Corsair
DDR4 · 2666 MT/s · CL16 · 4×16GB
Lowest price in DE across retailers
Vengeance LPX is the plain-clothes member of Corsair's DDR4 range: an aluminium heatspreader kept deliberately short so it clears the tower coolers that foul taller kits, sold across more speed and capacity permutations than almost anything else on the market. That breadth is the reason it shows up in so many builds, and also the reason two kits with the same name on the box can behave quite differently.
This is the 4×16GB configuration, rated 2666 MT/s CL16. Within this family the timings are what separate the listings — the same 64GB is sold at several speed grades, and the cheaper end of the range is usually a slower bin rather than a different product. Check the XMP profile your board will actually apply before paying for a higher rating.
All DDR4 in this family is unbuffered, non-ECC UDIMM for consumer desktop boards. It will not work in a system that requires registered or ECC memory.
Vengeance LPX earns its long shelf life through breadth and a low-profile heatspreader, not through any single standout spec — the timing bin on the specific listing is what actually decides whether a given kit is a good buy.
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.
A dying memory generation does not get cheaper on its way out — it gets more expensive, because the economics of end-of-life manufacturing are the opposite of the economics of a maturing one.
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.
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.
A 2x16GB kit sits at the highest-volume point on the memory market, and volume is what actually sets price per gigabyte — not capacity, and not how new a kit's specification is.