Product comparison · 2 pcs/workstations

Acer Extensa E261 vs Lenovo ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES

76specifications compared
22differ
54identical
15known for one product only

Key differences

Processor family
- Extensa E261:Intel® Core™2 Duo
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:Intel® Pentium® D
Processor model
- Extensa E261:E4400
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:925
Processor frequency
- Extensa E261:2 GHz
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:3 GHz
Processor cache
- Extensa E261:2 MB
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:4 MB
Processor codename
- Extensa E261:Conroe
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:Presler
Thermal Design Power (TDP)
- Extensa E261:65 W
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:95 W
Tcase
- Extensa E261:61.4 °C
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:63.4 °C
Number of Processing Die Transistors
- Extensa E261:167 M
- ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES:376 M

Side by side

Differences highlightedShow differences only

Comparison of Extensa E261, ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES
91 specifications	A Acer Extensa E261 View product	B Lenovo ThinkCentre M55 Ultra Small Desktop (8795-B4G), ES View product
Processor11 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™2 Duo	Intel® Pentium® D
Processor modelDiffers	E4400	925
Processor cores	2	2
Processor threads	2	2
Processor frequencyDiffers	2 GHz	3 GHz
Processor cacheDiffers	2 MB	4 MB
Processor cache type	L2	L2
Processor front side bus	800 MHz	800 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 Pentium D 900 Series
Processor codenameDiffers	Conroe	Presler
Thermal Design Power (TDP)Differs	65 W	95 W
TcaseDiffers	61.4 °C	63.4 °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 TransistorsDiffers	167 M	376 M
Processing Die sizeDiffers	111 mm²	162 mm²
CPU multiplier (bus/core ratio)Differs	10	15
ECC supported by processor	No	No
Memoryidentical
Internal memory	1 GB	1 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory layout (slots x size)Known for one	Unknown — not stated by the source	1 x 1 GB
Storage1 differ
Total storage capacity	160 GB	160 GB
Optical drive typeDiffers	DVD±RW	DVD-RW
HDD interfaceKnown for one	Unknown — not stated by the source	SATA
HDD speed	7200 RPM	7200 RPM
Graphics1 differ
Discrete graphics card modelDiffers	MiRage 3	Intel® GMA 3000
Performanceidentical
Product type	PC	PC
Networkidentical
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	6	8
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
Parallel ports quantity	1	1
Serial ports quantityKnown for one	1	Unknown — not stated by the source
Poweridentical
Power availabilityKnown for one	Unknown — not stated by the source	225 W
Power supplyKnown for one	250 W	Unknown — not stated by the source
Designidentical
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
Chassis typeKnown for one	Tower	Unknown — not stated by the source
Software2 differ
Operating system installedDiffers	Windows XP Professional	Windows Vista Business
Bundled softwareDiffers	Acer Empowering Technology Lite, LANScope Lite, Norton AntiVirus, Adobe Reader, Cyberlink PowerDVD	Yes
Displayidentical
Display included	No	No
Processor special features2 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 Technology	No	No
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)	No	No
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
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Processor ARK IDDiffers	29753	27517
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Thermal Monitoring TechnologiesDiffers	Yes	No
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
Processor codeKnown for one	E4400	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	Realtek ALC888	ADI 1983 HD
Weight & dimensions3 differ
WidthDiffers	183 mm	275 mm
DepthDiffers	455 mm	87.5 mm
HeightDiffers	370 mm	275 mm
WeightKnown for one	Unknown — not stated by the source	6.4 kg
Packaging contentidentical
Mouse includedKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
HDD user passwordKnown for one	Unknown — not stated by the source	Yes
Intel segment taggingKnown for one	Unknown — not stated by the source	Enterprise, Professional

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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