Product comparison · 2 pcs/workstations

Dell OptiPlex 990 DT vs Dell OptiPlex 990 MT

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  • 135specifications compared
  • 17differ
  • 118identical
  • 1known for one product only

Key differences

The Dell OptiPlex 990 DT has 0.3 GHz more processor boost frequency than the Dell OptiPlex 990 MT (3.7 GHz vs 3.4 GHz). The Dell OptiPlex 990 DT has 0.2 GHz more processor frequency than the Dell OptiPlex 990 MT (3.3 GHz vs 3.1 GHz). The Dell OptiPlex 990 DT has 4 GB more internal memory than the Dell OptiPlex 990 MT (8 GB vs 4 GB). Only the Dell OptiPlex 990 MT has embedded options available. Processor model: i5-2500 on the Dell OptiPlex 990 DT, i5-2400 on the Dell OptiPlex 990 MT.

  • Processor model
    • OptiPlex 990 DT:i5-2500
    • OptiPlex 990 MT:i5-2400
  • Processor boost frequency
    • OptiPlex 990 DT:3.7 GHz
    • OptiPlex 990 MT:3.4 GHz
  • Processor frequency
    • OptiPlex 990 DT:3.3 GHz
    • OptiPlex 990 MT:3.1 GHz
  • Internal memory
    • OptiPlex 990 DT:8 GB
    • OptiPlex 990 MT:4 GB
  • Memory layout (slots x size)
    • OptiPlex 990 DT:2 x 4 GB
    • OptiPlex 990 MT:2 x 2 GB
  • Total storage capacity
    • OptiPlex 990 DT:1 TB
    • OptiPlex 990 MT:500 GB
  • Number of 3.5" bays
    • OptiPlex 990 DT:1
    • OptiPlex 990 MT:2
  • Power supply
    • OptiPlex 990 DT:250 W
    • OptiPlex 990 MT:265 W

Side by side

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Comparison of OptiPlex 990 DT, OptiPlex 990 MT
136 specifications
Processor4 differ
Processor manufacturerIntelIntel
Processor familyIntel® Core™ i5Intel® Core™ i5
Processor generation2nd gen Intel® Core™ i52nd gen Intel® Core™ i5
Processor modelDiffersi5-2500i5-2400
Processor cores44
Processor threads44
Processor boost frequencyDiffers3.7 GHz3.4 GHz
Processor frequencyDiffers3.3 GHz3.1 GHz
Processor cache6 MB6 MB
Processor cache typeSmart CacheSmart Cache
Bus typeDMIDMI
FSB ParityNoNo
System bus rate5 GT/s5 GT/s
Processor lithography32 nm32 nm
Processor operating modes64-bit64-bit
Processor seriesDiffersIntel Core i5-2500 Desktop SeriesIntel Core i5-2400 Desktop Series
Processor codenameSandy BridgeSandy Bridge
Thermal Design Power (TDP)95 W95 W
Tcase72.6 °C72.6 °C
Maximum number of PCI Express lanes1616
PCI Express slots version2.02.0
Number of processors installed11
Processor socketLGA 1155 (Socket H2)LGA 1155 (Socket H2)
CPU multiplier (bus/core ratio)3131
Maximum number of SMP processors11
PlatformPCPC
SteppingKnown for oneD2Unknown — not stated by the source
Maximum internal memory supported by processor32 GB32 GB
Memory types supported by processorDDR3-SDRAMDDR3-SDRAM
Memory clock speeds supported by processor1066,1333 MHz1066,1333 MHz
Memory bandwidth supported by processor (max)21 GB/s21 GB/s
ECC supported by processorNoNo
Memory2 differ
Internal memoryDiffers8 GB4 GB
Maximum internal memory16 GB16 GB
Internal memory typeDDR3-SDRAMDDR3-SDRAM
Memory layout (slots x size)Differs2 x 4 GB2 x 2 GB
Memory slots4x DIMM4x DIMM
Memory clock speed1333 MHz1333 MHz
Memory channelsDual-channelDual-channel
Storage1 differ
Total storage capacityDiffers1 TB500 GB
Optical drive typeDVD-RWDVD-RW
Number of HDDs installed11
HDD interfaceSATA IISATA II
HDD speed7200 RPM7200 RPM
HDD size3.5"3.5"
Card reader integratedNoNo
Floppy drive installedNoNo
Graphicsidentical
On-board graphics cardYesYes
Discrete graphics card modelIntel® HD Graphics 2000Intel® HD Graphics 2000
On-board graphics card familyIntel® HD GraphicsIntel® HD Graphics
On-board graphics card modelIntel® HD Graphics 2000Intel® HD Graphics 2000
Number of displays supported (on-board graphics)22
On-board graphics card base frequency850 MHz850 MHz
On-board graphics card dynamic frequency (max)1100 MHz1100 MHz
On-board graphics card ID0x1020x102
Graphics card familyIntelIntel
Performanceidentical
Product typePCPC
Motherboard chipsetIntel® Q67 ExpressIntel® Q67 Express
Password protection typeBIOSBIOS
Networkidentical
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
Cabling technology10/100/1000Base-T(X)10/100/1000Base-T(X)
Wi-FiNoNo
Wake-on-LAN readyYesYes
Networking featuresGigabit EthernetGigabit Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity1010
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity00
DisplayPorts quantity11
HDMI ports quantity00
Ethernet LAN (RJ-45) ports11
Headphone outputs11
Line-outYesYes
Line-inYesYes
Microphone inYesYes
VGA (D-Sub) ports quantity11
DVI portNoNo
PS/2 ports quantity22
Firewire (IEEE 1394) ports00
Serial ports quantity11
Parallel ports quantity00
Expansion slots1 differ
Number of 3.5" baysDiffers12
PCI Express x1 slots11
PCI Express x16 slots22
PCI slots11
Power1 differ
Power supply typeAC/DCAC/DC
Power supplyDiffers250 W265 W
Design2 differ
Chassis typeDiffersDesktopMini Tower
Number of 5.25" baysDiffers12
Product colourBlack, SilverBlack, Silver
Softwareidentical
Operating system installedWindows 7 ProfessionalWindows 7 Professional
Operating system architecture64-bit64-bit
Displayidentical
Display includedNoNo
Processor special features3 differ
CPU configuration (max)11
Embedded options availableDiffersNoYes
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
Idle StatesYesYes
Intel 64YesYes
Intel Clear Video TechnologyNoNo
Intel Demand Based SwitchingNoNo
Intel Dual Display Capable TechnologyYesYes
Intel Enhanced Halt StateYesYes
Intel FDI TechnologyYesYes
Intel Fast Memory AccessYesYes
Intel Flex Memory AccessYesYes
Intel Identity Protection Technology version1.001.00
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)YesYes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)NoNo
Intel® InTru™ 3D TechnologyYesYes
Intel® Insider™YesYes
Intel® Wireless Display (Intel® WiDi)NoNo
Processor ARK IDDiffers5220952207
Processor package size37.5 x 37.5 mm37.5 x 37.5 mm
Supported instruction setsDiffersAVX, SSE4.1, SSE4.2AVX
Thermal Monitoring TechnologiesYesYes
Intel® Turbo Boost Technology2.02.0
Intel® Hyper Threading Technology (Intel® HT Technology)NoNo
Intel® Quick Sync Video TechnologyYesYes
Intel® My WiFi Technology (Intel® MWT)NoNo
Intel® Identity Protection Technology (Intel® IPT)YesYes
Intel® Anti-Theft Technology (Intel® AT)NoNo
Conflict-Free processorNoNo
Audioidentical
Audio systemHDHD
Weight & dimensions3 differ
WidthDiffers102 mm175 mm
DepthDiffers410 mm417 mm
Height360 mm360 mm
WeightDiffers7.56 kg8.87 kg
Packaging contentidentical
Mouse includedNoNo
Keyboard includedNoNo
Certificatesidentical
Compliance industry standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3abIEEE 802.3, IEEE 802.3u, IEEE 802.3ab

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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