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Product comparison · 2 pcs/workstations

Lenovo M81 + LS2251 vs Lenovo M91 USFF + 24" monitor

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  • 108specifications compared
  • 16differ
  • 92identical
  • 48known for one product only

Key differences

  • Internal memory
    • 2 GB
    • 4 GB
  • Maximum internal memory
    • 16 GB
    • 8 GB
  • Memory layout (slots x size)
    • 1 x 2 GB
    • 1 x 4 GB
  • Total storage capacity
    • 320 GB
    • 500 GB
  • Optical drive type
    • DVD Super Multi
    • DVD±RW
  • HDD capacity
    • 320 GB
    • 500 GB
  • Discrete graphics card model
    • AMD Radeon HD 5450
    • Not available
  • Graphics card family
    • ATI, Intel
    • Intel

Side by side

Differences highlightedShow differences only
156 specifications
A

Lenovo

M81 + LS2251View product
B

Lenovo

M91 USFF + 24" monitorView product
Processoridentical
Maximum number of SMP processorsKnown for one1
PlatformKnown for onePC
Memory3 differ
Internal memoryDiffers2 GB4 GB
Maximum internal memoryDiffers16 GB8 GB
Memory layout (slots x size)Differs1 x 2 GB1 x 4 GB
Memory slotsKnown for one2x SO-DIMM
Storage3 differ
Total storage capacityDiffers320 GB500 GB
Optical drive typeDiffersDVD Super MultiDVD±RW
HDD capacityDiffers320 GB500 GB
HDD sizeKnown for one3.5"
Floppy drive installedKnown for oneNo
Graphics2 differ
Discrete graphics card modelDiffersAMD Radeon HD 5450Not available
Graphics card familyDiffersATI, IntelIntel
Performance1 differ
Motherboard chipsetDiffersIntel® Q65 ExpressIntel® Q67 Express
Optical driveidentical
LightScribeKnown for oneNo
Networkidentical
Wake-on-LAN readyKnown for oneYes
Copper ethernet cabling technologyKnown for one1000BASE-T, 1000BASE-TX, 100BASE-T, 100BASE-TX, 10BASE-T
Ethernet interface typeKnown for oneGigabit Ethernet
Networking featuresKnown for oneGigabit Ethernet
Ports & interfaces1 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one0
HDMI ports quantityKnown for one0
Line-outKnown for oneYes
Line-inKnown for oneYes
DVI portDiffersYesNo
PS/2 ports quantityKnown for one0
Firewire (IEEE 1394) portsKnown for one0
Serial ports quantityKnown for one1
Parallel ports quantityKnown for one0
HDMIKnown for oneNo
Headphone connectivityKnown for one3.5 mm
Microphone connectivityKnown for one3.5 mm
USB connector typeKnown for oneUSB Type-A
Expansion slotsidentical
Number of 3.5" baysKnown for one3
PCI Express x1 slotsKnown for one1
PCI Express x16 slotsKnown for one1
PCI slotsKnown for one2
Power1 differ
Power supply typeKnown for oneAC/DC
Power supplyDiffers280 W150 W
Designidentical
Chassis typeKnown for oneTower
Number of 5.25" baysKnown for one1
External drive baysKnown for one1 x 5.25", 1 x 3.5"
Internal drive baysKnown for one2 x 3.5"
Softwareidentical
Mac compatibilityKnown for oneNo
Operating system architectureKnown for one64-bit
Display1 differ
Display diagonalDiffers55.9 cm (22")61 cm (24")
Display typeKnown for oneLED
Display resolutionKnown for one1680 x 1050 pixels
Native aspect ratioKnown for one16:10
Contrast ratio (typical)Known for one1000:1
Display number of coloursKnown for one16.78 million colours
TouchscreenKnown for oneNo
Display brightnessKnown for one250 cd/m²
Viewing angle, horizontalKnown for one170°
Viewing angle, verticalKnown for one160°
DisplayKnown for oneTFT
Audio1 differ
Audio systemDiffersHDHigh Definition Audio
Weight & dimensions3 differ
WidthDiffers175 mm79 mm
DepthDiffers442 mm275 mm
HeightDiffers414 mm238 mm
WeightKnown for one4.2 kg
Packaging contentidentical
Mouse includedKnown for oneYes
Keyboard includedKnown for oneYes
Certificatesidentical
Compliance industry standardsKnown for oneIEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Sustainabilityidentical
Sustainability certificatesKnown for oneEPEAT Gold, ENERGY STAR

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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