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Product comparison · 2 pcs/workstations

HP Z400 Quad-Core Xeon W3565 + NVIDIA Q4000 + ZR2740w (WM418ET+WS095ET+XW476AT) vs HP Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT)

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  • 98specifications compared
  • 23differ
  • 75identical
  • 5known for one product only

Key differences

The HP Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT) has 2 more processor cores than the HP Z400 Quad-Core Xeon W3565 + NVIDIA Q4000 + ZR2740w (WM418ET+WS095ET+XW476AT) (6 vs 4). The HP Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT) has 4 more processor threads than the HP Z400 Quad-Core Xeon W3565 + NVIDIA Q4000 + ZR2740w (WM418ET+WS095ET+XW476AT) (12 vs 8). The HP Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT) has 0.14 GHz more processor boost frequency than the HP Z400 Quad-Core Xeon W3565 + NVIDIA Q4000 + ZR2740w (WM418ET+WS095ET+XW476AT) (3.6 GHz vs 3.46 GHz). Only the HP Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT) has card reader integrated. Only the HP Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT) has Intel Trusted Execution Technology.

  • Processor model
    • W3565
    • W3680
  • Processor cores
    • 4
    • 6
  • Processor threads
    • 8
    • 12
  • Processor boost frequency
    • 3.46 GHz
    • 3.6 GHz
  • Processor frequency
    • 3.2 GHz
    • 3.33 GHz
  • Processor cache
    • 8 MB
    • 12 MB
  • System bus rate
    • 4.8 GT/s
    • 6.4 GT/s
  • Processor lithography
    • 45 nm
    • 32 nm

Side by side

Differences highlightedShow differences only
103 specifications
A

HP

Z400 Quad-Core Xeon W3565 + NVIDIA Q4000 + ZR2740w (WM418ET+WS095ET+XW476AT)View product
B

HP

Z400 Six-Core Xeon W3680 + NVIDIA Q4000 + ZR2740w (KK787ET+WS095ET+XW476AT)View product
Processor14 differ
Processor manufacturerIntelIntel
Processor familyIntel® Xeon® 3000 SequenceIntel® Xeon® 3000 Sequence
Processor modelDiffersW3565W3680
Processor coresDiffers46
Processor threadsDiffers812
Processor boost frequencyDiffers3.46 GHz3.6 GHz
Processor frequencyDiffers3.2 GHz3.33 GHz
Processor cacheDiffers8 MB12 MB
Processor cache typeSmart CacheSmart Cache
Bus typeQPIQPI
FSB ParityNoNo
System bus rateDiffers4.8 GT/s6.4 GT/s
Processor lithographyDiffers45 nm32 nm
Processor operating modes64-bit64-bit
Processor seriesDiffersIntel Xeon 3500 SeriesIntel Xeon 3600 Series
Processor codenameDiffersBloomfieldWestmere EP
Thermal Design Power (TDP)130 W130 W
Number of QPI links11
Number of processors installed11
Processor socketSocket B (LGA 1366)Socket B (LGA 1366)
Number of Processing Die TransistorsKnown for one731 M
Processing Die sizeKnown for one263 mm²
CPU multiplier (bus/core ratio)Differs2425
SteppingDiffersD0B1
Maximum internal memory supported by processor24 GB24 GB
Memory types supported by processorDDR3-SDRAMDDR3-SDRAM
Memory clock speeds supported by processorDiffers800,1066 MHz800,1066,1333 MHz
Memory bandwidth supported by processor (max)Differs25.6 GB/s32 GB/s
ECC supported by processorYesYes
TcaseKnown for one67.9 °C
Memory1 differ
Internal memoryDiffers12 GB6 GB
Internal memory typeDDR3-SDRAMDDR3-SDRAM
Memory slots6x DIMM6x DIMM
Memory clock speed1333 MHz1333 MHz
ECCYesYes
Memory channelsTriple-channelTriple-channel
Storage3 differ
Optical drive typeDVD Super MultiDVD Super Multi
Total HDDs capacityDiffers1 TB1.5 TB
Number of HDDs installed11
HDD capacityDiffers1 TB1.5 TB
HDD interfaceSATASATA
HDD speed7200 RPM7200 RPM
Card reader integratedDiffersNoYes
Graphicsidentical
Graphics cardNoNo
Performanceidentical
Product typeWorkstationWorkstation
Motherboard chipsetIntel® X58 ExpressIntel® X58 Express
Networkidentical
Networking featuresGigabit Ethernet (10/100/1000)Gigabit Ethernet (10/100/1000)
Ports & interfacesidentical
USB 2.0 ports quantity1212
Ethernet LAN (RJ-45) ports11
Headphone outputs11
Microphone inYesYes
PS/2 ports quantity22
Firewire (IEEE 1394) ports11
Poweridentical
Power supply475 W475 W
Designidentical
Chassis typeMinitowerMinitower
Country of originChinaChina
Softwareidentical
Operating system installedWindows 7 ProfessionalWindows 7 Professional
Operating system architecture64-bit64-bit
Displayidentical
Display includedYesYes
Display diagonal68.6 cm (27")68.6 cm (27")
Resolution2560 x 1440 pixels2560 x 1440 pixels
Processor special features5 differ
CPU configuration (max)11
Embedded options availableNoNo
Enhanced Intel SpeedStep TechnologyYesYes
Execute Disable BitYesYes
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 Rapid Storage TechnologyNoNo
Intel Trusted Execution TechnologyDiffersNoYes
Intel VT-x with Extended Page Tables (EPT)YesYes
Intel Virtualization Technology (VT-x)YesYes
Intel Virtualization Technology for Directed I/O (VT-d)NoNo
Intel® AES New Instructions (Intel® AES-NI)DiffersNoYes
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® Smart CacheKnown for oneYes
Intel® Wireless Display (Intel® WiDi)NoNo
Physical Address Extension (PAE)DiffersYes36 bit
Processor ARK IDDiffers3972147917
Processor codeKnown for oneSLBEV
Processor package sizeDiffers42.5 x 45.0 mm42.5 X 45 mm
Supported instruction setsSSE4.2SSE4.2
Thermal Monitoring TechnologiesNoNo
Intel® Turbo Boost Technology1.01.0
Intel® Hyper Threading Technology (Intel® HT Technology)YesYes
Intel® Quick Sync Video TechnologyNoNo
Intel® My WiFi Technology (Intel® MWT)NoNo
Intel® Anti-Theft Technology (Intel® AT)NoNo
Conflict-Free processorNoNo
Audioidentical
Audio systemHigh Definition AudioHigh Definition Audio
Weight & dimensionsidentical
Width167.9 mm167.9 mm
Depth455.3 mm455.3 mm
Height450.2 mm450.2 mm
Weight13.5 kg13.5 kg

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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