HP Z640 Workstation system board riser architecture
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Dark blue slots are attached to CPU0 and available with CPU0.
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Purple and gray slots are attached to PCH.
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White slots are attached to CPU1 and available when CPU1 is installed.
HP Z640 Workstation specifications
Processor
technology
Intel Series C612 chipset:
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Support for the Intel Xeon Processor E5-1600 Series and E5-2600 Series
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Integrated 4-channel memory controller
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Microarchitecture improvements
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Large L3 cache for superior performance
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Intel QuickPath Interconnect (QPI) connects processors and I/O controller with speeds up to 9.6 GT/s
Power supply
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925 W Gold, 90% efficient, wide-ranging, active Power Factor Correction, two auxiliary dongles on two
separate 12V rails, ERP 0.5W, Built-in-Self Test (BIST)
Memory
technology
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Dual in-line memory modules (DIMMs) based on DDR4 2133 MHz technology
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Error checking and correcting (ECC)-protected
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Eight direct-attach memory channels (four per processor) enable low-latency access and fast data
transfer for improved performance
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Configurations with one processor have four DIMM slots; a second processor adds four more DIMM
slots
HP Z640 Workstation components 13
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