Product comparison · 2 pcs/workstations

Lenovo M81 + ThinkVision LS2251 vs Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650

106specifications compared
43differ
63identical
47known for one product only

Key differences

The Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 has 0.1 GHz more processor frequency than the Lenovo M81 + ThinkVision LS2251 (3.2 GHz vs 3.1 GHz). The Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 has 1 MB more processor cache than the Lenovo M81 + ThinkVision LS2251 (4 MB vs 3 MB). The Lenovo M81 + ThinkVision LS2251 has 2.5 GT/s more system bus rate than the Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 (5 GT/s vs 2.5 GT/s). Only the Lenovo M81 + ThinkVision LS2251 has display included. Only the Lenovo M81 + ThinkVision LS2251 has Intel Fast Memory Access.

Processor family
- M81 + ThinkVision LS2251:Intel® Core™ i3
- ThinkCentre M90i Intel® Core™ i5 i5-650:Intel® Core™ i5
Processor generation
- M81 + ThinkVision LS2251:2nd gen Intel® Core™ i3
- ThinkCentre M90i Intel® Core™ i5 i5-650:Intel® Core™ i5
Processor model
- M81 + ThinkVision LS2251:i3-2100
- ThinkCentre M90i Intel® Core™ i5 i5-650:i5-650
Processor frequency
- M81 + ThinkVision LS2251:3.1 GHz
- ThinkCentre M90i Intel® Core™ i5 i5-650:3.2 GHz
Processor cache
- M81 + ThinkVision LS2251:3 MB
- ThinkCentre M90i Intel® Core™ i5 i5-650:4 MB
System bus rate
- M81 + ThinkVision LS2251:5 GT/s
- ThinkCentre M90i Intel® Core™ i5 i5-650:2.5 GT/s
Processor codename
- M81 + ThinkVision LS2251:Sandy Bridge
- ThinkCentre M90i Intel® Core™ i5 i5-650:Clarkdale
Thermal Design Power (TDP)
- M81 + ThinkVision LS2251:35, 65
- ThinkCentre M90i Intel® Core™ i5 i5-650:73 W

Side by side

Differences highlightedShow differences only

Comparison of M81 + ThinkVision LS2251, M90i
153 specifications	A Lenovo M81 + ThinkVision LS2251 View product	B Lenovo ThinkCentre M90i Intel® Core™ i5 i5-650 Model M90i View product
Processor15 differ
Processor familyDiffers	Intel® Core™ i3	Intel® Core™ i5
Processor generationDiffers	2nd gen Intel® Core™ i3	Intel® Core™ i5
Processor modelDiffers	i3-2100	i5-650
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.46 GHz
Processor frequencyDiffers	3.1 GHz	3.2 GHz
Processor cacheDiffers	3 MB	4 MB
System bus rateDiffers	5 GT/s	2.5 GT/s
Processor seriesDiffers	Intel Core i3-2100 Desktop Series	Intel Core i5-600 Desktop Series
Processor codenameDiffers	Sandy Bridge	Clarkdale
Thermal Design Power (TDP)Differs	35, 65	73 W
TcaseDiffers	69.1 °C	72.6 °C
PCI Express configurationsKnown for one	Unknown — not stated by the source	1x16, 2x8
Processor socketDiffers	LGA 1155 (Socket H2)	LGA 1156 (Socket H)
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	382 M
Processing Die sizeKnown for one	Unknown — not stated by the source	81 mm²
CPU multiplier (bus/core ratio)Differs	31	24
Maximum number of SMP processorsKnown for one	Unknown — not stated by the source	1
PlatformKnown for one	Unknown — not stated by the source	PC
SteppingDiffers	Q0	C2
Maximum internal memory supported by processorDiffers	32 GB	16 GB
Memory types supported by processorDiffers	DDR3-SDRAM	DDR3 1066/1333
Memory clock speeds supported by processorKnown for one	1066,1333 MHz	Unknown — not stated by the source
Memory3 differ
Internal memoryDiffers	2 GB	3 GB
Maximum internal memoryDiffers	16 GB	8 GB
Memory layout (slots x size)Differs	1 x 2 GB	1 x 1 + 1 x 2 GB
Memory slotsKnown for one	Unknown — not stated by the source	4x DIMM
Storage2 differ
Total storage capacityDiffers	320 GB	500 GB
HDD capacityDiffers	320 GB	500 GB
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
Floppy drive installedKnown for one	Unknown — not stated by the source	No
RAID levelsKnown for one	Unknown — not stated by the source	0, 1
Graphics2 differ
On-board graphics card modelDiffers	Intel® HD Graphics 2000	Intel® HD Graphics
On-board graphics card base frequencyDiffers	850 MHz	733 MHz
On-board graphics card dynamic frequency (max)Known for one	1100 MHz	Unknown — not stated by the source
On-board graphics card IDKnown for one	0x102	Unknown — not stated by the source
Performance1 differ
Motherboard chipsetDiffers	Intel® Q65 Express	Intel® Q57
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	No
Networkidentical
Cabling technologyKnown for one	Unknown — not stated by the source	10/100/1000Base-T(X)
Wake-on-LAN readyKnown for one	Unknown — not stated by the source	Yes
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Ports & interfacesidentical
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	Unknown — not stated by the source	0
HDMI ports quantityKnown for one	Unknown — not stated by the source	0
Line-outKnown for one	Unknown — not stated by the source	Yes
Line-inKnown for one	Unknown — not stated by the source	Yes
PS/2 ports quantityKnown for one	Unknown — not stated by the source	0
Firewire (IEEE 1394) portsKnown for one	Unknown — not stated by the source	0
Parallel ports quantityKnown for one	Unknown — not stated by the source	0
Expansion slotsidentical
Number of 3.5" baysKnown for one	Unknown — not stated by the source	2
PCI Express x16 slotsKnown for one	Unknown — not stated by the source	1
PCI slotsKnown for one	Unknown — not stated by the source	1
Power1 differ
Power supply typeKnown for one	Unknown — not stated by the source	AC/DC
Power supplyDiffers	280 W	240 W
Design1 differ
Chassis typeDiffers	Tower	SFF
Number of 5.25" baysKnown for one	Unknown — not stated by the source	1
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
Cable lock slot typeKnown for one	Unknown — not stated by the source	Kensington
External drive baysKnown for one	Unknown — not stated by the source	1 x 5.25", 1 x 3.5"
Internal drive baysKnown for one	Unknown — not stated by the source	1 x 3.5"
Software1 differ
Operating system architectureDiffers	64-bit	32-bit
Mac compatibilityKnown for one	Unknown — not stated by the source	No
Display1 differ
Display includedDiffers	Yes	No
Display diagonalKnown for one	55.9 cm (22")	Unknown — not stated by the source
Display resolutionKnown for one	1680 x 1050 pixels	Unknown — not stated by the source
Contrast ratio (typical)Known for one	1000:1	Unknown — not stated by the source
Display brightnessKnown for one	250 cd/m²	Unknown — not stated by the source
Viewing angle, horizontalKnown for one	170°	Unknown — not stated by the source
Viewing angle, verticalKnown for one	160°	Unknown — not stated by the source
Processor special features12 differ
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	45 nm
Intel Fast Memory AccessDiffers	Yes	No
Intel Flex Memory AccessDiffers	Yes	No
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® InTru™ 3D TechnologyDiffers	Yes	No
Intel® Insider™Differs	Yes	No
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	36 bit
Processor ARK IDDiffers	53422	43546
Supported instruction setsDiffers	AVX	SSE4.2
Thermal Monitoring TechnologiesDiffers	Yes	No
Intel® Turbo Boost TechnologyDiffers	No	1.0
Intel® Quick Sync Video TechnologyDiffers	Yes	No
Intel Identity Protection Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel® Identity Protection Technology (Intel® IPT)Known for one	Yes	Unknown — not stated by the source
Audio1 differ
Audio systemDiffers	High Definition Audio	HD
Weight & dimensions3 differ
WidthDiffers	175 mm	317 mm
DepthDiffers	442 mm	355 mm
HeightDiffers	414 mm	99 mm
WeightKnown for one	11 kg	Unknown — not stated by the source
Certificatesidentical
Compliance industry standardsKnown for one	Unknown — not stated by the source	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Other featuresidentical
Security featuresKnown for one	Unknown — not stated by the source	TPM 1.2

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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