Thursday, September 6th 2018

Samsung Ready with 32GB DDR4 UDIMMs for Desktops, Paving the Way for 16GB Single-Rank

Samsung is ready with a 32 GB DDR4 UDIMM (unbuffered DIMMs) targeted at desktops. Dual-channel kits with these modules could let you max out the 64 GB memory limit of today's mainstream desktop processors, and 128 GB limits of Intel's Core X HEDT processors, with quad-channel kits. AMD's Ryzen Threadripper processors are advertised to support up to 2 TB of memory (including ECC support), so it should finally be possible to pack up to 256 GB of memory on Threadripper-powered machines.

The new M378A4G43MB1-CTD DDR4 UDIMM from Samsung is, unsurprisingly, a dual-rank module (x8 / x16 Organization or up to 2 ranks per DIMM and 2DPC configuration). It ticks at DDR4-2666 at a module voltage of 1.2 V. The module itself won't be much to look at, with a green PCB and bare-naked DRAM chips. It is is currently sampling to PC OEMs. It could also be possible for more popular memory manufacturers to get in touch with Samsung for the DRAM chips that make up this module. A single-rank variant of this module could finally make it possible for AMD Ryzen AM4 machines to have 32 GB of dual-channel memory at acceptably high memory clocks.
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