Micron
DDR5 · 6400 MT/s · CL52 · 1×64GB
Lowest price in US across retailers
Last updated Sep 17, 2026
Out of stock in US
Micron DDR5-6400 ECC RDIMM 1x64GB price history in US: current low $2,719.99, 12-month low $556.00, 12-month median $2,433.73.
Great time to buy — current price is 15% below the 3-month median.
Micron sells DDR5 RDIMM directly under its own name as well as through its Crucial consumer brand, and this is the former — enterprise-channel memory aimed at server and data-centre boards rather than the retail desktop market.
This one is 1×64GB, 64GB, rated 6400 MT/s CL52. As the manufacturer of the DRAM itself, Micron's own-branded modules are generally validated closely against the server platforms they're sold for, so the qualified vendor list on the specific board is still the reference point to check rather than the rated speed alone.
All memory in this family is ECC RDIMM, registered for server boards built to take buffered memory — not a fit for a standard desktop socket.
Crucial Pro trades looks for a compatibility-first, overclocking-headroom pitch, and within this 6400 MT/s grade, CAS latency -- not the shared headline speed -- is the number that actually separates one listing from another.
FURY Beast at 6000 spans three CL grades under one name plus a four-module 64GB option its 5600 sibling doesn't offer, which makes matching the exact SKU more important here than with most families.
DDR5 doubled the bandwidth and moved power regulation onto the module. Whether that is worth paying for depends entirely on which platform you are building.
Flare X5 is a heatspreader-only DDR5-6000 line built for clearance-constrained builds, and within this 6000 MT/s grade every listing shares that one headline speed — the CL bin and capacity are the only things actually separating listings.
16 GB is no longer comfortable, 32 GB is the sensible default, and 64 GB is a workload decision rather than a future-proofing one.
CAMM2 and SODIMM are physically incompatible laptop memory formats. The difference is not speed at a given rating but how many channels each module carries, how the module attaches, and whether a machine can ever add memory rather than replace it.