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DDR4-2666 Server Memory

Key takeaways

  • 2,042 listings match this collection right now.
  • DDR4-2666 modules run at a JEDEC-defined CL19 latency, looser than the tighter timings JEDEC sets for the faster 2933 and 3200 speed grades.
  • Single-socket Xeon E3 platforms from this same era topped out at DDR4-2400 unbuffered memory, below the 2666 speed the two-socket registered platforms of the time reached.
  • DDR4-2666 modules span capacities from single-rank 8GB and 16GB builds up to quad-rank LRDIMM parts at 64GB and beyond, all sharing this one speed grade.

DDR4-2666 (PC4-21300) is the speed grade of first-generation Xeon Scalable and EPYC Naples platforms. Modules at this grade also run at 2400 in Xeon E5 v4 systems, whose memory controllers top out at DDR4-2400. It is the largest DDR4 speed grade in the catalogue by part count.

2,042 listings in this collection, filtered from Server Memory. The part number and manufacturer are stated on every listing, and the condition wherever the catalogue records one. For quantity, request a volume quote.

Items 697-708 of 2042

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Hynix HMA84GR7AFR4N-VKTF-AA 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKTF-AA 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Hynix HMA84GR7AFR4N-VKTF-AD 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKTF-AD 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Hynix HMA84GR7AFR4N-VKTF-AB 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKTF-AB 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Dell 0VM51C 16GB DDR4-2666MHz RDIMM 2Rx8 CL19 Memory

Dell 0VM51C 16GB DDR4-2666MHz RDIMM 2Rx8 CL19 Memory

$229.68$270.21
Kingston KTH-PL426S8/8G 8GB DDR4-2666MHz RDIMM 1Rx8 CL19 Memory

Kingston KTH-PL426S8/8G 8GB DDR4-2666MHz RDIMM 1Rx8 CL19 Memory

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Kingston KSM26RS8/8MEI 8GB DDR4-2666MHz RDIMM 1Rx8 CL19 Memory

Kingston KSM26RS8/8MEI 8GB DDR4-2666MHz RDIMM 1Rx8 CL19 Memory

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Hynix HMA84GR7AFR4N-VKTN 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKTN 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Hynix HMA84GR7AFR4N-VKTF 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKTF 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Hynix HMA84GR7AFR4N-VKTD 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKTD 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Hynix HMA84GR7AFR4N-VKT3 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

Hynix HMA84GR7AFR4N-VKT3 32GB DDR4-2666MHz RDIMM 2Rx4 CL19 Memory

$338.58$398.33
Lenovo 01AG617 8GB DDR4-2666MHz RDIMM 1Rx4 CL19 Memory

Lenovo 01AG617 8GB DDR4-2666MHz RDIMM 1Rx4 CL19 Memory

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HP 874540-001 16GB DDR4-2666MHz NVDIMM 1Rx4 CL19 Memory

HP 874540-001 16GB DDR4-2666MHz NVDIMM 1Rx4 CL19 Memory

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How to choose server memory

DDR3, DDR4 and DDR5 modules are keyed differently and do not interchange, so the generation your platform accepts comes first. Registered (RDIMM), load-reduced (LRDIMM) and unbuffered (UDIMM) modules cannot be mixed in one system: add the type already installed, or replace the full bank. Match rank and speed to the existing modules, and read an installed part number from iDRAC or iLO when in doubt.

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