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Green rectangular RAM module with gold contacts and black chips

Crucial

Crucial DDR4 RDIMM 8GB 1Rx8 2933 CL21 ECC desktop RAM

SKU CH-Q6J7-86CBQ

DDR4 RDIMM module delivering 8 GB of ECC-protected desktop memory at 2933 MHz CL21

  • ECC protection safeguards data integrity with registered architecture
  • 2933 MT/s transfer rate supports responsive system performance
  • CL21 latency timing optimises memory access efficiency
  • 2 V operating voltage reduces power consumption
  • 1Rx8 single-rank organisation enables flexible capacity scaling

What this module is and who it suits

This is an 8 GB DDR4 RDIMM built for desktop platforms that require registered ECC memory. It is intended for workstations or servers that use a registered DIMM topology and need single-bit error correction for data integrity. Buyers whose systems accept only unbuffered non-ECC UDIMMs cannot use this module.

What to confirm before ordering

Verify that your motherboard and CPU combination explicitly supports registered ECC DDR4 memory at 2933 MT/s with a CAS latency of 21. The module runs at the standard 1.2 V and presents a 72-bit wide interface, so the platform must be wired for ECC operation. Mixing registered and unbuffered DIMMs on the same board will prevent the system from posting.

Behaviour under sustained load

The RDIMM register buffers each command, reducing electrical load on the memory controller during continuous read and write streams. This helps maintain the rated 2933 MT/s data rate and CL21 timing when the system runs memory-intensive workloads for extended periods. ECC circuitry corrects single-bit errors on the fly, preventing silent data corruption during long compute jobs.

Highlights

  • ECC protection safeguards data integrity with registered architecture
  • 2933 MT/s transfer rate supports responsive system performance
  • CL21 latency timing optimises memory access efficiency
  • 2 V operating voltage reduces power consumption
  • 1Rx8 single-rank organisation enables flexible capacity scaling

Specifications

No published specifications for this item yet.

Questions about this item

Does the 8 GB DDR4 RDIMM ship as a single module or do I need to buy anything else to install it?

The module is supplied as a single 8 GB stick; no brackets, cables or additional parts are included.

How do I decide between the 1Rx8 2933 CL21 variant and other capacities or ranks?

Choose this 1Rx8 2933 CL21 module when your board requires registered ECC DDR4 at that speed and latency; match the total capacity to your motherboard’s maximum and slot count.

What does the 2933 MT/s rating mean for everyday performance once the RAM is installed?

At 2933 MT/s with CL21 timing the memory delivers standard DDR4 bandwidth for typical desktop workloads.

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