Product comparison · 2 pcs/workstations

Lenovo ThinkCentre M81 Intel® Core™ i3 i3-2100 vs Lenovo M91p + ThinkVision L2251p

92specifications compared
18differ
74identical
34known for one product only

Key differences

Processor family
- ThinkCentre M81 Intel® Core™ i3 i3-2100:Intel® Core™ i3
- M91p + ThinkVision L2251p:Intel® Core™ i5
Processor generation
- ThinkCentre M81 Intel® Core™ i3 i3-2100:2nd gen Intel® Core™ i3
- M91p + ThinkVision L2251p:2nd gen Intel® Core™ i5
Processor model
- ThinkCentre M81 Intel® Core™ i3 i3-2100:i3-2100
- M91p + ThinkVision L2251p:i5-2400
Processor cores
- ThinkCentre M81 Intel® Core™ i3 i3-2100:2
- M91p + ThinkVision L2251p:4
Processor cache
- ThinkCentre M81 Intel® Core™ i3 i3-2100:3 MB
- M91p + ThinkVision L2251p:6 MB
Thermal Design Power (TDP)
- ThinkCentre M81 Intel® Core™ i3 i3-2100:35, 65
- M91p + ThinkVision L2251p:95 W
Tcase
- ThinkCentre M81 Intel® Core™ i3 i3-2100:69.1 °C
- M91p + ThinkVision L2251p:72.6 °C
Internal memory
- ThinkCentre M81 Intel® Core™ i3 i3-2100:2 GB
- M91p + ThinkVision L2251p:4 GB

Side by side

Differences highlightedShow differences only

Comparison of M81, M91p + ThinkVision L2251p
126 specifications	A Lenovo ThinkCentre M81 Intel® Core™ i3 i3-2100 Model M81 View product	B Lenovo M91p + ThinkVision L2251p View product
Processor8 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i5
Processor generationDiffers	2nd gen Intel® Core™ i3	2nd gen Intel® Core™ i5
Processor modelDiffers	i3-2100	i5-2400
Processor coresDiffers	2	4
Processor threads	4	4
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.4 GHz
Processor frequency	3.1 GHz	3.1 GHz
Processor cacheDiffers	3 MB	6 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	DMI	DMI
FSB Parity	No	No
System bus rate	5 GT/s	5 GT/s
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i3-2100 Desktop Series	Intel Core i5-2400 Desktop Series
Processor codename	Sandy Bridge	Sandy Bridge
Thermal Design Power (TDP)Differs	35, 65	95 W
TcaseDiffers	69.1 °C	72.6 °C
Maximum number of PCI Express lanes	16	16
PCI Express slots version	2.0	2.0
Processor socket	LGA 1155 (Socket H2)	LGA 1155 (Socket H2)
CPU multiplier (bus/core ratio)	31	31
Maximum internal memory supported by processor	32 GB	32 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	1066,1333 MHz	1066,1333 MHz
Memory bandwidth supported by processor (max)	21 GB/s	21 GB/s
ECC supported by processor	No	No
L2 cacheKnown for one	3 MB	Unknown — not stated by the source
L3 cacheKnown for one	3 MB	Unknown — not stated by the source
Number of processors installedKnown for one	1	Unknown — not stated by the source
SteppingKnown for one	Q0	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	2 GB	4 GB
Maximum internal memoryKnown for one	Unknown — not stated by the source	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Known for one	Unknown — not stated by the source	1 x 4 GB
Memory slotsKnown for one	Unknown — not stated by the source	4x DIMM
Memory clock speed	1333 MHz	1333 MHz
Memory channels	Dual-channel	Dual-channel
Storage1 differ
Total storage capacityDiffers	320 GB	500 GB
Optical drive type	DVD-RW	DVD-RW
HDD interface	SATA	SATA
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
Card reader integratedKnown for one	Unknown — not stated by the source	No
HDD capacityKnown for one	320 GB	Unknown — not stated by the source
Graphicsidentical
On-board graphics card	Yes	Yes
Discrete graphics card model	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 2000	Intel® HD Graphics 2000
Number of displays supported (on-board graphics)	2	2
On-board graphics card base frequency	850 MHz	850 MHz
On-board graphics card dynamic frequency (max)	1100 MHz	1100 MHz
On-board graphics card ID	0x102	0x102
Graphics card family	Intel	Intel
Discrete graphics memory typeKnown for one	GDDR3	Unknown — not stated by the source
Performanceidentical
Product type	PC	PC
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® Q67 Express
Networkidentical
Ethernet LAN	Yes	Yes
Wi-FiKnown for one	Unknown — not stated by the source	No
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Modem typeKnown for one	No	Unknown — not stated by the source
Ports & interfacesidentical
USB 2.0 ports quantity	8	8
DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
DVI portKnown for one	Unknown — not stated by the source	No
Serial ports quantityKnown for one	Unknown — not stated by the source	1
PS/2 ports quantityKnown for one	0	Unknown — not stated by the source
DC-in jackKnown for one	Yes	Unknown — not stated by the source
Poweridentical
Power supplyKnown for one	Unknown — not stated by the source	280 W
Designidentical
Chassis type	Tower	Tower
Product colour	Black	Black
Form factorKnown for one	Tower	Unknown — not stated by the source
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Display1 differ
Display includedDiffers	No	Yes
Display diagonalKnown for one	Unknown — not stated by the source	55.9 cm (22")
Display resolutionKnown for one	Unknown — not stated by the source	1680 x 1050 pixels
Contrast ratio (typical)Known for one	Unknown — not stated by the source	1000:1
Display brightnessKnown for one	Unknown — not stated by the source	250 cd/m²
Viewing angle, horizontalKnown for one	Unknown — not stated by the source	170°
Viewing angle, verticalKnown for one	Unknown — not stated by the source	160°
Processor special features7 differ
CPU configuration (max)	1	1
Embedded options availableDiffers	No	Yes
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Identity Protection Technology version	1.00	1.00
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	Yes	Yes
Intel® Insider™	Yes	Yes
Intel® Wireless Display (Intel® WiDi)	No	No
Processor ARK IDDiffers	53422	52207
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Supported instruction sets	AVX	AVX
Thermal Monitoring Technologies	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	2.0
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
Intel® Quick Sync Video Technology	Yes	Yes
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Identity Protection Technology (Intel® IPT)	Yes	Yes
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Audioidentical
Audio systemKnown for one	Unknown — not stated by the source	High Definition Audio
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	175 mm
DepthKnown for one	Unknown — not stated by the source	442 mm
HeightKnown for one	Unknown — not stated by the source	414 mm
WeightKnown for one	Unknown — not stated by the source	11 kg
Other featuresidentical
Intel segment tagging	Enterprise, Professional	Enterprise, Professional

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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