Product comparison · 2 pcs/workstations

Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 vs Lenovo M91p + ThinkVision LS2251

105specifications compared
38differ
67identical
48known for one product only

Key differences

The Lenovo M91p + ThinkVision LS2251 has 2 more processor cores than the Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 (4 vs 2). The Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 has 0.06 GHz more processor boost frequency than the Lenovo M91p + ThinkVision LS2251 (3.46 GHz vs 3.4 GHz). The Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 has 0.1 GHz more processor frequency than the Lenovo M91p + ThinkVision LS2251 (3.2 GHz vs 3.1 GHz). Only the Lenovo M91p + ThinkVision LS2251 has display included. Only the Lenovo M91p + ThinkVision LS2251 has embedded options available.

Processor generation
- ThinkCentre M90i Intel® Core™ i5 i5-650:Intel® Core™ i5
- M91p + ThinkVision LS2251:2nd gen Intel® Core™ i5
Processor model
- ThinkCentre M90i Intel® Core™ i5 i5-650:i5-650
- M91p + ThinkVision LS2251:i5-2400
Processor cores
- ThinkCentre M90i Intel® Core™ i5 i5-650:2
- M91p + ThinkVision LS2251:4
Processor boost frequency
- ThinkCentre M90i Intel® Core™ i5 i5-650:3.46 GHz
- M91p + ThinkVision LS2251:3.4 GHz
Processor frequency
- ThinkCentre M90i Intel® Core™ i5 i5-650:3.2 GHz
- M91p + ThinkVision LS2251:3.1 GHz
Processor cache
- ThinkCentre M90i Intel® Core™ i5 i5-650:4 MB
- M91p + ThinkVision LS2251:6 MB
System bus rate
- ThinkCentre M90i Intel® Core™ i5 i5-650:2.5 GT/s
- M91p + ThinkVision LS2251:5 GT/s
Processor codename
- ThinkCentre M90i Intel® Core™ i5 i5-650:Clarkdale
- M91p + ThinkVision LS2251:Sandy Bridge

Side by side

Differences highlightedShow differences only

Comparison of M90i, M91p + ThinkVision LS2251
153 specifications	A Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 Model M90i View product	B Lenovo M91p + ThinkVision LS2251 View product
Processor14 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i5	Intel® Core™ i5
Processor generationDiffers	Intel® Core™ i5	2nd gen Intel® Core™ i5
Processor modelDiffers	i5-650	i5-2400
Processor coresDiffers	2	4
Processor threads	4	4
Processor boost frequencyDiffers	3.46 GHz	3.4 GHz
Processor frequencyDiffers	3.2 GHz	3.1 GHz
Processor cacheDiffers	4 MB	6 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	DMI	DMI
FSB Parity	No	No
System bus rateDiffers	2.5 GT/s	5 GT/s
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i5-600 Desktop Series	Intel Core i5-2400 Desktop Series
Processor codenameDiffers	Clarkdale	Sandy Bridge
Thermal Design Power (TDP)Differs	73 W	95 W
Tcase	72.6 °C	72.6 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurationsKnown for one	1x16, 2x8	Unknown — not stated by the source
PCI Express slots version	2.0	2.0
Number of processors installed	1	1
Processor socketDiffers	LGA 1156 (Socket H)	LGA 1155 (Socket H2)
Number of Processing Die TransistorsKnown for one	382 M	Unknown — not stated by the source
Processing Die sizeKnown for one	81 mm²	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Differs	24	31
Maximum number of SMP processorsKnown for one	1	Unknown — not stated by the source
PlatformKnown for one	PC	Unknown — not stated by the source
SteppingKnown for one	C2	Unknown — not stated by the source
Maximum internal memory supported by processorDiffers	16 GB	32 GB
Memory types supported by processorDiffers	DDR3 1066/1333	DDR3-SDRAM
Memory bandwidth supported by processor (max)	21 GB/s	21 GB/s
ECC supported by processor	No	No
Memory clock speeds supported by processorKnown for one	Unknown — not stated by the source	1066,1333 MHz
Memory2 differ
Internal memoryDiffers	3 GB	4 GB
Maximum internal memoryDiffers	8 GB	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Known for one	1 x 1 + 1 x 2 GB	Unknown — not stated by the source
Memory slots	4x DIMM	4x DIMM
Memory clock speed	1333 MHz	1333 MHz
Memory channels	Dual-channel	Dual-channel
Storageidentical
Total storage capacity	500 GB	500 GB
Optical drive type	DVD-RW	DVD-RW
Number of HDDs installed	1	1
HDD capacityKnown for one	500 GB	Unknown — not stated by the source
HDD interface	SATA	SATA
HDD speed	7200 RPM	7200 RPM
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Card reader integrated	No	No
Floppy drive installedKnown for one	No	Unknown — not stated by the source
RAID levelsKnown for one	0, 1	Unknown — not stated by the source
Graphics2 differ
On-board graphics card	Yes	Yes
Discrete graphics card model	Not available	Not available
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® HD Graphics	Intel® HD Graphics 2000
Number of displays supported (on-board graphics)	2	2
On-board graphics card base frequencyDiffers	733 MHz	850 MHz
Graphics card family	Intel	Intel
On-board graphics card dynamic frequency (max)Known for one	Unknown — not stated by the source	1100 MHz
On-board graphics card IDKnown for one	Unknown — not stated by the source	0x102
Performance1 differ
Product type	PC	PC
Motherboard chipsetDiffers	Intel® Q57	Intel® Q67 Express
Optical driveidentical
LightScribeKnown for one	No	Unknown — not stated by the source
Networkidentical
Ethernet LAN	Yes	Yes
Ethernet LAN data ratesKnown for one	10,100,1000 Mbit/s	Unknown — not stated by the source
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
Wi-Fi	No	No
Wake-on-LAN readyKnown for one	Yes	Unknown — not stated by the source
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity	8	8
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
DisplayPorts quantity	1	1
HDMI ports quantityKnown for one	0	Unknown — not stated by the source
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Line-outKnown for one	Yes	Unknown — not stated by the source
Line-inKnown for one	Yes	Unknown — not stated by the source
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
DVI port	No	No
PS/2 ports quantityKnown for one	0	Unknown — not stated by the source
Firewire (IEEE 1394) portsKnown for one	0	Unknown — not stated by the source
Serial ports quantity	1	1
Parallel ports quantityKnown for one	0	Unknown — not stated by the source
Expansion slotsidentical
Number of 3.5" baysKnown for one	2	Unknown — not stated by the source
PCI Express x16 slotsKnown for one	1	Unknown — not stated by the source
PCI slotsKnown for one	1	Unknown — not stated by the source
Power1 differ
Power supply typeKnown for one	AC/DC	Unknown — not stated by the source
Power supplyDiffers	240 W	280 W
Design1 differ
Chassis typeDiffers	SFF	Tower
Number of 5.25" baysKnown for one	1	Unknown — not stated by the source
Cable lock slotKnown for one	Yes	Unknown — not stated by the source
Cable lock slot typeKnown for one	Kensington	Unknown — not stated by the source
Product colour	Black	Black
External drive baysKnown for one	1 x 5.25", 1 x 3.5"	Unknown — not stated by the source
Internal drive baysKnown for one	1 x 3.5"	Unknown — not stated by the source
Software1 differ
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architectureDiffers	32-bit	64-bit
Mac compatibilityKnown for one	No	Unknown — not stated by the source
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 features11 differ
CPU configuration (max)	1	1
Embedded options availableDiffers	No	Yes
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithographyKnown for one	45 nm	Unknown — not stated by the source
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 AccessDiffers	No	Yes
Intel Flex Memory AccessDiffers	No	Yes
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	Yes	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)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	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 TechnologyDiffers	No	Yes
Intel® Insider™Differs	No	Yes
Intel® Wireless Display (Intel® WiDi)	No	No
Physical Address Extension (PAE)Known for one	36 bit	Unknown — not stated by the source
Processor ARK IDDiffers	43546	52207
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Supported instruction setsDiffers	SSE4.2	AVX
Thermal Monitoring TechnologiesDiffers	No	Yes
Intel® Turbo Boost TechnologyDiffers	1.0	2.0
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
Intel® Quick Sync Video TechnologyDiffers	No	Yes
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Intel Identity Protection Technology versionKnown for one	Unknown — not stated by the source	1.00
Intel® Identity Protection Technology (Intel® IPT)Known for one	Unknown — not stated by the source	Yes
Audio1 differ
Audio systemDiffers	HD	High Definition Audio
Weight & dimensions3 differ
WidthDiffers	317 mm	175 mm
DepthDiffers	355 mm	442 mm
HeightDiffers	99 mm	414 mm
WeightKnown for one	Unknown — not stated by the source	11 kg
Certificatesidentical
Compliance industry standardsKnown for one	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab	Unknown — not stated by the source
Other featuresidentical
Security featuresKnown for one	TPM 1.2	Unknown — not stated by the source
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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