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 modelDiffers	520	630
Processor frequencyDiffers	2.8 GHz	3 GHz
Processor cacheDiffers	1 MB	2 MB
Processor operating modesDiffers	32-bit	64-bit
TcaseDiffers	67.7 °C	66.6 °C
TjunctionKnown for one	100 °C	Unknown — not stated by the source
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
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
Storage2 differ
Total storage capacityDiffers	40 GB	80 GB
Optical drive typeDiffers	CD-ROM	DVD-ROM
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
Processor special features4 differ
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Processor ARK IDDiffers	27460	27478
Processor package sizeDiffers	37.5 mm	37.5 x 37.5 mm
Thermal Monitoring TechnologiesDiffers	Yes	No
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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