RDIMM DDR3-1866 PC3-14900

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This page lists DDR3-1866 PC3-14900 ECC Registered DIMM (RDIMM) — 240-pin, 1.5V (1.35V for DDR3L), ECC, with a register buffering the command and address lines so servers can populate more slots per channel at full speed. DDR3-1866 runs at 1866MT/s (1866MHz data rate) for 14.9 GB/s of bandwidth per channel.

What is on this page

Single modules from 4GB to 32GB (4GB, 8GB, 16GB and 32GB), in 1Rx4, 1Rx8, 2Rx4, 2Rx8, 4Rx4 and 4Rx8 rank configurations, plus matched kits up to 512GB total. Use the Module Density, Kit and Rank filters to narrow the list, or Shop by System Model to jump straight to modules matched to a specific machine.

Where DDR3-1866 RDIMM is used

DDR3-1866 RDIMM is commonly paired with Intel Xeon E5-2600 v2 (Ivy Bridge-EP) platforms running memory at full 1866MT/s, including the 2013 Apple Mac Pro. On this page the system-matched listings cover Cisco UCS. Every part carries the OEM part number it replaces, so a DDR3-1866 order written against a Dell, HPE, Lenovo, Cisco or Supermicro part number can be matched line for line.

Choosing the right RDIMM module

RDIMM and LRDIMM cannot be mixed in the same system. Within RDIMM, match rank organization (1Rx4, 2Rx4, 2Rx8) to what the platform already runs where possible — mixed ranks are usually supported but can lower the effective speed. A DDR3-1866 module in a platform rated for a slower speed clocks down to the platform's speed; a slower module in a DDR3-1866 platform pulls every channel down to the slower speed. If you are unsure, send us the system model or the OEM part number and we will confirm fitment before you order.

Buying DDR3-1866 RDIMM direct from NEMIX RAM

NEMIX RAM is a US-based server memory specialist since 1993. Every module is researched, matched and compatibility-tested by NEMIX RAM, JEDEC-compliant, and backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available for business, government and education buyers — request a quote with the part numbers or system models you need, or contact our sales team for fitment help.