Product comparison · 2 pcs/workstations

Acer Extensa E261 vs Lenovo ThinkCentre M55p Tower (8811DEG), SP

74specifications compared
17differ
57identical
17known for one product only

Key differences

Processor model
- Extensa E261:E4400
- ThinkCentre M55p Tower (8811DEG), SP:E6400
Processor frequency
- Extensa E261:2 GHz
- ThinkCentre M55p Tower (8811DEG), SP:2.13 GHz
Processor front side bus
- Extensa E261:800 MHz
- ThinkCentre M55p Tower (8811DEG), SP:1066 MHz
CPU multiplier (bus/core ratio)
- Extensa E261:10
- ThinkCentre M55p Tower (8811DEG), SP:8
Total storage capacity
- Extensa E261:160 GB
- ThinkCentre M55p Tower (8811DEG), SP:80 GB
Optical drive type
- Extensa E261:DVD±RW
- ThinkCentre M55p Tower (8811DEG), SP:DVD-ROM
Discrete graphics card model
- Extensa E261:MiRage 3
- ThinkCentre M55p Tower (8811DEG), SP:Intel® GMA 3000
USB 2.0 ports quantity
- Extensa E261:6
- ThinkCentre M55p Tower (8811DEG), SP:10

Side by side

Differences highlightedShow differences only

Comparison of Extensa E261, ThinkCentre M55p Tower (8811DEG), SP
91 specifications	A Acer Extensa E261 View product	B Lenovo ThinkCentre M55p Tower (8811DEG), SP View product
Processor5 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™2 Duo	Intel® Core™2 Duo
Processor modelDiffers	E4400	E6400
Processor cores	2	2
Processor threads	2	2
Processor frequencyDiffers	2 GHz	2.13 GHz
Processor cache	2 MB	2 MB
Processor cache type	L2	L2
Processor front side busDiffers	800 MHz	1066 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
Tcase	61.4 °C	61.4 °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	167 M	167 M
Processing Die size	111 mm²	111 mm²
CPU multiplier (bus/core ratio)Differs	10	8
ECC supported by processor	No	No
Memoryidentical
Internal memory	1 GB	1 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
Maximum internal memoryKnown for one	4 GB	Unknown — not stated by the source
Storage2 differ
Total storage capacityDiffers	160 GB	80 GB
Optical drive typeDiffers	DVD±RW	DVD-ROM
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	10
Ethernet LAN (RJ-45) ports	1	1
Line-outKnown for one	Unknown — not stated by the source	Yes
Line-inKnown for one	Unknown — not stated by the source	Yes
VGA (D-Sub) ports quantity	1	1
Parallel ports quantity	1	1
Headphone outputsKnown for one	1	Unknown — not stated by the source
Microphone inKnown for one	Yes	Unknown — not stated by the source
Serial ports quantityKnown for one	1	Unknown — not stated by the source
Expansion slotsidentical
Expansion slotsKnown for one	Unknown — not stated by the source	1x PCI Express 1X 1x PCI Express 16X 2x PCI
Power1 differ
Power supplyDiffers	250 W	310 W
Designidentical
Chassis type	Tower	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
Softwareidentical
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled softwareKnown for one	Acer Empowering Technology Lite, LANScope Lite, Norton AntiVirus, Adobe Reader, Cyberlink PowerDVD	Unknown — not stated by the source
Displayidentical
Display included	No	No
Processor special features3 differ
Embedded options availableDiffers	No	Yes
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)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	29753	27249
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
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	178 mm
DepthDiffers	455 mm	450 mm
HeightDiffers	370 mm	432 mm
WeightKnown for one	Unknown — not stated by the source	12.5 kg
Packaging contentidentical
Mouse includedKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
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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