Lenovo ThinkCentre S51 P4 541 HT 3.2GHz vs Lenovo TS ThinkCentre A51 P4 640 512MB 80GB XPP

Comparison of ThinkCentre S51 P4 541 HT 3.2GHz, TS ThinkCentre A51 P4 640 512MB 80GB XPP

102 specifications	A Lenovo ThinkCentre S51 P4 541 HT 3.2GHzView product	B Lenovo TS ThinkCentre A51 P4 640 512MB 80GB XPPView product
Processoridentical
Processor modelKnown for one	—Unknown — not stated by the source	640
Processor coresKnown for one	—Unknown — not stated by the source	1
Processor threadsKnown for one	—Unknown — not stated by the source	2
Processor cacheKnown for one	—Unknown — not stated by the source	2 MB
Processor cache typeKnown for one	—Unknown — not stated by the source	L2
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 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
PCI Express slots versionKnown for one	—Unknown — not stated by the source	2.0
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	16
Processor core voltage (AC)Known for one	—Unknown — not stated by the source	1.25 - 1.388 V
Maximum internal memory supported by processorKnown for one	—Unknown — not stated by the source	32 GB
Memory types supported by processorKnown for one	—Unknown — not stated by the source	DDR3-SDRAM
Memory clock speeds supported by processorKnown for one	—Unknown — not stated by the source	1066 MHz
Memory bandwidth supported by processor (max)Known for one	—Unknown — not stated by the source	17 GB/s
ECC supported by processorKnown for one	—Unknown — not stated by the source	No
Memoryidentical
Memory channelsKnown for one	—Unknown — not stated by the source	Dual-channel
Storageidentical
Storage drive typeKnown for one	—Unknown — not stated by the source	SATA
HDD interfaceKnown for one	SATA	—Unknown — not stated by the source
Graphicsidentical
On-board graphics cardKnown for one	—Unknown — not stated by the source	Yes
On-board graphics card familyKnown for one	—Unknown — not stated by the source	Intel® HD Graphics
On-board graphics card modelKnown for one	—Unknown — not stated by the source	Intel® HD Graphics
Number of displays supported (on-board graphics)Known for one	—Unknown — not stated by the source	2
On-board graphics card base frequencyKnown for one	—Unknown — not stated by the source	850 MHz
On-board graphics card dynamic frequency (max)Known for one	—Unknown — not stated by the source	1100 MHz
Video adapter resolutionKnown for one	—Unknown — not stated by the source	2048x1536 16777216 colors
Optical drive1 differ
CD read speedKnown for one	—Unknown — not stated by the source	48x
CD write speedKnown for one	—Unknown — not stated by the source	48x
CD rewrite speedKnown for one	—Unknown — not stated by the source	32x
DVD read speedDiffers	16x	12x
Ports & interfacesidentical
Firewire (IEEE 1394) portsKnown for one	—Unknown — not stated by the source	0
Serial ports quantityKnown for one	—Unknown — not stated by the source	0
Modem (RJ-11) portsKnown for one	—Unknown — not stated by the source	0
USB 1.1 ports quantityKnown for one	—Unknown — not stated by the source	0
Software1 differ
Bundled softwareDiffers	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Access Program 4.0; IBM Client Sotware; Rescue and Recovery; IBM Director, Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), ThinkVantage Rescue and Recovery with Rapid Restore, Norton AntiVirus 2004 OEM Version, PC Doctor diagnosti
Processor special featuresidentical
CPU configuration (max)Known for one	—Unknown — not stated by the source	1
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 Enhanced Halt StateKnown 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 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	27480
Processor package sizeKnown for one	—Unknown — not stated by the source	37.5 x 37.5 mm
Supported instruction setsKnown for one	—Unknown — not stated by the source	SSE4.1/4.2
Thermal Monitoring TechnologiesKnown for one	—Unknown — not stated by the source	Yes
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
Other features1 differ
Security featuresDiffers	-Hard drive I/O control -Parallel port I/O control -Power on password -Diskette I/O control -Hard disk drive password -Configuration password -Diskette Boot inhibit -Boot without keyboard or mouse -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring featu	-Boot without keyboard or mouse -Configuration password -Diskette Boot inhibit -Diskette I/O control -Hard disk drive password -Hard drive I/O control -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control -U-Bolt anchoring featu

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.