Kingston FURY Beast RGB 128GB Kit (4x32GB) DDR5-5200 CL40 Desktop Memory DIMM, 1.25V, Intel XMP

The Kingston FURY Beast RGB KF552C40BBAK4-128 is a 128GB Kit (4x32GB) 288-pin unbuffered DDR5 desktop DIMM rated at 5200 MT/s with CL40 latency at 1.25V, for gamers, creators and power users building or upgrading a DDR5 desktop.

It comes as 4 matched modules of 32GB, giving 128GB in total and up to 41.6 GB/s of peak bandwidth per module (PC5-41600). DDR5 splits every module into two independent sub-channels and runs at far higher transfer rates than DDR4, which helps frame times in CPU-bound games and shortens compile, render and export jobs.

Typical uses: a new AM5 or Intel 600/700/800-series gaming build, a streaming or editing PC that needs headroom, or replacing a smaller DDR5 kit with 128GB so that games, browser, chat and capture software can all stay open without the system paging to disk.

• 4 × 32GB DDR5 DIMM modules (128GB matched kit, tested together)
• Manufacturer packaging — memory installs tool-free into the slot, no cables or drivers needed (RGB control software is a free download from the manufacturer)

• Out of the box it boots at 4800 MT/s CL40 at 1.1V. Enabling XMP in BIOS is a one-click setting that loads the rated 5200 MT/s CL40 profile — the final speed depends on your CPU’s memory controller and motherboard.
• Four modules fill all four slots of a typical desktop board. With four DDR5 modules many platforms lower the achievable speed, so the kit is rated at a conservative 5200 MT/s for that reason.
• 128GB is workstation-class capacity for 4K/8K video, large datasets, simulation and several virtual machines at once.
• Height matters with large tower air coolers: at 42.23 mm check the clearance under your cooler’s front fan.
• Installation takes a few minutes: power off and unplug the PC, open the side panel, release the slot latches and press each module straight down until the latches click shut on both ends.
• After installation, Windows Task Manager (Performance → Memory) shows the total capacity, the speed in MT/s and how many slots are used — a quick way to confirm everything is detected.

• DDR4 or DDR3 motherboards — DDR5 is keyed differently and physically will not fit
• Laptops and mini PCs that take SO-DIMM memory
• Servers that require registered (RDIMM) ECC memory — this is non-ECC unbuffered memory
• Combining two kits for more modules — memory makers test kits as a set and do not guarantee the rated speed with mixed kits