Product comparison · 2 pcs/workstations

Lenovo 3000 J100 Intel Pentium 4 640 vs Lenovo ThinkCentre A51 P4 531 HT 3.0GHz

32specifications compared
15differ
17identical
64known for one product only

Key differences

Processor frequency
- 3000 J100 Intel Pentium 4 640:3.2 GHz
- ThinkCentre A51 P4 531 HT 3.0GHz:3 GHz
Internal memory
- 3000 J100 Intel Pentium 4 640:1 GB
- ThinkCentre A51 P4 531 HT 3.0GHz:0.25 GB
Maximum internal memory
- 3000 J100 Intel Pentium 4 640:2 GB
- ThinkCentre A51 P4 531 HT 3.0GHz:4 GB
Internal memory type
- 3000 J100 Intel Pentium 4 640:DDR-SDRAM
- ThinkCentre A51 P4 531 HT 3.0GHz:DDR2-SDRAM
Total storage capacity
- 3000 J100 Intel Pentium 4 640:160 GB
- ThinkCentre A51 P4 531 HT 3.0GHz:80 GB
Discrete graphics card model
- 3000 J100 Intel Pentium 4 640:SiS 661FX
- ThinkCentre A51 P4 531 HT 3.0GHz:Intel® GMA 900
Video adapter, bus
- 3000 J100 Intel Pentium 4 640:AGP 8X
- ThinkCentre A51 P4 531 HT 3.0GHz:PCI Express
Power supply
- 3000 J100 Intel Pentium 4 640:250 W
- ThinkCentre A51 P4 531 HT 3.0GHz:310 W

Side by side

Differences highlightedShow differences only

Comparison of 3000 J100 Intel Pentium 4 640, ThinkCentre A51 P4 531 HT 3.0GHz
96 specifications	A Lenovo 3000 J100 Intel Pentium 4 640 View product	B Lenovo ThinkCentre A51 P4 531 HT 3.0GHz View product
Processor1 differ
Processor modelKnown for one	640	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	3.2 GHz	3 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
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 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
PCI Express slots versionKnown for one	2.0	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	16	Unknown — not stated by the source
Processor core voltage (AC)Known for one	1.25 - 1.388 V	Unknown — not stated by the source
Maximum internal memory supported by processorKnown for one	32 GB	Unknown — not stated by the source
Memory types supported by processorKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory clock speeds supported by processorKnown for one	1066 MHz	Unknown — not stated by the source
Memory bandwidth supported by processor (max)Known for one	17 GB/s	Unknown — not stated by the source
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Memory3 differ
Internal memoryDiffers	1 GB	0.25 GB
Maximum internal memoryDiffers	2 GB	4 GB
Internal memory typeDiffers	DDR-SDRAM	DDR2-SDRAM
Memory channelsKnown for one	Dual-channel	Unknown — not stated by the source
Storage1 differ
Total storage capacityDiffers	160 GB	80 GB
HDD speedKnown for one	7200 RPM	Unknown — not stated by the source
Optical drive typeKnown for one	Unknown — not stated by the source	DVD-ROM
Graphics2 differ
On-board graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card modelDiffers	SiS 661FX	Intel® GMA 900
On-board graphics card familyKnown for one	Intel® HD Graphics	Unknown — not stated by the source
On-board graphics card modelKnown for one	Intel® HD Graphics	Unknown — not stated by the source
Number of displays supported (on-board graphics)Known for one	2	Unknown — not stated by the source
On-board graphics card base frequencyKnown for one	850 MHz	Unknown — not stated by the source
On-board graphics card dynamic frequency (max)Known for one	1100 MHz	Unknown — not stated by the source
Video adapter, busDiffers	AGP 8X	PCI Express
Ports & interfacesidentical
Firewire (IEEE 1394) portsKnown for one	1	Unknown — not stated by the source
Power1 differ
Power supplyDiffers	250 W	310 W
Software1 differ
Bundled softwareDiffers	Diskeeper Lite, Lenovo Care, Lenovo Password Manager, Norton Internet Security (OEM Edition) with 90 days of virus definition updates, PC Doctor diagnostics, ThinkVantage Rescue and Recovery, ThinkVantage System Update	Access program, ThinkVantage Rescue and Recovery with Rapid Restore, Norton AntiVirus 2005 with 90 days of virus definition upgrades, PC Doctor diagnostics
Processor special featuresidentical
CPU configuration (max)Known for one	1	Unknown — not stated by the source
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 Enhanced Halt StateKnown 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 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	27480	Unknown — not stated by the source
Processor package sizeKnown for one	37.5 x 37.5 mm	Unknown — not stated by the source
Supported instruction setsKnown for one	SSE4.1/4.2	Unknown — not stated by the source
Thermal Monitoring TechnologiesKnown for one	Yes	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	AC-97	SoundMAX Cadenza
Weight & dimensions4 differ
WidthDiffers	180 mm	442 mm
DepthDiffers	458 mm	401 mm
HeightDiffers	374 mm	146 mm
WeightDiffers	8.3 kg	14 kg
Other features1 differ
Security featuresDiffers	-Boot sequence control -Boot without keyboard or mouse -Diskette boot inhibit -Parallel port I/O control -Power on password -Serial port I/O control -Configuration password	-Boot sequence control -Diskette boot inhibit -Configuration password -Boot without keyboard or mouse -U-Bolt anchoring feature -Serial port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Diskette I/O control -Hardfile I/O control -Parallel port I/O control
Optical driveidentical
DVD read speedKnown for one	Unknown — not stated by the source	16x
Designidentical
Chassis typeKnown for one	Unknown — not stated by the source	Desktop

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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