Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51p P4 660 3.6GHz vs Lenovo ThinkCentre M51 P4 540 3.2GHz

35specifications compared
4differ
31identical
1known for one product only

Key differences

The Lenovo ThinkCentre A51p P4 660 3.6GHz has 0.4 GHz more processor frequency than the Lenovo ThinkCentre M51 P4 540 3.2GHz (3.6 GHz vs 3.2 GHz). Internal memory type: DDR2-SDRAM on the Lenovo ThinkCentre A51p P4 660 3.6GHz, DDR-SDRAM on the Lenovo ThinkCentre M51 P4 540 3.2GHz. Chassis type: Desktop on the Lenovo ThinkCentre A51p P4 660 3.6GHz, Tower on the Lenovo ThinkCentre M51 P4 540 3.2GHz.

Processor frequency
- ThinkCentre A51p P4 660 3.6GHz:3.6 GHz
- ThinkCentre M51 P4 540 3.2GHz:3.2 GHz
Internal memory type
- ThinkCentre A51p P4 660 3.6GHz:DDR2-SDRAM
- ThinkCentre M51 P4 540 3.2GHz:DDR-SDRAM
Chassis type
- ThinkCentre A51p P4 660 3.6GHz:Desktop
- ThinkCentre M51 P4 540 3.2GHz:Tower

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51p P4 660 3.6GHz, ThinkCentre M51 P4 540 3.2GHz
36 specifications	A Lenovo ThinkCentre A51p P4 660 3.6GHz View product	B Lenovo ThinkCentre M51 P4 540 3.2GHz View product
Processor1 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Pentium® 4	Intel® Pentium® 4
Processor frequencyDiffers	3.6 GHz	3.2 GHz
Processor front side bus	800 MHz	800 MHz
Memory1 differ
Internal memory	0.5 GB	0.5 GB
Maximum internal memory	4 GB	4 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR-SDRAM
Storageidentical
Total storage capacity	80 GB	80 GB
Optical drive type	DVD-ROM	DVD-ROM
Storage drive type	SATA	SATA
Diskette drive memory	1.44 MB	1.44 MB
Graphicsidentical
Discrete graphics card model	Intel® GMA 900	Intel® GMA 900
Video adapter, bus	PCI Express	PCI Express
Performanceidentical
Product type	PC	PC
Optical driveidentical
DVD read speed	16x	16x
Networkidentical
Networking features	Ethernet/Fast Ethernet/Gigabit Ethernet	Ethernet/Fast Ethernet/Gigabit Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity	8	8
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
Poweridentical
Power supply type	110~220V	110~220V
Power supply	310 W	310 W
Design1 differ
Chassis typeDiffers	Desktop	Tower
Softwareidentical
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled software	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Lotus SmartSuite Millennium, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage Rescue	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Lotus SmartSuite Millennium, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage Rescue
Displayidentical
Display included	No	No
Audioidentical
Audio system	SoundMAX Cadenza	SoundMAX Cadenza
Weight & dimensionsidentical
Width	175 mm	175 mm
Depth	450 mm	450 mm
Height	492 mm	492 mm
Weight	13.5 kg	13.5 kg
Other features1 differ
Security featuresDiffers	-Diskette boot inhibit -Boot without keyboard or mouse -Configuration password -Boot sequence control -Power on password -Kensington Lock Standard Enabled -Parallel port I/O control -Diskette I/O control -Embedded Security Subsystem standard -Hard disk drive password -Hardfile I/O control -Secure Da	-Diskette Boot inhibit -Diskette I/O control -Hard disk drive password -Hard drive I/O control -Padlock loop -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -oot without keyboard or mouse -Configuration password
Intel segment taggingKnown for one	Unknown — not stated by the source	Enterprise, Professional

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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