Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP vs Lenovo ThinkCentre A51p P4 550 3.4HGz

75specifications compared
5differ
70identical
0known for one product only

Key differences

The Lenovo ThinkCentre A51p P4 550 3.4HGz has 0.25 GB more internal memory than the Lenovo ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP (0.5 GB vs 0.25 GB). Discrete graphics card model: AMD Radeon X600 Pro on the Lenovo ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP, AMD Radeon X300 SE on the Lenovo ThinkCentre A51p P4 550 3.4HGz. Operating system installed: Windows XP Home Edition on the Lenovo ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP, Windows XP Professional on the Lenovo ThinkCentre A51p P4 550 3.4HGz.

Internal memory
- ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP:0.25 GB
- ThinkCentre A51p P4 550 3.4HGz:0.5 GB
Discrete graphics card model
- ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP:AMD Radeon X600 Pro
- ThinkCentre A51p P4 550 3.4HGz:AMD Radeon X300 SE
Operating system installed
- ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP:Windows XP Home Edition
- ThinkCentre A51p P4 550 3.4HGz:Windows XP Professional

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP, ThinkCentre A51p P4 550 3.4HGz
75 specifications	A Lenovo ThinkCentre A51p P4-3.40 256 160 GB DVD-CDRW WXP View product	B Lenovo ThinkCentre A51p P4 550 3.4HGz View product
Processoridentical
Processor manufacturer	Intel	Intel
Processor family	Intel® Pentium® 4	Intel® Pentium® 4
Processor model	550	550
Processor cores	1	1
Processor frequency	3.4 GHz	3.4 GHz
Processor cache	1 MB	1 MB
Processor cache type	L2	L2
Processor front side bus	800 MHz	800 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Tcase	72.8 °C	72.8 °C
Tjunction	100 °C	100 °C
ECC supported by processor	No	No
Memory1 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Storageidentical
Total storage capacity	160 GB	160 GB
Optical drive type	DVD-ROM	DVD-ROM
Storage drive type	SATA	SATA
Diskette drive memory	1.44 MB	1.44 MB
Graphics1 differ
Discrete graphics card modelDiffers	AMD Radeon X600 Pro	AMD Radeon X300 SE
Video adapter, bus	PCI Express	PCI Express
Performanceidentical
Product type	PC	PC
Optical driveidentical
CD read speed	48x	48x
CD write speed	48x	48x
CD rewrite speed	32x	32x
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
Firewire (IEEE 1394) ports	1	1
Parallel ports quantity	1	1
Modem (RJ-11) ports	1	1
Poweridentical
Power supply type	110~220V	110~220V
Power supply	310 W	310 W
Designidentical
Chassis type	Tower	Tower
Software2 differ
Operating system installedDiffers	Windows XP Home Edition	Windows XP Professional
Bundled softwareDiffers	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	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
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	No	No
Idle States	No	No
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	No	No
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	No	No
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)	No	No
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® Wireless Display (Intel® WiDi)	No	No
Thermal Monitoring Technologies	No	No
Intel® Turbo Boost Technology	No	No
Intel® Quick Sync Video Technology	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	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	-Boot sequence control -Hard disk drive password -Boot without keyboard or mouse -Configuration password -Diskette boot inhibit -Diskette I/O control -Embedded Security Subsystem standard -Secure Data Disposal -Serial port I/O control -Hardfile I/O control -Kensington Lock Standard Enabled -Parallel	-Power on password -Parallel port I/O control -Hard disk drive password -Kensington Lock Standard Enabled -Hardfile I/O control -Secure Data Disposal -Serial port I/O control -Embedded Security Subsystem standard -Diskette I/O control -Configuration password -Diskette boot inhibit -Boot without keyb

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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