown — not stated by the source
Keyboard includedKnown for one	Yes	Unknown — not stated by the source
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
Featuresidentical
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
TV tuner integratedKnown for one	Unknown — not stated by the source	No
Drive baysKnown for one	Unknown — not stated by the source	3 external 5.25 inch, 1 external 3.5 inch 2 internal 3.5 inch
Optical driveidentical
Optical drives quantityKnown for one	1	Unknown — not stated by the source
Sustainabilityidentical
Sustainability certificatesKnown for one	EPEAT Gold, ENERGY STAR	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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