Lexar
DDR5 · 6400 MT/s · CL32 · 2×16GB
Lowest price in DE across retailers
Lexar's ARES RGB kits in this family are sold at a fixed 32GB — the two listings differ only in which CAS latency bin they were built to, not in how much memory they carry. That makes this one of the more direct kit-to-kit comparisons in the catalogue.
This one runs 6400 MT/s at CL32, as 2×16GB. A tighter CAS number at the same 6400 MT/s generally means less latency per memory access, so between two otherwise-identical 32GB kits, the CL32 figure is the one worth reading closely rather than treating both listings as interchangeable.
This is UDIMM DDR5 for desktop boards with RGB support; the lighting runs through the motherboard's own software, and 6400 MT/s still requires the XMP or EXPO profile to be enabled rather than left at its default.
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.
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.
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.
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.
Capacity avoids stutter caused by running out of memory; speed affects how efficiently the CPU feeds data to the GPU. They solve different problems, and buying enough of the first one before spending on the second is the right order.