Lenovo ThinkCentre A51p P4-3.20 (540) 512/80/COMBO/WXP US vs Lenovo ThinkCentre M51

Comparison of ThinkCentre A51p P4-3.20 (540) 512/80/COMBO/WXP US, ThinkCentre M51

42 specifications	A Lenovo ThinkCentre A51p P4-3.20 (540) 512/80/COMBO/WXP USView product	B Lenovo ThinkCentre M51View product
Memory1 differ
Internal memory typeDiffers	DDR2-SDRAM	DDR-SDRAM
Storageidentical
Storage drive typeKnown for one	SATA	—Unknown — not stated by the source
HDD interfaceKnown for one	—Unknown — not stated by the source	SATA
HDD speedKnown for one	—Unknown — not stated by the source	7200 RPM
Graphicsidentical
Video adapter, busKnown for one	PCI Express	—Unknown — not stated by the source
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
Ports & interfacesidentical
Line-outKnown for one	—Unknown — not stated by the source	Yes
Line-inKnown for one	—Unknown — not stated by the source	Yes
Software1 differ
Bundled softwareDiffers	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, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage Rescue and Recovery with Rapid Restore
Other features1 differ
Security featuresDiffers	-Hard disk drive password -Diskette I/O control -Embedded Security Subsystem standard -Diskette boot inhibit -Boot without keyboard or mouse -Configuration password -Boot sequence control -Hardfile I/O control -Kensington Lock Standard Enabled -Parallel port I/O control -Power on password -Secure Da	-Boot without keyboard or mouse -Configuration password -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
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.