Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51p P4 520 2.8GHz vs Lenovo ThinkCentre A51p P4 630 3.0GHz

83specifications compared
20differ
63identical
5known for one product only

Key differences

The Lenovo ThinkCentre A51p P4 630 3.0GHz has 110 more processor model than the Lenovo ThinkCentre A51p P4 520 2.8GHz (630 vs 520). The Lenovo ThinkCentre A51p P4 630 3.0GHz has 0.2 GHz more processor frequency than the Lenovo ThinkCentre A51p P4 520 2.8GHz (3 GHz vs 2.8 GHz). The Lenovo ThinkCentre A51p P4 630 3.0GHz has 1 MB more processor cache than the Lenovo ThinkCentre A51p P4 520 2.8GHz (2 MB vs 1 MB). Only the Lenovo ThinkCentre A51p P4 630 3.0GHz has enhanced Intel SpeedStep Technology. Only the Lenovo ThinkCentre A51p P4 520 2.8GHz has thermal Monitoring Technologies.

Processor model
- ThinkCentre A51p P4 520 2.8GHz:520
- ThinkCentre A51p P4 630 3.0GHz:630
Processor frequency
- ThinkCentre A51p P4 520 2.8GHz:2.8 GHz
- ThinkCentre A51p P4 630 3.0GHz:3 GHz
Processor cache
- ThinkCentre A51p P4 520 2.8GHz:1 MB
- ThinkCentre A51p P4 630 3.0GHz:2 MB
Processor operating modes
- ThinkCentre A51p P4 520 2.8GHz:32-bit
- ThinkCentre A51p P4 630 3.0GHz:64-bit
Tcase
- ThinkCentre A51p P4 520 2.8GHz:67.7 °C
- ThinkCentre A51p P4 630 3.0GHz:66.6 °C
Number of Processing Die Transistors
- ThinkCentre A51p P4 520 2.8GHz:125 M
- ThinkCentre A51p P4 630 3.0GHz:169 M
Processing Die size
- ThinkCentre A51p P4 520 2.8GHz:112 mm²
- ThinkCentre A51p P4 630 3.0GHz:135 mm²
CPU multiplier (bus/core ratio)
- ThinkCentre A51p P4 520 2.8GHz:12
- ThinkCentre A51p P4 630 3.0GHz:15

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51p P4 520 2.8GHz, ThinkCentre A51p P4 630 3.0GHz
88 specifications	A Lenovo ThinkCentre A51p P4 520 2.8GHz View product	B Lenovo ThinkCentre A51p P4 630 3.0GHz View product
Processor8 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Pentium® 4	Intel® Pentium® 4
Processor modelDiffers	520	630
Processor cores	1	1
Processor threads	2	2
Processor frequencyDiffers	2.8 GHz	3 GHz
Processor cacheDiffers	1 MB	2 MB
Processor cache type	L2	L2
Processor front side bus	800 MHz	800 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Processor lithography	90 nm	90 nm
Processor operating modesDiffers	32-bit	64-bit
Processor codename	Prescott	Prescott
Thermal Design Power (TDP)	84 W	84 W
TcaseDiffers	67.7 °C	66.6 °C
TjunctionKnown for one	100 °C	Unknown — not stated by the source
Processor socket	LGA 775 (Socket T)	LGA 775 (Socket T)
Number of Processing Die TransistorsDiffers	125 M	169 M
Processing Die sizeDiffers	112 mm²	135 mm²
CPU multiplier (bus/core ratio)Differs	12	15
Processor core voltage (AC)Known for one	0.95 - 1.30 V	Unknown — not stated by the source
ECC supported by processor	No	No
Processor seriesKnown for one	Unknown — not stated by the source	Intel Pentium 4 600 Series supporting Hyper-Threading Technology
Memory1 differ
Internal memoryDiffers	0.25 GB	0.5 GB
Maximum internal memory	4 GB	4 GB
Internal memory type	DDR2-SDRAM	DDR2-SDRAM
Storage2 differ
Total storage capacityDiffers	40 GB	80 GB
Optical drive typeDiffers	CD-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
CD read speedKnown for one	48x	Unknown — not stated by the source
DVD read speedKnown for one	Unknown — not stated by the source	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
Designidentical
Chassis type	Desktop	Desktop
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
Processor special features4 differ
Embedded options available	No	No
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Execute Disable Bit	Yes	Yes
Idle States	No	No
Intel 64	Yes	Yes
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
Processor ARK IDDiffers	27460	27478
Processor package sizeDiffers	37.5 mm	37.5 x 37.5 mm
Thermal Monitoring TechnologiesDiffers	Yes	No
Intel® Turbo Boost Technology	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
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 & dimensions4 differ
WidthDiffers	442 mm	175 mm
DepthDiffers	401 mm	450 mm
HeightDiffers	146 mm	492 mm
WeightDiffers	14 kg	13.5 kg
Other features1 differ
Security featuresDiffers	-Serial port I/O control -Secure Data Disposal -Parallel port I/O control -Power on password -Hard disk drive password -Hardfile I/O control -Kensington Lock Standard Enabled -Diskette I/O control -Embedded Security Subsystem standard -Diskette boot inhibit -Boot without keyboard or mouse -Configura	-Serial port I/O control -Power on password -Secure Data Disposal -Parallel port I/O control -Hardfile I/O control -Kensington Lock Standard Enabled -Hard disk drive password -Boot without keyboard or mouse -Configuration password -Diskette I/O control -Embedded Security Subsystem standard -Diskette

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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