Product comparison · 2 pcs/workstations

HP Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC vs HP Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC

112specifications compared
44differ
68identical
17known for one product only

Key differences

Processor model
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:E4500
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:E6550
Processor frequency
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:2.2 GHz
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:2.33 GHz
Processor cache
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:2 MB
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:4 MB
Processor front side bus
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:800 MHz
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:1333 MHz
Tcase
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:73.3 °C
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:72 °C
Number of Processing Die Transistors
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:167 M
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:291 M
Processing Die size
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:111 mm²
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:143 mm²
CPU multiplier (bus/core ratio)
- Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC:11
- Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC:7

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Differences highlightedShow differences only

Comparison of Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC, Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC
129 specifications	A HP Compaq dc7800 Intel Core™2 Duo Processor E4500 1G/160G DVD+/-RW WXP Pro Small Form Factor PC View product	B HP Compaq dx7400 Intel Core™2 Duo Processor E6550 1G/160G DVD-ROM FreeDOS Microtower PC View product
Processor10 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™2 Duo	Intel® Core™2 Duo
Processor modelDiffers	E4500	E6550
Processor cores	2	2
Processor threads	2	2
Processor frequencyDiffers	2.2 GHz	2.33 GHz
Processor cacheDiffers	2 MB	4 MB
Processor cache type	L2	L2
Processor front side busDiffers	800 MHz	1333 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Processor lithography	65 nm	65 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core 2 Duo E4000 Series	Intel Core 2 Duo E6000 Series
Processor codename	Conroe	Conroe
Thermal Design Power (TDP)	65 W	65 W
TcaseDiffers	73.3 °C	72 °C
Processor socket	LGA 775 (Socket T)	LGA 775 (Socket T)
Number of Processing Die TransistorsDiffers	167 M	291 M
Processing Die sizeDiffers	111 mm²	143 mm²
CPU multiplier (bus/core ratio)Differs	11	7
SteppingDiffers	M0	G0
ECC supported by processor	No	No
Processor core voltage (AC)Known for one	0.85 - 1.5 V	Unknown — not stated by the source
Cache externalKnown for one	2048 KB	Unknown — not stated by the source
Memoryidentical
Internal memory	1 GB	1 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory slotsKnown for one	2x SO-DIMM	Unknown — not stated by the source
Storage3 differ
Total storage capacityDiffers	160 GB	250 GB
Optical drive type	DVD Super Multi	DVD Super Multi
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Storage drive controllerDiffers	SATA 3.0Gb/s NCQ SMART VI	SATA 3.0Gb/s NCQ SMART IV
Disk subsystem controller	SATA 3.0Gb/s	SATA 3.0Gb/s
Diskette drive	Optional	Optional
Storage drive typeDiffers	160 GB	250 GB
Graphics1 differ
Discrete graphics card model	Intel® GMA 3100	Intel® GMA 3100
Graphics card RAMDAC	400 MHz	400 MHz
Maximum graphics card memory	0.256 GB	0.256 GB
Graphics card Open GL supportKnown for one	Unknown — not stated by the source	Yes
Video adapter resolutionKnown for one	Unknown — not stated by the source	2048x1536
Video card features	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; 400 MHz Controller Clock Speed; Overlay Planes: Single overlay support with 5x3 filtering; Maximum Color	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; 400 MHz Controller Clock Speed; Overlay Planes: Single overlay support with 5x3 filtering; Maximum Color
Video adapter, bus	PCI Express x16	PCI Express x16
Video card resolutionDiffers	Maximum Vertical Refresh Rate: 85 Hz at up to 1920x1440, 75 Hz at 2048x1536	Maximum Vertical Refresh Rate: 85 Hz at up to 1920x1440, 85 Hz at 2048x1536
Performanceidentical
Product type	PC	PC
Acoustic power emissionsKnown for one	Unknown — not stated by the source	IDLE: LWAd = 4.3 Bels; FIXED DISK: LWAd = 4.8 Bels; OPTICAL DRIVE: LWAd = 5.2 Bels
Network2 differ
Modem typeDiffers	No	Agere 56K PCI
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Networking featuresDiffers	Intel 82566DM Gigabit	NetXtreme Gigabit Ethernet
Ports & interfaces2 differ
USB 2.0 ports quantity	6	6
Ethernet LAN (RJ-45) ports	1	1
Headphone outputsKnown for one	Unknown — not stated by the source	1
Microphone inKnown for one	Unknown — not stated by the source	Yes
VGA (D-Sub) ports quantity	1	1
PS/2 ports quantity	2	2
Serial ports quantityKnown for one	Unknown — not stated by the source	1
Parallel ports quantityKnown for one	Unknown — not stated by the source	1
I/O portsDiffers	Rear: 6 USB 2.0, 1 serial port, 1 optional serial port, 1 parallel port, 2 PS/2, 1 RJ-45, 1 VGA, audio in/out; Front: 2 USB 2.0, audio ports	Rear: 6 USB 2.0, 1 serial port, 1 optional second serial port, 1 parallel port, 2 PS/2, 1 RJ-45, 1 VGA, audio in/out, Mic In, Front: 2 USB 2.0, audio ports
Front connectionsDiffers	2 x USB	2 x USB 2.0
DVI portKnown for one	Yes	Unknown — not stated by the source
Expansion slots1 differ
Expansion slotsDiffers	1 low-profile PCI, 2 full-height PCI (optional), 1 low-profile PCI Express x16, 2 low-profile PCI Express x1	1 x PCI 2.3 2 x PCI Express x1 1 x PCI Express x16
Power3 differ
Power requirementsDiffers	Input voltage 90 – 264 / 100 – 240 VAC, 50/60 Hz, 47 – 63 Hz, active PFC (80% 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; Rated Input Current 80 Plu	Input voltage 90 – 140 / 100 – 127 VAC, 50/60 Hz, 47 – 63 Hz, passive PFC Passive Power Factor Correction (PFC) - with line switch set to 230 V - No PFC in 115 V line switch position; 90 to 140 VAC, or 180 to 264 VAC operating voltage range; 100 to 127 VAC, or 200 to 240 VAC rated voltage range; 50-
Power consumption (typical)Differs	240 W	300 W
Power managementDiffers	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; Rated Input Current 80 Plus: 3.5 A; Current Leakage (NFPA 99): < 275 µA; System Heat Dissipation: Typical 198 btu/hr (50	No
Power supply input frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Design3 differ
Chassis typeDiffers	SFF	Micro Tower
ErgonomicsKnown for one	Unknown — not stated by the source	ANSI HFS 100, ISO 9241-4 / TUVGS
External drive baysDiffers	1 x Slimline	2 x 5.25", 1 x 3.5"
Internal drive baysDiffers	1 x 3.5"	2 x 3.5"
Country of origin	China	China
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
Software2 differ
Operating system installedDiffers	Windows Vista Business	Windows XP Professional
Bundled softwareDiffers	HP Total Care Advisor, InterVideo WinDVD 5.0, Microsoft Office 2007 Small Business, Microsoft Internet Explorer / Google Toolbar	Microsoft Office 2007 Basic, Microsoft Office 2007 Small Business, Microsoft Office 2007 Professional
Driver LANKnown for one	Microsoft Windows Vista, Microsoft Windows XP, Microsoft Windows 2000	Unknown — not stated by the source
Displayidentical
Display included	No	No
Processor special features4 differ
Embedded options available	No	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 TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)Differs	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
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	30781	30783
Processor codeDiffers	SLA95	SLA9X
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
Audio2 differ
Audio systemDiffers	ADI1884	Realtek ALC888
Audio includedDiffers	Integrated High Definition audio with ADI1884 codec, 3D audio compliant with AC'97 Rev. 2.3, internal PC speaker	Integrated High Definition audio with Realtek ALC888 codec, 3D audio compliant with AC'97 Rev. 2.3, internal PC speaker
Operational conditions2 differ
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)Differs	5 - 95%	10 - 95%
Relative humidity	10 - 90%	10 - 90%
Non-operating altitude	9144	9144
Non-operating relative humidity (non-condensing)Differs	5 - 90%	10 - 95%
Weight & dimensions4 differ
WidthDiffers	337 mm	163 mm
DepthDiffers	378 mm	458 mm
HeightDiffers	100 mm	25 mm
WeightDiffers	8.5 kg	9.6 kg
Keyboard2 differ
Pointing deviceDiffers	HP PS/2 2-Button Optical Scroll Mouse HP PS/2 2-Button Optical Scroll Mouse or HP USB 2-Button Optical Scroll Mouse	PS/2, USB
Keyboard typeDiffers	HP PS/2 HP Standard Keyboard (PS/2 or USB) or HP USB Smartcard Keyboard	HP PS/2 HP Standard (PS/2, USB)
Features1 differ
Security management descriptionDiffers	Integrated 1.2 TPM Embedded Security Chip (except for Russia), HP Business PC Security Lock, HP USB Biometric Fingerprint Reader	Padlock loop, Kensington Lock Support
Other features2 differ
Security featuresDiffers	Kensington Lock, Solenoid Hood Lock / Sensor	HP Business security lock kit optional
Drive baysDiffers	1 internal 3.5 inch 1 external 5.25 inch, 1 external 3.5 inch	2 internal 3.5 inch 2 external 5.25 inch, 1 external 3.5 inch
UNSPSC-code	43211507	43211507

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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