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Product comparison · 2 pcs/workstations

HP Z820 Intel® Xeon® E5 Family E5-2643 vs Lenovo D20 + 41T3526

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  • 95specifications compared
  • 40differ
  • 55identical
  • 27known for one product only

Key differences

  • Processor family
    • Intel® Xeon® E5 Family
    • Intel® Xeon® 5000 Sequence
  • Processor model
    • E5-2643
    • E5620
  • Processor boost frequency
    • 3.5 GHz
    • 2.66 GHz
  • Processor frequency
    • 3.3 GHz
    • 2.4 GHz
  • Processor cache
    • 10 MB
    • 12 MB
  • System bus rate
    • 8 GT/s
    • 5.86 GT/s
  • Processor series
    • Intel Xeon E5-2600
    • Intel Xeon 5600 Series
  • Processor codename
    • Sandy Bridge EP
    • Westmere EP

Side by side

Differences highlightedShow differences only
122 specifications
A

HP

Z820 Intel® Xeon® E5 Family E5-2643

Model Z820

View product
B

Lenovo

D20 + 41T3526View product
Processor18 differ
Processor manufacturerIntelIntel
Processor familyDiffersIntel® Xeon® E5 FamilyIntel® Xeon® 5000 Sequence
Processor modelDiffersE5-2643E5620
Processor cores44
Processor threads88
Processor boost frequencyDiffers3.5 GHz2.66 GHz
Processor frequencyDiffers3.3 GHz2.4 GHz
Processor cacheDiffers10 MB12 MB
Processor cache typeSmart CacheSmart Cache
Bus typeQPIQPI
FSB ParityNoNo
System bus rateDiffers8 GT/s5.86 GT/s
Processor lithography32 nm32 nm
Processor operating modes64-bit64-bit
Processor seriesDiffersIntel Xeon E5-2600Intel Xeon 5600 Series
Processor codenameDiffersSandy Bridge EPWestmere EP
Thermal Design Power (TDP)Differs130 W80 W
TcaseDiffers73 °C77.6 °C
Maximum number of PCI Express lanesKnown for one40
PCI Express configurationsKnown for onex4, x8, x16
PCI Express slots versionKnown for one3.0
Number of QPI links22
Number of processors installedDiffers12
Processor socketDiffersLGA 2011 (Socket R)Socket B (LGA 1366)
CPU multiplier (bus/core ratio)Differs3518
SteppingDiffersM1B1
Maximum internal memory supported by processorDiffers750 GB288 GB
Memory types supported by processorDiffersDDR3-SDRAMDDR3 800/1066
Memory clock speeds supported by processorDiffers800,1066,1333,1600 MHz800,1066 MHz
Memory bandwidth supported by processor (max)Differs51.2 GB/s25.6 GB/s
ECC supported by processorYesYes
Memory5 differ
Internal memoryDiffers16 GB8 GB
Internal memory typeDDR3-SDRAMDDR3-SDRAM
Memory layout (slots x size)Differs4 x 4 GB4 x 16 GB
Memory slotsDiffers16x DIMM12x DIMM
Memory clock speedDiffers1600 MHz1333 MHz
Memory channelsDiffersQuad-channelTriple-channel
Maximum internal memoryKnown for one96 GB
ECCKnown for oneYes
Storage1 differ
Optical drive typeDiffersDVD Super MultiDVD+/-RW
Number of HDDs installed11
HDD capacity1 TB1 TB
HDD interfaceSATASATA
HDD speed7200 RPM7200 RPM
Card reader integratedYesYes
Graphicsidentical
Graphics cardNoNo
Performance1 differ
Product typeWorkstationWorkstation
Motherboard chipsetDiffersIntel® C602Intel® 5520
Networkidentical
Networking featuresGigabit Ethernet (10/100/1000)Gigabit Ethernet (10/100/1000)
Ports & interfaces1 differ
USB 2.0 ports quantityDiffers510
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one4
Ethernet LAN (RJ-45) ports22
Headphone outputs11
Microphone inYesYes
VGA (D-Sub) ports quantityKnown for one0
PS/2 ports quantityKnown for one2
Firewire (IEEE 1394) ports22
Serial ports quantity11
Parallel ports quantityKnown for one0
eSATA ports quantityKnown for one1
Expansion slotsidentical
Number of 3.5" baysKnown for one4
PCI Express x4 slotsKnown for one2
PCI Express x8 slotsKnown for one1
PCI Express x16 slotsKnown for one3
PCI slotsKnown for one1
Power1 differ
Power supplyDiffers1125 W1060 W
Design1 differ
Chassis typeDiffersMinitowerTower
Number of 5.25" baysKnown for one3
Cable lock slotKnown for oneNo
Country of originKnown for oneChina
Softwareidentical
Operating system installedWindows 7 ProfessionalWindows 7 Professional
Operating system architecture64-bit64-bit
Displayidentical
Display includedNoNo
Processor special features7 differ
CPU configuration (max)22
Embedded options availableDiffersNoYes
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
Graphics & IMC lithographyKnown for one32 nm
Idle StatesYesYes
Intel 64YesYes
Intel Clear Video TechnologyNoNo
Intel Demand Based SwitchingYesYes
Intel Dual Display Capable TechnologyNoNo
Intel Enhanced Halt StateYesYes
Intel FDI TechnologyNoNo
Intel Fast Memory AccessNoNo
Intel Flex Memory AccessNoNo
Intel Identity Protection Technology versionKnown for one0.00
Intel Rapid Storage TechnologyNoNo
Intel Secure Key Technology versionKnown for one1.00
Intel TSX-NI versionKnown for one0.00
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)NoNo
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)NoNo
Intel® InTru™ 3D TechnologyNoNo
Intel® Insider™NoNo
Intel® Secure KeyKnown for oneYes
Intel® Wireless Display (Intel® WiDi)NoNo
Physical Address Extension (PAE)Differs46 bit40 bit
Processor ARK IDDiffers6458747925
Processor package sizeDiffers52.5 x 45.0 mm42.5 X 45 mm
ScalabilityKnown for one2S
Supported instruction setsDiffersAVXSSE4.2
Thermal Monitoring TechnologiesDiffersYesNo
Intel® Turbo Boost TechnologyDiffers2.01.0
Intel® Hyper Threading Technology (Intel® HT Technology)YesYes
Intel® Quick Sync Video TechnologyNoNo
Intel® My WiFi Technology (Intel® MWT)NoNo
Intel® Identity Protection Technology (Intel® IPT)Known for oneNo
Intel® Anti-Theft Technology (Intel® AT)NoNo
Conflict-Free processorNoNo
Processor codeKnown for oneSLBV4
Audio1 differ
Audio systemDiffersHDHigh Definition Audio
Weight & dimensions4 differ
WidthDiffers203 mm210 mm
DepthDiffers525 mm602 mm
HeightDiffers444 mm485 mm
WeightDiffers19.5 kg27.1 kg
Sustainabilityidentical
Sustainability certificatesKnown for oneEPEAT Gold

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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