Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A55 vs Lenovo ThinkCentre M55p Small Desktop, FR

34specifications compared
16differ
18identical
65known for one product only

Key differences

Processor family
- ThinkCentre A55:Intel® Pentium® D
- ThinkCentre M55p Small Desktop, FR:Intel® Core™2 Duo
Processor frequency
- ThinkCentre A55:2.8 GHz
- ThinkCentre M55p Small Desktop, FR:1.86 GHz
Processor cache
- ThinkCentre A55:4 MB
- ThinkCentre M55p Small Desktop, FR:2 MB
Processor front side bus
- ThinkCentre A55:800 MHz
- ThinkCentre M55p Small Desktop, FR:1066 MHz
Internal memory
- ThinkCentre A55:0.5 GB
- ThinkCentre M55p Small Desktop, FR:1 GB
Total storage capacity
- ThinkCentre A55:160 GB
- ThinkCentre M55p Small Desktop, FR:80 GB
USB 2.0 ports quantity
- ThinkCentre A55:6
- ThinkCentre M55p Small Desktop, FR:8
Power supply
- ThinkCentre A55:280 W
- ThinkCentre M55p Small Desktop, FR:225 W

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A55, ThinkCentre M55p Small Desktop, FR
99 specifications	A Lenovo ThinkCentre A55 View product	B Lenovo ThinkCentre M55p Small Desktop, FR View product
Processor4 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Pentium® D	Intel® Core™2 Duo
Processor modelKnown for one	915	Unknown — not stated by the source
Processor coresKnown for one	2	Unknown — not stated by the source
Processor threadsKnown for one	2	Unknown — not stated by the source
Processor frequencyDiffers	2.8 GHz	1.86 GHz
Processor cacheDiffers	4 MB	2 MB
Processor cache type	L2	L2
Processor front side busDiffers	800 MHz	1066 MHz
Bus typeKnown for one	FSB	Unknown — not stated by the source
FSB ParityKnown for one	No	Unknown — not stated by the source
Processor lithographyKnown for one	65 nm	Unknown — not stated by the source
Processor operating modesKnown for one	64-bit	Unknown — not stated by the source
Processor seriesKnown for one	Intel Pentium D 900 Series	Unknown — not stated by the source
Processor codenameKnown for one	Presler	Unknown — not stated by the source
Thermal Design Power (TDP)Known for one	95 W	Unknown — not stated by the source
TcaseKnown for one	63.4 °C	Unknown — not stated by the source
Processor socketKnown for one	LGA 775 (Socket T)	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	376 M	Unknown — not stated by the source
Processing Die sizeKnown for one	162 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	14	Unknown — not stated by the source
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Number of processors installedKnown for one	Unknown — not stated by the source	1
Memory1 differ
Internal memoryDiffers	0.5 GB	1 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Memory slotsKnown for one	2x DIMM	Unknown — not stated by the source
Memory layout (slots x size)Known for one	Unknown — not stated by the source	1 x 1 GB
Storage1 differ
Total storage capacityDiffers	160 GB	80 GB
Optical drive type	DVD-ROM	DVD-ROM
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Graphicsidentical
Discrete graphics card model	Intel® GMA 3000	Intel® GMA 3000
Performanceidentical
Product type	PC	PC
Optical driveidentical
CD read speedKnown for one	48x	Unknown — not stated by the source
CD write speedKnown for one	48x	Unknown — not stated by the source
CD rewrite speedKnown for one	32x	Unknown — not stated by the source
DVD read speedKnown for one	16x	Unknown — not stated by the source
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
PS/2 ports quantityKnown for one	2	Unknown — not stated by the source
Serial ports quantityKnown for one	1	Unknown — not stated by the source
Parallel ports quantity	1	1
Line-outKnown for one	Unknown — not stated by the source	Yes
Line-inKnown for one	Unknown — not stated by the source	Yes
Power1 differ
Power supplyDiffers	280 W	225 W
Design2 differ
Chassis typeDiffers	Tower	SFF
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	IBM	Kensington
Software1 differ
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled softwareDiffers	Adobe Acrobat Reader, Diskeeper Lite from Diskeeper, Google Desktop, Google Toolbar, Lotus Notes Stand-alone Client, Lotus SmartSuite Millennium edition, PC Doctor diagnostics, Picasa - Google, Symantec Client Security (OEM), ThinkVantage Client Security Software, ThinkVantage Productivity Center, T	Adobe Acrobat Reader Diskeeper Lite PC Doctor Google sft. ThinkVantage sft.
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows 2000/XP/Vista
Displayidentical
Display included	No	No
Processor special featuresidentical
Embedded options availableKnown for one	No	Unknown — not stated by the source
Enhanced Intel SpeedStep TechnologyKnown for one	Yes	Unknown — not stated by the source
Execute Disable BitKnown for one	Yes	Unknown — not stated by the source
Idle StatesKnown for one	Yes	Unknown — not stated by the source
Intel 64Known for one	Yes	Unknown — not stated by the source
Intel Clear Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel Demand Based SwitchingKnown for one	No	Unknown — not stated by the source
Intel Dual Display Capable TechnologyKnown for one	No	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	Yes	Unknown — not stated by the source
Intel FDI TechnologyKnown for one	No	Unknown — not stated by the source
Intel Fast Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Flex Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
Intel Trusted Execution TechnologyKnown for one	No	Unknown — not stated by the source
Intel VT-x with Extended Page Tables (EPT)Known for one	No	Unknown — not stated by the source
Intel Virtualization Technology (VT-x)Known for one	No	Unknown — not stated by the source
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	No	Unknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)Known for one	No	Unknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	No	Unknown — not stated by the source
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	No	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Insider™Known for one	No	Unknown — not stated by the source
Intel® Wireless Display (Intel® WiDi)Known for one	No	Unknown — not stated by the source
Physical Address Extension (PAE)Known for one	32 bit	Unknown — not stated by the source
Processor ARK IDKnown for one	27515	Unknown — not stated by the source
Processor package sizeKnown for one	37.5 x 37.5 mm	Unknown — not stated by the source
Thermal Monitoring TechnologiesKnown for one	No	Unknown — not stated by the source
Intel® Turbo Boost TechnologyKnown for one	No	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	No	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Known for one	No	Unknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for one	No	Unknown — not stated by the source
Conflict-Free processorKnown for one	No	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	ADI 1986 A	ADI 1983 HD
Weight & dimensions4 differ
WidthDiffers	175 mm	310 mm
DepthDiffers	440 mm	87.5 mm
HeightDiffers	402 mm	358 mm
WeightDiffers	11 kg	8.5 kg
Expansion slotsidentical
Expansion slotsKnown for one	Unknown — not stated by the source	1x PCI Express 1X 1x PCI
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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