Product comparison · 2 pcs/workstations

Lenovo TS ThinkCentre A51 P4 630 3GHz vs Lenovo TS ThinkCentre A51 P4 640 3.2Ghz

83specifications compared
7differ
76identical
28known for one product only

Key differences

The Lenovo TS ThinkCentre A51 P4 640 3.2Ghz has 10 more processor model than the Lenovo TS ThinkCentre A51 P4 630 3GHz (640 vs 630). The Lenovo TS ThinkCentre A51 P4 640 3.2Ghz has 0.2 GHz more processor frequency than the Lenovo TS ThinkCentre A51 P4 630 3GHz (3.2 GHz vs 3 GHz). The Lenovo TS ThinkCentre A51 P4 640 3.2Ghz has 1 more CPU multiplier (bus/core ratio) than the Lenovo TS ThinkCentre A51 P4 630 3GHz (16 vs 15). Only the Lenovo TS ThinkCentre A51 P4 640 3.2Ghz has thermal Monitoring Technologies.

Processor model
- TS ThinkCentre A51 P4 630 3GHz:630
- TS ThinkCentre A51 P4 640 3.2Ghz:640
Processor frequency
- TS ThinkCentre A51 P4 630 3GHz:3 GHz
- TS ThinkCentre A51 P4 640 3.2Ghz:3.2 GHz
CPU multiplier (bus/core ratio)
- TS ThinkCentre A51 P4 630 3GHz:15
- TS ThinkCentre A51 P4 640 3.2Ghz:16
Internal memory
- TS ThinkCentre A51 P4 630 3GHz:0.25 GB
- TS ThinkCentre A51 P4 640 3.2Ghz:0.5 GB
Processor ARK ID
- TS ThinkCentre A51 P4 630 3GHz:27478
- TS ThinkCentre A51 P4 640 3.2Ghz:27480
Thermal Monitoring Technologies
- TS ThinkCentre A51 P4 630 3GHz:No
- TS ThinkCentre A51 P4 640 3.2Ghz:Yes

Side by side

Differences highlightedShow differences only

Comparison of TS ThinkCentre A51 P4 630 3GHz, TS ThinkCentre A51 P4 640 3.2Ghz
111 specifications	A Lenovo TS ThinkCentre A51 P4 630 3GHz View product	B Lenovo TS ThinkCentre A51 P4 640 3.2Ghz View product
Processor3 differ
Processor modelDiffers	630	640
Processor frequencyDiffers	3 GHz	3.2 GHz
PCI Express slots versionKnown for one	Unknown — not stated by the source	2.0
CPU multiplier (bus/core ratio)Differs	15	16
Processor core voltage (AC)Known for one	Unknown — not stated by the source	1.25 - 1.388 V
Maximum internal memory supported by processorKnown for one	Unknown — not stated by the source	32 GB
Memory types supported by processorKnown for one	Unknown — not stated by the source	DDR3-SDRAM
Memory clock speeds supported by processorKnown for one	Unknown — not stated by the source	1066 MHz
Memory bandwidth supported by processor (max)Known for one	Unknown — not stated by the source	17 GB/s
Processor seriesKnown for one	Intel Pentium 4 600 Series supporting Hyper-Threading Technology	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Memory channelsKnown for one	Unknown — not stated by the source	Dual-channel
Graphicsidentical
On-board graphics cardKnown for one	Unknown — not stated by the source	Yes
On-board graphics card familyKnown for one	Unknown — not stated by the source	Intel® HD Graphics
On-board graphics card modelKnown for one	Unknown — not stated by the source	Intel® HD Graphics
Number of displays supported (on-board graphics)Known for one	Unknown — not stated by the source	2
On-board graphics card base frequencyKnown for one	Unknown — not stated by the source	850 MHz
On-board graphics card dynamic frequency (max)Known for one	Unknown — not stated by the source	1100 MHz
Optical driveidentical
CD read speedKnown for one	Unknown — not stated by the source	48x
CD write speedKnown for one	Unknown — not stated by the source	48x
CD rewrite speedKnown for one	Unknown — not stated by the source	32x
Ports & interfacesidentical
DVI portKnown for one	No	Unknown — not stated by the source
S/PDIF out portKnown for one	No	Unknown — not stated by the source
SmartCard slotKnown for one	No	Unknown — not stated by the source
TV-outKnown for one	No	Unknown — not stated by the source
Processor special features2 differ
CPU configuration (max)Known for one	Unknown — not stated by the source	1
Processor ARK IDDiffers	27478	27480
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.1/4.2
Thermal Monitoring TechnologiesDiffers	No	Yes
Intel Dual Display Capable TechnologyKnown 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 VT-x with Extended Page Tables (EPT)Known for one	No	Unknown — not stated by the source
Other features1 differ
Security featuresDiffers	-U-Bolt anchoring feature -Security slot (for attachment of optional cable lock) -Serial port I/O control -Power on password -Hard drive I/O control -Parallel port I/O control -Hard disk drive password -Diskette I/O control -Diskette Boot inhibit -Boot without keyboard or mouse -Configuration passwo	-Serial port I/O control -U-Bolt anchoring feature -Security slot (for attachment of optional cable lock) -Parallel port I/O control -Power on password -Diskette Boot inhibit -Diskette I/O control -Hard disk drive password -Hard drive I/O control -Configuration password -Boot without keyboard or mou

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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