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Product comparison · 2 cpus

HP Z620 Xeon E5-2643 4C 3.30GHz 10MB vs HP Z820 Xeon E5-2620 6C 2.00GHz 15MB

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  • 48specifications compared
  • 14differ
  • 34identical
  • 0known for one product only

Key differences

The HP Z620 Xeon E5-2643 4C 3.30GHz 10MB has 1.3 GHz more processor base frequency than the HP Z820 Xeon E5-2620 6C 2.00GHz 15MB (3.3 GHz vs 2 GHz). The HP Z820 Xeon E5-2620 6C 2.00GHz 15MB has 2 more processor cores than the HP Z620 Xeon E5-2643 4C 3.30GHz 10MB (6 vs 4). The HP Z820 Xeon E5-2620 6C 2.00GHz 15MB has 4 more processor threads than the HP Z620 Xeon E5-2643 4C 3.30GHz 10MB (12 vs 8). Processor model: E5-2643 on the HP Z620 Xeon E5-2643 4C 3.30GHz 10MB, E5-2620 on the HP Z820 Xeon E5-2620 6C 2.00GHz 15MB. Memory clock speeds supported by processor: 800,1066,1333,1600 MHz on the HP Z620 Xeon E5-2643 4C 3.30GHz 10MB, 800,1066,1333 MHz on the HP Z820 Xeon E5-2620 6C 2.00GHz 15MB.

  • Processor model
    • E5-2643
    • E5-2620
  • Processor base frequency
    • 3.3 GHz
    • 2 GHz
  • Processor cores
    • 4
    • 6
  • Processor threads
    • 8
    • 12
  • System bus rate
    • 8 GT/s
    • 7.2 GT/s
  • Processor boost frequency
    • 3.5 GHz
    • 2.5 GHz
  • Processor cache
    • 10 MB
    • 15 MB
  • Processor front side bus
    • 1600 MHz
    • 1333 MHz

Side by side

Differences highlightedShow differences only
48 specifications
A

HP

Z620 Xeon E5-2643 4C 3.30GHz 10MBView product
B

HP

Z820 Xeon E5-2620 6C 2.00GHz 15MBView product
Processor11 differ
Processor familyIntel® Xeon® E5 FamilyIntel® Xeon® E5 Family
Processor modelDiffersE5-2643E5-2620
Processor base frequencyDiffers3.3 GHz2 GHz
Processor coresDiffers46
Processor socketLGA 2011 (Socket R)LGA 2011 (Socket R)
Processor lithography32 nm32 nm
Component forServer/workstationServer/workstation
Processor threadsDiffers812
System bus rateDiffers8 GT/s7.2 GT/s
Processor operating modes64-bit64-bit
Processor boost frequencyDiffers3.5 GHz2.5 GHz
Processor cacheDiffers10 MB15 MB
Processor cache typeL3L3
Processor front side busDiffers1600 MHz1333 MHz
Thermal Design Power (TDP)Differs130 W95 W
VID Voltage Range0.6 - 1.35 V0.6 - 1.35 V
Bus typeQPIQPI
CPU multiplier (bus/core ratio)Differs3525
Number of QPI links22
Memory bandwidth supported by processor (max)Differs51.2 GB/s42.6 GB/s
Memory1 differ
Maximum internal memory supported by processor750 GB750 GB
Memory types supported by processorDDR3-SDRAMDDR3-SDRAM
Memory clock speeds supported by processorDiffers800,1066,1333,1600 MHz800,1066,1333 MHz
Memory channelsQuad-channelQuad-channel
ECCYesYes
Graphicsidentical
On-board graphics cardNoNo
Featuresidentical
Execute Disable BitYesYes
Idle StatesYesYes
Thermal Monitoring TechnologiesYesYes
Market segmentServerServer
Maximum number of PCI Express lanes4040
PCI Express slots version3.03.0
Embedded options availableNoNo
ScalabilityS2SS2S
Processor special featuresidentical
Enhanced Intel SpeedStep TechnologyYesYes
Intel Flex Memory AccessYesYes
Intel Trusted Execution TechnologyYesYes
Intel® AES New Instructions (Intel® AES-NI)YesYes
Intel® Hyper Threading Technology (Intel® HT Technology)YesYes
Intel® Turbo Boost TechnologyYesYes
Intel Demand Based SwitchingYesYes
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® vPro™ Platform EligibilityYesYes
Operational conditions1 differ
TcaseDiffers73 °C77.4 °C
Other features1 differ
Intel® Virtualization Technology (Intel® VT)VT-d, VT-xVT-d, VT-x
CompatibilityDiffersHP Z620HP Z820

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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