Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz vs Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz

36specifications compared
16differ
20identical
67known for one product only

Key differences

The Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz has 0.4 GHz more processor frequency than the Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz (3.2 GHz vs 2.8 GHz). The Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz has 267 MHz more processor front side bus than the Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz (800 MHz vs 533 MHz). The Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz has 0.25 GB more internal memory than the Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz (0.5 GB vs 0.25 GB). Processor family: Intel® Pentium® 4 on the Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz, Intel® Celeron® on the Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz. Internal memory type: DDR-SDRAM on the Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz, DDR2-SDRAM on the Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz.

Processor family
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:Intel® Pentium® 4
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:Intel® Celeron®
Processor frequency
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:3.2 GHz
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:2.8 GHz
Processor front side bus
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:800 MHz
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:533 MHz
Internal memory
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:0.5 GB
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:0.25 GB
Maximum internal memory
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:2 GB
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:4 GB
Internal memory type
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:DDR-SDRAM
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:DDR2-SDRAM
USB 2.0 ports quantity
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:8
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:6
Power supply
- ThinkCentre A51 Pentium 4 640 HT 3.2GHz:225 W
- TS ThinkCentre A51 Celeron D 336 2.8Ghz:310 W

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51 Pentium 4 640 HT 3.2GHz, TS ThinkCentre A51 Celeron D 336 2.8Ghz
103 specifications	A Lenovo ThinkCentre A51 Pentium 4 640 HT 3.2GHz View product	B Lenovo TS ThinkCentre A51 Celeron D 336 2.8Ghz View product
Processor3 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Pentium® 4	Intel® Celeron®
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	2.8 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 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	0.5 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
Storageidentical
Total storage capacity	80 GB	80 GB
Optical drive type	DVD-ROM	DVD-ROM
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
Diskette drive memory	1.44 MB	1.44 MB
Graphicsidentical
On-board graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card model	Intel® GMA 900	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 resolution	2048x1536 16777216 colors	2048x1536 16777216 colors
Video adapter, bus	PCI Express	PCI Express
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 speed	16x	16x
Network1 differ
Networking featuresDiffers	Ethernet/Fast Ethernet/Gigabit Ethernet	Ethernet/Fast Ethernet
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers	8	6
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 quantity	2	2
Parallel ports quantity	1	1
Firewire (IEEE 1394) portsKnown for one	Unknown — not stated by the source	0
TV-outKnown for one	Unknown — not stated by the source	No
Serial ports quantityKnown for one	Unknown — not stated by the source	0
Modem (RJ-11) portsKnown for one	Unknown — not stated by the source	0
USB 1.1 ports quantityKnown for one	Unknown — not stated by the source	0
Power1 differ
Power supplyDiffers	225 W	310 W
Design1 differ
Chassis typeDiffers	SFF	Desktop
Software1 differ
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled softwareDiffers	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), ThinkVantage Rescue and Recovery with Rapid Restore, Norton AntiVirus 2004 OEM Version, PC Doctor diagnosti	Access program, ThinkVantage Rescue and Recovery with Rapid Restore, Norton AntiVirus 2005 with 90 days of virus definition upgrades, PC Doctor diagnostics
Displayidentical
Display included	No	No
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
Audioidentical
Audio system	SoundMAX Cadenza	SoundMAX Cadenza
Weight & dimensions4 differ
WidthDiffers	309 mm	442 mm
DepthDiffers	359 mm	401 mm
HeightDiffers	85 mm	146 mm
WeightDiffers	8.5 kg	14 kg
Other features1 differ
Security featuresDiffers	-Boot without keyboard or mouse -Configuration password -Diskette Boot inhibit -Diskette I/O control -Hard disk drive password -Hard drive 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 featu	-Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature -Power on password -Hardfile I/O control -Parallel port I/O control -Boot without keyboard or mouse -Configuration password -Diskette boot inhibit -Diskette I/O control -Boot sequence control

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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