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Product comparison · 2 pcs/workstations

Lenovo D20 + NVIDIA Quadro 2000 + ThinkVision L2440p vs Lenovo M91p + ThinkVision L2251p

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  • 89specifications compared
  • 51differ
  • 38identical
  • 41known for one product only

Key differences

  • Processor family
    • Intel® Xeon® 5000 Sequence
    • Intel® Core™ i5
  • Processor model
    • E5620
    • i5-2400
  • Processor threads
    • 8
    • 4
  • Processor boost frequency
    • 2.66 GHz
    • 3.4 GHz
  • Processor frequency
    • 2.4 GHz
    • 3.1 GHz
  • Processor cache
    • 12 MB
    • 6 MB
  • Bus type
    • QPI
    • DMI
  • System bus rate
    • 5.86 GT/s
    • 5 GT/s

Side by side

Differences highlightedShow differences only
130 specifications
A

Lenovo

D20 + NVIDIA Quadro 2000 + ThinkVision L2440pView product
B

Lenovo

M91p + ThinkVision L2251pView product
Processor19 differ
Processor manufacturerIntelIntel
Processor familyDiffersIntel® Xeon® 5000 SequenceIntel® Core™ i5
Processor generationKnown for one2nd gen Intel® Core™ i5
Processor modelDiffersE5620i5-2400
Processor cores44
Processor threadsDiffers84
Processor boost frequencyDiffers2.66 GHz3.4 GHz
Processor frequencyDiffers2.4 GHz3.1 GHz
Processor cacheDiffers12 MB6 MB
Processor cache typeSmart CacheSmart Cache
Bus typeDiffersQPIDMI
FSB ParityNoNo
System bus rateDiffers5.86 GT/s5 GT/s
Processor lithography32 nm32 nm
Processor operating modes64-bit64-bit
Processor seriesDiffersIntel Xeon 5600 SeriesIntel Core i5-2400 Desktop Series
Processor codenameDiffersWestmere EPSandy Bridge
Thermal Design Power (TDP)Differs80 W95 W
TcaseDiffers77.6 °C72.6 °C
Maximum number of PCI Express lanesKnown for one16
PCI Express slots versionKnown for one2.0
Processor socketDiffersSocket B (LGA 1366)LGA 1155 (Socket H2)
CPU multiplier (bus/core ratio)Differs1831
Maximum internal memory supported by processorDiffers288 GB32 GB
Memory types supported by processorDiffersDDR3 800/1066DDR3-SDRAM
Memory clock speeds supported by processorDiffers800,1066 MHz1066,1333 MHz
Memory bandwidth supported by processor (max)Differs25.6 GB/s21 GB/s
ECC supported by processorDiffersYesNo
Number of QPI linksKnown for one2
Number of processors installedKnown for one2
SteppingKnown for oneB1
Memory4 differ
Internal memory4 GB4 GB
Maximum internal memoryDiffers48 GB16 GB
Internal memory typeDDR3-SDRAMDDR3-SDRAM
Memory layout (slots x size)Differs2 x 2 GB1 x 4 GB
Memory slotsDiffers12x DIMM4x DIMM
Memory clock speed1333 MHz1333 MHz
Memory channelsDiffersTriple-channelDual-channel
ECCKnown for oneYes
Storage1 differ
Total storage capacityKnown for one500 GB
Optical drive typeDVD-RWDVD-RW
HDD interfaceSATASATA
HDD speed7200 RPM7200 RPM
Card reader integratedDiffersYesNo
Number of HDDs installedKnown for one1
HDD capacityKnown for one500 GB
Graphicsidentical
On-board graphics cardKnown for oneYes
Discrete graphics card modelKnown for oneIntel® HD Graphics
On-board graphics card familyKnown for oneIntel® HD Graphics
On-board graphics card modelKnown for oneIntel® HD Graphics 2000
Number of displays supported (on-board graphics)Known for one2
On-board graphics card base frequencyKnown for one850 MHz
On-board graphics card dynamic frequency (max)Known for one1100 MHz
On-board graphics card IDKnown for one0x102
Graphics card familyKnown for oneIntel
Graphics cardKnown for oneNo
Performance2 differ
Product typeDiffersWorkstationPC
Motherboard chipsetDiffersIntel® 5520Intel® Q67 Express
Network1 differ
Ethernet LANKnown for oneYes
Wi-FiKnown for oneNo
Networking featuresDiffersGigabit Ethernet (10/100/1000)Gigabit Ethernet
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers108
DisplayPorts quantityKnown for one1
Ethernet LAN (RJ-45) portsDiffers21
Headphone outputs11
Microphone inYesYes
VGA (D-Sub) ports quantityKnown for one1
DVI portKnown for oneNo
Serial ports quantity11
PS/2 ports quantityKnown for one2
Firewire (IEEE 1394) portsKnown for one2
Power1 differ
Power supplyDiffers1060 W280 W
Power supply input voltageKnown for one100 - 240 V
Power supply input frequencyKnown for one50 - 60 Hz
Designidentical
Chassis typeTowerTower
Product colourKnown for oneBlack
Softwareidentical
Operating system installedWindows 7 ProfessionalWindows 7 Professional
Operating system architecture64-bit64-bit
Display1 differ
Display includedYesYes
Display diagonalDiffers61 cm (24")55.9 cm (22")
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°
ResolutionKnown for one1920 x 1200 pixels
Processor special features16 differ
CPU configuration (max)Differs21
Embedded options availableYesYes
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
Idle StatesYesYes
Intel 64YesYes
Intel Clear Video TechnologyNoNo
Intel Demand Based SwitchingDiffersYesNo
Intel Dual Display Capable TechnologyDiffersNoYes
Intel Enhanced Halt StateYesYes
Intel FDI TechnologyDiffersNoYes
Intel Fast Memory AccessDiffersNoYes
Intel Flex Memory AccessDiffersNoYes
Intel Identity Protection Technology versionKnown for one1.00
Intel Rapid Storage TechnologyNoNo
Intel Trusted Execution TechnologyYesYes
Intel VT-x with Extended Page Tables (EPT)YesYes
Intel Virtualization Technology (VT-x)YesYes
Intel Virtualization Technology for Directed I/O (VT-d)YesYes
Intel® AES New Instructions (Intel® AES-NI)YesYes
Intel® Clear Video HD Technology (Intel® CVT HD)DiffersNoYes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)NoNo
Intel® InTru™ 3D TechnologyDiffersNoYes
Intel® Insider™DiffersNoYes
Intel® Wireless Display (Intel® WiDi)NoNo
Processor ARK IDDiffers4792552207
Processor package sizeDiffers42.5 X 45 mm37.5 x 37.5 mm
Supported instruction setsDiffersSSE4.2AVX
Thermal Monitoring TechnologiesDiffersNoYes
Intel® Turbo Boost TechnologyDiffers1.02.0
Intel® Hyper Threading Technology (Intel® HT Technology)DiffersYesNo
Intel® Quick Sync Video TechnologyDiffersNoYes
Intel® My WiFi Technology (Intel® MWT)NoNo
Intel® Identity Protection Technology (Intel® IPT)Known for oneYes
Intel® Anti-Theft Technology (Intel® AT)NoNo
Conflict-Free processorNoNo
Physical Address Extension (PAE)Known for one40 bit
Processor codeKnown for oneSLBV4
Audioidentical
Audio systemHigh Definition AudioHigh Definition Audio
Weight & dimensions4 differ
WidthDiffers210 mm175 mm
DepthDiffers602 mm442 mm
HeightDiffers434 mm414 mm
WeightDiffers25 kg11 kg
Other featuresidentical
Intel segment taggingKnown for oneEnterprise, Professional

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