The 2024 Intel Xeon “Granite Rapids” will support MCR RAM

Taking advantage of the ISC HPC event for high performance computing, Intel has unveiled some new details of its Intel Xeon “Granite Rapids” processors. These processors, which we have already seen in operation in demos in the past, will arrive throughout 2024 and will be manufactured with the process of your intel Advanced Node 3, being the first processors with high-performance cores or “P-Cores“, manufactured with this technology. In fact, these processors are performance-oriented and will only have this type of high-performance cores.

One of the novelties that they will bring to the market for servers and high-performance computing systems is support for MCR (Multiplexer Combined Ranks) RAM. It is a technology developed that promises to achieve the fastest DDR5 memory for servers in the world.

MCR DIMMs increase peak bandwidth by 83%

This technology combines two “ranks”, which are sets of memory chips interconnected with each other and accessed at the same time, with a data buffer. If in each rank we have a 64-byte bus, by interconnecting them by means of a data bus that multiplexes them, we have a final 128-byte bus.

The biggest advantage of MCR DIMMs is that they achieve more bandwidth with the same capacity as conventional two-rank (64+64) RDIMMs.

They reach speeds of up to 8,800 MT/s or 8.8 Gbps and are capable of offering a bandwidth of more than 1.5 TB/s in systems equipped with two Intel Xeon Granite Rapids processors. This supposes a 83% more peak bandwidth than traditional modules.

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