HP2-H36 · Question #34
Which type of memory is compatible with HP Z440, Z640, and Z840 workstations?
The correct answer is D. DDR4. DDR4 is correct because the HP Z440, Z640, and Z840 workstations are built on Intel's Haswell-EP/Broadwell-EP Xeon E5-2600 v3/v4 platform (released ~2014–2015), which requires DDR4 ECC registered memory - these machines do not physically accept earlier memory types due to…
Question
Which type of memory is compatible with HP Z440, Z640, and Z840 workstations?
Options
- ADDR1
- BDDR2
- CDDR3
- DDDR4
How the community answered
(51 responses)- A4% (2)
- B6% (3)
- C2% (1)
- D88% (45)
Explanation
DDR4 is correct because the HP Z440, Z640, and Z840 workstations are built on Intel's Haswell-EP/Broadwell-EP Xeon E5-2600 v3/v4 platform (released ~2014–2015), which requires DDR4 ECC registered memory - these machines do not physically accept earlier memory types due to different key notch positions and incompatible voltage/signaling requirements. DDR1 (A) and DDR2 (B) are obsolete standards from the early-to-mid 2000s, predating these workstations by a decade and running at much lower speeds and voltages. DDR3 (C) is a closer distractor since it overlapped in the market, but the Z-series workstations of this generation skipped DDR3 in favor of DDR4's higher bandwidth and efficiency needed for professional workloads.
Memory tip: Associate the HP Z x40-series (Z440/Z640/Z840) with the number 4 - the "4" in the model suffix hints at DDR4. When you see workstations released around 2014–2016 with Xeon v3/v4 CPUs, think DDR4.
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