Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51 P4 630 HT 3.0GHz vs Lenovo ThinkCentre E50 Celeron D 331 2.66GHz

33specifications compared
16differ
17identical
53known for one product only

Key differences

The Lenovo ThinkCentre A51 P4 630 HT 3.0GHz has 0.34 GHz more processor frequency than the Lenovo ThinkCentre E50 Celeron D 331 2.66GHz (3 GHz vs 2.66 GHz). The Lenovo ThinkCentre A51 P4 630 HT 3.0GHz has 267 MHz more processor front side bus than the Lenovo ThinkCentre E50 Celeron D 331 2.66GHz (800 MHz vs 533 MHz). The Lenovo ThinkCentre A51 P4 630 HT 3.0GHz has 2 GB more maximum internal memory than the Lenovo ThinkCentre E50 Celeron D 331 2.66GHz (4 GB vs 2 GB). Processor family: Intel® Pentium® 4 on the Lenovo ThinkCentre A51 P4 630 HT 3.0GHz, Intel® Celeron® on the Lenovo ThinkCentre E50 Celeron D 331 2.66GHz. Internal memory type: DDR2-SDRAM on the Lenovo ThinkCentre A51 P4 630 HT 3.0GHz, DDR-SDRAM on the Lenovo ThinkCentre E50 Celeron D 331 2.66GHz.

Processor family
- ThinkCentre A51 P4 630 HT 3.0GHz:Intel® Pentium® 4
- ThinkCentre E50 Celeron D 331 2.66GHz:Intel® Celeron®
Processor frequency
- ThinkCentre A51 P4 630 HT 3.0GHz:3 GHz
- ThinkCentre E50 Celeron D 331 2.66GHz:2.66 GHz
Processor front side bus
- ThinkCentre A51 P4 630 HT 3.0GHz:800 MHz
- ThinkCentre E50 Celeron D 331 2.66GHz:533 MHz
Maximum internal memory
- ThinkCentre A51 P4 630 HT 3.0GHz:4 GB
- ThinkCentre E50 Celeron D 331 2.66GHz:2 GB
Internal memory type
- ThinkCentre A51 P4 630 HT 3.0GHz:DDR2-SDRAM
- ThinkCentre E50 Celeron D 331 2.66GHz:DDR-SDRAM
Discrete graphics card model
- ThinkCentre A51 P4 630 HT 3.0GHz:Intel® GMA 900
- ThinkCentre E50 Celeron D 331 2.66GHz:MiRage
Video adapter, bus
- ThinkCentre A51 P4 630 HT 3.0GHz:PCI Express
- ThinkCentre E50 Celeron D 331 2.66GHz:Direct AGP
Power supply
- ThinkCentre A51 P4 630 HT 3.0GHz:310 W
- ThinkCentre E50 Celeron D 331 2.66GHz:180 W

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51 P4 630 HT 3.0GHz, ThinkCentre E50 Celeron D 331 2.66GHz
86 specifications	A Lenovo ThinkCentre A51 P4 630 HT 3.0GHz View product	B Lenovo ThinkCentre E50 Celeron D 331 2.66GHz View product
Processor3 differ
Processor familyDiffers	Intel® Pentium® 4	Intel® Celeron®
Processor modelKnown for one	630	Unknown — not stated by the source
Processor coresKnown for one	1	Unknown — not stated by the source
Processor threadsKnown for one	2	Unknown — not stated by the source
Processor frequencyDiffers	3 GHz	2.66 GHz
Processor cacheKnown for one	2 MB	Unknown — not stated by the source
Processor cache typeKnown for one	L2	Unknown — not stated by the source
Processor front side busDiffers	800 MHz	533 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	90 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 4 600 Series supporting Hyper-Threading Technology	Unknown — not stated by the source
Processor codenameKnown for one	Prescott	Unknown — not stated by the source
Thermal Design Power (TDP)Known for one	84 W	Unknown — not stated by the source
TcaseKnown for one	66.6 °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	169 M	Unknown — not stated by the source
Processing Die sizeKnown for one	135 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	15	Unknown — not stated by the source
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Memory2 differ
Maximum internal memoryDiffers	4 GB	2 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR-SDRAM
Storageidentical
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
Storage drive typeKnown for one	Unknown — not stated by the source	ATA-100 (Enhanced IDE)
Graphics2 differ
Discrete graphics card modelDiffers	Intel® GMA 900	MiRage
Video adapter, busDiffers	PCI Express	Direct AGP
Power1 differ
Power supplyDiffers	310 W	180 W
Design1 differ
Chassis typeDiffers	Tower	Small Desktop
Software1 differ
Bundled softwareDiffers	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium edition (license), Access program, Norton AntiVirus 2005 with 90 days of virus definition upgrades, PC Doctor diagnostics, ThinkVantage Rescue and Recovery with Rapid Restore	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium edition (license), Access program, Norton AntiVirus 2005 with 90 days of virus definition upgrades, PC Doctor diagnostics, ThinkVantage Rescue and Recovery
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	No	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	No	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
Processor ARK IDKnown for one	27478	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	Yes	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	SoundMAX Cadenza	AC-97
Weight & dimensions4 differ
WidthDiffers	178 mm	325 mm
DepthDiffers	450 mm	410 mm
HeightDiffers	430 mm	107 mm
WeightDiffers	12.5 kg	9.2 kg
Other features1 differ
Security featuresDiffers	-Boot without keyboard or mouse -Boot sequence control -Configuration password -Diskette boot inhibit -Diskette I/O control -Hardfile I/O control -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature	-Boot sequence control -Boot without keyboard or mouse -Configuration password -Diskette boot inhibit -Diskette I/O control -Hardfile I/O control -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature
Networkidentical
Networking featuresKnown for one	Unknown — not stated by the source	Ethernet/Fast Ethernet

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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