AMD’s Explosive DDR5 Patent Could Double Your RAM Speed – But Don’t Hold Your Breath
In-Depth Report: Double DDR5 Bandwidth on the Horizon? 1. The patent and how it works. Late September 2025, AMD was spotted filing a patent for what it calls a “High-Bandwidth DIMM” for DDR5 memory pcgamer.com tech4gamers.com. According to the filing, each HB-DIMM has extra buffer chips plus a smart controller (an RCD) on the DIMM. The RCD decodes addresses and commands, and uses a chip-identifier bit to steer signals into two separate pseudo-channels of DRAM on the same module tech4gamers.com pcgamer.com. Because of this, the module can transmit data at twice the normal per-pin rate. In practice, AMD’s example shows
