Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51 Intel® Pentium® 4 630 vs Lenovo ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home

71specifications compared
21differ
50identical
25known for one product only

Key differences

Processor model
- ThinkCentre A51 Intel® Pentium® 4 630:630
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:550
Processor frequency
- ThinkCentre A51 Intel® Pentium® 4 630:3 GHz
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:3.4 GHz
Processor cache
- ThinkCentre A51 Intel® Pentium® 4 630:2 MB
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:1 MB
Tcase
- ThinkCentre A51 Intel® Pentium® 4 630:66.6 °C
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:72.8 °C
Internal memory
- ThinkCentre A51 Intel® Pentium® 4 630:0.25 GB
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:0.5 GB
Total storage capacity
- ThinkCentre A51 Intel® Pentium® 4 630:80 GB
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:160 GB
Optical drive type
- ThinkCentre A51 Intel® Pentium® 4 630:DVD-ROM
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:DVD-RW
Discrete graphics card model
- ThinkCentre A51 Intel® Pentium® 4 630:Intel® GMA 900
- ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home:AMD Radeon X600 Pro

Side by side

Differences highlightedShow differences only

Comparison of A51, ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home
96 specifications	A Lenovo ThinkCentre A51 Intel® Pentium® 4 630 Model A51 View product	B Lenovo ThinkCentre A51p - Pentium 4 550, 512MB, 160GB, Win XP Home View product
Processor4 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Pentium® 4	Intel® Pentium® 4
Processor modelDiffers	630	550
Processor cores	1	1
Processor threadsKnown for one	2	Unknown — not stated by the source
Processor frequencyDiffers	3 GHz	3.4 GHz
Processor cacheDiffers	2 MB	1 MB
Processor cache type	L2	L2
Processor front side bus	800 MHz	800 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Processor lithographyKnown for one	90 nm	Unknown — not stated by the source
Processor operating modesKnown for one	64-bit	Unknown — not stated by the source
Processor seriesKnown for one	Intel Pentium 4 600 Series supporting Hyper-Threading Technology	Unknown — not stated by the source
Processor codenameKnown for one	Prescott	Unknown — not stated by the source
Thermal Design Power (TDP)Known for one	84 W	Unknown — not stated by the source
TcaseDiffers	66.6 °C	72.8 °C
Processor socketKnown for one	LGA 775 (Socket T)	Unknown — not stated by the source
Number of Processing Die TransistorsKnown for one	169 M	Unknown — not stated by the source
Processing Die sizeKnown for one	135 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Known for one	15	Unknown — not stated by the source
ECC supported by processor	No	No
TjunctionKnown for one	Unknown — not stated by the source	100 °C
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	80 GB	160 GB
Optical drive typeDiffers	DVD-ROM	DVD-RW
HDD speed	7200 RPM	7200 RPM
Storage drive typeKnown for one	SATA	Unknown — not stated by the source
Diskette drive memory	1.44 MB	1.44 MB
HDD interfaceKnown for one	Unknown — not stated by the source	SATA
Graphics2 differ
Discrete graphics card modelDiffers	Intel® GMA 900	AMD Radeon X600 Pro
Video adapter resolutionDiffers	2048x1536 16777216 colors	2048x1536 pixels
Video adapter, bus	PCI Express	PCI Express
Performanceidentical
Product type	PC	PC
Optical driveidentical
DVD read speedKnown for one	16x	Unknown — not stated by the source
Network1 differ
Networking featuresDiffers	Ethernet/Fast Ethernet	Gigabit Ethernet
Ports & interfaces4 differ
USB 2.0 ports quantityDiffers	6	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) portsDiffers	0	2
TV-out	No	No
Serial ports quantityDiffers	1	0
Parallel ports quantity	1	1
Modem (RJ-11) portsDiffers	0	1
USB 1.1 ports quantity	0	0
DVI portKnown for one	Unknown — not stated by the source	No
S/PDIF out portKnown for one	Unknown — not stated by the source	No
SmartCard slotKnown for one	Unknown — not stated by the source	No
Poweridentical
Power supply	310 W	310 W
Design1 differ
Chassis typeDiffers	Desktop	Tower
Software1 differ
Operating system installedDiffers	Windows XP Professional	Windows XP Home Edition
Bundled softwareKnown for one	Unknown — not stated by the source	Lotus SmartSuite Millennium ThinkVantage Client PC Doctor diagnostics ThinkVantage Rescue & Recovery
Displayidentical
Display included	No	No
Processor special features1 differ
Embedded options availableKnown for one	No	Unknown — not stated by the source
Enhanced Intel SpeedStep TechnologyDiffers	Yes	No
Execute Disable BitKnown for one	Yes	Unknown — not stated by the source
Idle States	No	No
Intel 64Known for one	Yes	Unknown — not stated by the source
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 IDKnown for one	27478	Unknown — not stated by the source
Processor package sizeKnown for one	37.5 x 37.5 mm	Unknown — not stated by the source
Thermal Monitoring Technologies	No	No
Intel® Turbo Boost Technology	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Yes	Unknown — not stated by the source
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 featuresidentical
Security featuresKnown for one	-Parallel port I/O control -Configuration password -Diskette boot inhibit -Diskette I/O control -Hardfile I/O control -Boot sequence control -Boot without keyboard or mouse -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring feature	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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