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Four green DDR4 memory sticks, black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 64GB (4x16GB) DDR4 2400 ECC Registered DIMM Z840 C126

SKU CH-WY2H-4YA5C

Four 16 GB DDR4 registered ECC DIMMs at 2400 MHz CL17 and 1.2 V, tested for the HP Z840 workstation

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Timing17-17-17
  • Voltage1.2V
  • 64 GB total capacity from four 16 GB modules
  • ECC registered design protects data integrity in servers
  • DDR4 2400 MHz speed rated at PC4 19200
  • CL17 17-17-17 timings at 1.2 V operation
  • Validated for HP Z840 workstation compatibility

64GB DDR4 ECC Registered Kit

This 64GB kit contains four 16GB DDR4 ECC Registered DIMMs rated at 2400MHz with CL17 timings. It is built specifically for the HP Z840 workstation platform where registered memory is required. The modules operate at 1.2V and use a 288-pin interface with a 2Rx8 rank configuration.

Tool-free DIMM installation

Installation follows the Z840 service guide: populate white DIMM slots first for one DIMM per channel. The processor determines the final clock speed; an 1866MHz capable CPU will limit these modules to 1866MHz. Mixing registered and unbuffered DIMMs is not supported and will prevent boot.

64GB of 512GB maximum capacity

The Z840 supports up to 512GB using registered ECC RDIMMs across 16 total sockets with dual CPUs. This 64GB kit fills four slots and leaves ample headroom for future expansion. Systems requiring more than 512GB or load-reduced DIMMs will need a different memory type.

Pluspunten

  • 64 GB total capacity from four 16 GB modules
  • ECC registered design protects data integrity in servers
  • DDR4 2400 MHz speed rated at PC4 19200
  • CL17 17-17-17 timings at 1.2 V operation
  • Validated for HP Z840 workstation compatibility

Specificaties

BrandComputer Memory Solutions
ModelCM2048722400ECCR
Capacity64GB (4 x 16GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Timing17-17-17
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemHp/Compaq Workstation Z840
Package Content4 Memory RAM Sticks

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How can I verify the memory is running at 2400MHz after installing it in my Z840?

Check the system BIOS or UEFI memory information screen; it will report the configured speed. The processor determines the maximum clock — if an 1866MHz-capable CPU is installed the modules will run at 1866MHz instead.

What comes in the box and is anything else required for installation?

The package contains four 16GB DDR4 288-pin ECC Registered DIMM modules. No additional parts are needed; install them into the white DIMM slots first for one DIMM per channel population.

Which kit should I choose if I want to reach the Z840 maximum of 512GB with Registered ECC?

This 64GB (4×16GB) kit is one building block. The Z840 supports up to 512GB using Registered ECC RDIMMs across 16 sockets with two CPUs, so add matching kits until you reach the desired total.

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