Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz vs Lenovo ThinkCentre S51 P4 531 3.0GHz

32specifications compared
13differ
19identical
60known for one product only

Key differences

The Lenovo ThinkCentre S51 P4 531 3.0GHz has 0.25 GB more internal memory than the Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz (0.5 GB vs 0.25 GB). The Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz has 2 GB more maximum internal memory than the Lenovo ThinkCentre S51 P4 531 3.0GHz (4 GB vs 2 GB). The Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz has 40 GB more total storage capacity than the Lenovo ThinkCentre S51 P4 531 3.0GHz (80 GB vs 40 GB). Internal memory type: DDR2-SDRAM on the Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz, DDR-SDRAM on the Lenovo ThinkCentre S51 P4 531 3.0GHz. Networking features: Ethernet/Fast Ethernet on the Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz, Ethernet/Fast Ethernet/Gigabit Ethernet on the Lenovo ThinkCentre S51 P4 531 3.0GHz.

Internal memory
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:0.25 GB
- ThinkCentre S51 P4 531 3.0GHz:0.5 GB
Maximum internal memory
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:4 GB
- ThinkCentre S51 P4 531 3.0GHz:2 GB
Internal memory type
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:DDR2-SDRAM
- ThinkCentre S51 P4 531 3.0GHz:DDR-SDRAM
Total storage capacity
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:80 GB
- ThinkCentre S51 P4 531 3.0GHz:40 GB
USB 2.0 ports quantity
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:6
- ThinkCentre S51 P4 531 3.0GHz:8
Power supply
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:310 W
- ThinkCentre S51 P4 531 3.0GHz:225 W
Chassis type
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:Desktop
- ThinkCentre S51 P4 531 3.0GHz:SFF
Width
- ThinkCentre A51 Pentium 4 630 HT 3.0GHz:442 mm
- ThinkCentre S51 P4 531 3.0GHz:309 mm

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51 Pentium 4 630 HT 3.0GHz, ThinkCentre S51 P4 531 3.0GHz
92 specifications	A Lenovo ThinkCentre A51 Pentium 4 630 HT 3.0GHz View product	B Lenovo ThinkCentre S51 P4 531 3.0GHz View product
Processoridentical
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 cacheKnown for one	2 MB	Unknown — not stated by the source
Processor cache typeKnown for one	L2	Unknown — not stated by the source
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
Memory3 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Maximum internal memoryDiffers	4 GB	2 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR-SDRAM
Storage1 differ
Total storage capacityDiffers	80 GB	40 GB
HDD speedKnown for one	7200 RPM	Unknown — not stated by the source
Storage drive typeKnown for one	SATA	Unknown — not stated by the source
HDD interfaceKnown for one	Unknown — not stated by the source	SATA
Graphicsidentical
Video adapter resolutionKnown for one	2048x1536 16777216 colors	Unknown — not stated by the source
Network1 differ
Networking featuresDiffers	Ethernet/Fast Ethernet	Ethernet/Fast Ethernet/Gigabit Ethernet
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	6	8
Firewire (IEEE 1394) portsKnown for one	0	Unknown — not stated by the source
TV-outKnown for one	No	Unknown — not stated by the source
Serial ports quantityKnown for one	1	Unknown — not stated by the source
Modem (RJ-11) portsKnown for one	0	Unknown — not stated by the source
USB 1.1 ports quantityKnown for one	0	Unknown — not stated by the source
Power1 differ
Power supplyDiffers	310 W	225 W
Design1 differ
Chassis typeDiffers	Desktop	SFF
Softwareidentical
Bundled softwareKnown for one	Unknown — not stated by the source	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Access Program 4.0; IBM Client Sotware; Rescue and Recovery; IBM Director, Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics
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
Weight & dimensions4 differ
WidthDiffers	442 mm	309 mm
DepthDiffers	401 mm	359 mm
HeightDiffers	146 mm	85 mm
WeightDiffers	14 kg	8.5 kg
Other features1 differ
Security featuresDiffers	-Parallel port I/O control -Configuration password -Diskette boot inhibit -Diskette I/O control -Hardfile I/O control -Boot sequence control -Boot without keyboard or mouse -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature	-Boot without keyboard or mouse -Configuration password -Diskette Boot inhibit -U-Bolt anchoring feature -Serial port I/O control -Hard drive I/O control -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Hard disk drive password -Diskette I/O contr

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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