Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51 P4 650 3.4GHz vs Lenovo ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML

33specifications compared
11differ
22identical
53known for one product only

Key differences

Processor frequency
- ThinkCentre A51 P4 650 3.4GHz:3.4 GHz
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:3 GHz
Total storage capacity
- ThinkCentre A51 P4 650 3.4GHz:80 GB
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:160 GB
Optical drive type
- ThinkCentre A51 P4 650 3.4GHz:DVD-ROM
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:DVD-RW
Power supply
- ThinkCentre A51 P4 650 3.4GHz:310 W
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:250 W
Audio system
- ThinkCentre A51 P4 650 3.4GHz:SoundMAX Cadenza
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:ADI 1891 HD
Width
- ThinkCentre A51 P4 650 3.4GHz:178 mm
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:180 mm
Depth
- ThinkCentre A51 P4 650 3.4GHz:450 mm
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:458 mm
Height
- ThinkCentre A51 P4 650 3.4GHz:430 mm
- ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML:374 mm

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51 P4 650 3.4GHz, ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML
86 specifications	A Lenovo ThinkCentre A51 P4 650 3.4GHz View product	B Lenovo ThinkCentre E50 P4 3,0GHz 512MB 160GB XPP ML View product
Processor1 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Pentium® 4	Intel® Pentium® 4
Processor modelKnown for one	Unknown — not stated by the source	630
Processor coresKnown for one	Unknown — not stated by the source	1
Processor threadsKnown for one	Unknown — not stated by the source	2
Processor frequencyDiffers	3.4 GHz	3 GHz
Processor cacheKnown for one	Unknown — not stated by the source	2 MB
Processor cache typeKnown for one	Unknown — not stated by the source	L2
Processor front side bus	800 MHz	800 MHz
Bus typeKnown for one	Unknown — not stated by the source	FSB
FSB ParityKnown for one	Unknown — not stated by the source	No
Processor lithographyKnown for one	Unknown — not stated by the source	90 nm
Processor operating modesKnown for one	Unknown — not stated by the source	64-bit
Processor seriesKnown for one	Unknown — not stated by the source	Intel Pentium 4 600 Series supporting Hyper-Threading Technology
Processor codenameKnown for one	Unknown — not stated by the source	Prescott
Thermal Design Power (TDP)Known for one	Unknown — not stated by the source	84 W
TcaseKnown for one	Unknown — not stated by the source	66.6 °C
Processor socketKnown for one	Unknown — not stated by the source	LGA 775 (Socket T)
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	169 M
Processing Die sizeKnown for one	Unknown — not stated by the source	135 mm²
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	15
ECC supported by processorKnown for one	Unknown — not stated by the source	No
Memoryidentical
Internal memory	0.5 GB	0.5 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Storage2 differ
Total storage capacityDiffers	80 GB	160 GB
Optical drive typeDiffers	DVD-ROM	DVD-RW
Storage drive typeKnown for one	Unknown — not stated by the source	SATA
Diskette drive memory	1.44 MB	1.44 MB
HDD interfaceKnown for one	SATA	Unknown — not stated by the source
Graphicsidentical
Discrete graphics card model	Intel® GMA 900	Intel® GMA 900
Video adapter, bus	PCI Express	PCI Express
Performanceidentical
Product type	PC	PC
Networkidentical
Networking features	Ethernet/Fast Ethernet	Ethernet/Fast Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity	6	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
Serial ports quantity	1	1
Parallel ports quantity	1	1
Power1 differ
Power supplyDiffers	310 W	250 W
Designidentical
Chassis type	Tower	Tower
Software1 differ
Operating system installed	Windows XP Professional	Windows XP Professional
Bundled softwareDiffers	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium edition (license), Access program, Norton AntiVirus 2005 with 90 days of virus definition upgrades, PC Doctor diagnostics, ThinkVantage Rescue and Recovery with Rapid Restore	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium edition (license), Access program, Norton AntiVirus 2005 with 90 days of virus definition upgrades, PC Doctor diagnostics, ThinkVantage Rescue and Recovery
Displayidentical
Display included	No	No
Processor special featuresidentical
Embedded options availableKnown for one	Unknown — not stated by the source	No
Enhanced Intel SpeedStep TechnologyKnown for one	Unknown — not stated by the source	Yes
Execute Disable BitKnown for one	Unknown — not stated by the source	Yes
Idle StatesKnown for one	Unknown — not stated by the source	No
Intel 64Known for one	Unknown — not stated by the source	Yes
Intel Clear Video TechnologyKnown for one	Unknown — not stated by the source	No
Intel Demand Based SwitchingKnown for one	Unknown — not stated by the source	No
Intel Dual Display Capable TechnologyKnown for one	Unknown — not stated by the source	No
Intel Enhanced Halt StateKnown for one	Unknown — not stated by the source	No
Intel FDI TechnologyKnown for one	Unknown — not stated by the source	No
Intel Fast Memory AccessKnown for one	Unknown — not stated by the source	No
Intel Flex Memory AccessKnown for one	Unknown — not stated by the source	No
Intel Rapid Storage TechnologyKnown for one	Unknown — not stated by the source	No
Intel Trusted Execution TechnologyKnown for one	Unknown — not stated by the source	No
Intel VT-x with Extended Page Tables (EPT)Known for one	Unknown — not stated by the source	No
Intel Virtualization Technology (VT-x)Known for one	Unknown — not stated by the source	No
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Unknown — not stated by the source	No
Intel® AES New Instructions (Intel® AES-NI)Known for one	Unknown — not stated by the source	No
Intel® Clear Video HD Technology (Intel® CVT HD)Known for one	Unknown — not stated by the source	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for one	Unknown — not stated by the source	No
Intel® InTru™ 3D TechnologyKnown for one	Unknown — not stated by the source	No
Intel® Insider™Known for one	Unknown — not stated by the source	No
Intel® Wireless Display (Intel® WiDi)Known for one	Unknown — not stated by the source	No
Processor ARK IDKnown for one	Unknown — not stated by the source	27478
Processor package sizeKnown for one	Unknown — not stated by the source	37.5 x 37.5 mm
Thermal Monitoring TechnologiesKnown for one	Unknown — not stated by the source	No
Intel® Turbo Boost TechnologyKnown for one	Unknown — not stated by the source	No
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Unknown — not stated by the source	Yes
Intel® Quick Sync Video TechnologyKnown for one	Unknown — not stated by the source	No
Intel® My WiFi Technology (Intel® MWT)Known for one	Unknown — not stated by the source	No
Intel® Anti-Theft Technology (Intel® AT)Known for one	Unknown — not stated by the source	No
Conflict-Free processorKnown for one	Unknown — not stated by the source	No
Audio1 differ
Audio systemDiffers	SoundMAX Cadenza	ADI 1891 HD
Weight & dimensions4 differ
WidthDiffers	178 mm	180 mm
DepthDiffers	450 mm	458 mm
HeightDiffers	430 mm	374 mm
WeightDiffers	12.5 kg	8.3 kg
Other features1 differ
Security featuresDiffers	-Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature -Diskette boot inhibit -Boot without keyboard or mouse -Configuration password -Boot sequence control -Hardfile I/O control -Parallel port I/O control -Power on password -Diskette I/O control	-Serial port I/O control -U-Bolt anchoring feature -Boot sequence control -Boot without keyboard or mouse -Configuration password -Diskette boot inhibit -Diskette I/O control -Hardfile I/O control -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock)
Optical driveidentical
DVD read speedKnown for one	16x	Unknown — not stated by the source

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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