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 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 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
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 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
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	6	8
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
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 typeDiffers	IBM	Kensington
Software1 differ
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
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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