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Product comparison · 2 pcs/workstations

Lenovo ThinkCentre M58 + ThinkVision L2251p vs Lenovo ThinkStation E20 + ThinkVision L2440p

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  • 79specifications compared
  • 40differ
  • 39identical
  • 50known for one product only

Key differences

The Lenovo ThinkStation E20 + ThinkVision L2440p has 2 more processor threads than the Lenovo ThinkCentre M58 + ThinkVision L2251p (4 vs 2). The Lenovo ThinkStation E20 + ThinkVision L2440p has 0.5 GHz more processor frequency than the Lenovo ThinkCentre M58 + ThinkVision L2251p (3.2 GHz vs 2.7 GHz). The Lenovo ThinkStation E20 + ThinkVision L2440p has 2 MB more processor cache than the Lenovo ThinkCentre M58 + ThinkVision L2251p (4 MB vs 2 MB). Only the Lenovo ThinkStation E20 + ThinkVision L2440p has Intel Dual Display Capable Technology. Only the Lenovo ThinkStation E20 + ThinkVision L2440p has Intel FDI Technology.

  • Processor family
    • Intel® Pentium®
    • Intel® Core™ i5
  • Processor model
    • E5400
    • i5-650
  • Processor threads
    • 2
    • 4
  • Processor frequency
    • 2.7 GHz
    • 3.2 GHz
  • Processor cache
    • 2 MB
    • 4 MB
  • Processor cache type
    • L2
    • Smart Cache
  • Bus type
    • FSB
    • DMI
  • Processor lithography
    • 45 nm
    • 32 nm

Side by side

Differences highlightedShow differences only
129 specifications
A

Lenovo

ThinkCentre M58 + ThinkVision L2251pView product
B

Lenovo

ThinkStation E20 + ThinkVision L2440pView product
Processor17 differ
Processor familyDiffersIntel® Pentium®Intel® Core™ i5
Processor generationKnown for oneIntel® Core™ i5
Processor modelDiffersE5400i5-650
Processor threadsDiffers24
Processor boost frequencyKnown for one3.46 GHz
Processor frequencyDiffers2.7 GHz3.2 GHz
Processor cacheDiffers2 MB4 MB
Processor cache typeDiffersL2Smart Cache
Bus typeDiffersFSBDMI
System bus rateKnown for one2.5 GT/s
Processor lithographyDiffers45 nm32 nm
Processor seriesDiffersIntel Pentium E5000 Series for DesktopIntel Core i5-600 Desktop Series
Processor codenameDiffersWolfdaleClarkdale
Thermal Design Power (TDP)Differs45, 6573 W
TcaseDiffers74.1 °C72.6 °C
Maximum number of PCI Express lanesKnown for one16
PCI Express configurationsKnown for one1x16, 2x8
PCI Express slots versionKnown for one2.0
Number of processors installedKnown for one1
Processor socketDiffersLGA 775 (Socket T)LGA 1156 (Socket H)
Number of Processing Die TransistorsDiffers228 M382 M
Processing Die sizeDiffers82 mm²81 mm²
CPU multiplier (bus/core ratio)Differs13.524
SteppingDiffersR0C2
Maximum internal memory supported by processorKnown for one16 GB
Memory types supported by processorKnown for oneDDR3 1066/1333
Memory bandwidth supported by processor (max)Known for one21 GB/s
Processor front side busKnown for one800 MHz
Memory4 differ
Internal memoryDiffers2 GB4 GB
Maximum internal memoryDiffers4 GB16 GB
Memory layout (slots x size)Differs1 x 2 GB2 x 2 GB
Memory clock speedDiffers1066 MHz1333 MHz
Memory channelsKnown for oneDual-channel
Memory slotsKnown for one2x SO-DIMM
Storageidentical
Number of HDDs installedKnown for one1
HDD capacityKnown for one500 GB
Total storage capacityKnown for one320 GB
Optical drive typeKnown for oneDVD±RW
Floppy drive installedKnown for oneNo
Graphicsidentical
On-board graphics card familyKnown for oneIntel® HD Graphics
On-board graphics card modelKnown for oneIntel® HD Graphics
Number of displays supported (on-board graphics)Known for one2
On-board graphics card base frequencyKnown for one733 MHz
Discrete graphics card modelKnown for oneIntel® GMA 4500M
Graphics card familyKnown for oneIntel
Performance1 differ
Product typeDiffersPCWorkstation
Motherboard chipsetKnown for oneIntel® 3450
Ports & interfacesidentical
Firewire (IEEE 1394) portsKnown for one2
eSATA ports quantityKnown for one1
Serial ports quantityKnown for one1
DisplayPorts quantityKnown for one1
DVI portKnown for oneNo
Power1 differ
Power supply typeKnown for one100 - 240 VAC, 50/60 Hz
Power supplyDiffers130 W280 W
Designidentical
Chassis typeKnown for oneTower
Product colourKnown for oneBlack
Display1 differ
Display diagonalDiffers55.9 cm (22")61 cm (24")
ResolutionKnown for one1920 x 1200 pixels
Display resolutionKnown for one1680 x 1050 pixels
Contrast ratio (typical)Known for one1000:1
Display brightnessKnown for one250 cd/m²
Viewing angle, horizontalKnown for one170°
Viewing angle, verticalKnown for one160°
Processor special features12 differ
Graphics & IMC lithographyKnown for one45 nm
Intel Dual Display Capable TechnologyDiffersNoYes
Intel FDI TechnologyDiffersNoYes
Intel Trusted Execution TechnologyDiffersNoYes
Intel VT-x with Extended Page Tables (EPT)DiffersNoYes
Intel Virtualization Technology (VT-x)Differs2Yes
Intel Virtualization Technology for Directed I/O (VT-d)DiffersNoYes
Intel® AES New Instructions (Intel® AES-NI)DiffersNoYes
Intel® Clear Video HD Technology (Intel® CVT HD)DiffersNoYes
Physical Address Extension (PAE)Known for one36 bit
Processor ARK IDDiffers4047843546
Supported instruction setsKnown for oneSSE4.2
Thermal Monitoring TechnologiesDiffersYesNo
Intel® Turbo Boost TechnologyDiffersNo1.0
Intel® Hyper Threading Technology (Intel® HT Technology)DiffersNoYes
Processor codeKnown for oneSLGH7
Audio1 differ
Audio systemDiffersHigh Definition AudioRealtek ALC662
Weight & dimensions3 differ
WidthDiffers277 mm175 mm
DepthDiffers244 mm430.8 mm
HeightDiffers82 mm425.2 mm
WeightKnown for one4.18 kg
Networkidentical
Ethernet LANKnown for oneYes
Wi-FiKnown for oneNo
Networking featuresKnown for oneGigabit Ethernet
Packaging contentidentical
Remote control includedKnown for oneNo
Other featuresidentical
TV tuner integratedKnown for oneNo
Intel segment taggingKnown for oneEnterprise, 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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