AMD EXPO 1.2 could supercharge Ryzen CPUs with CUDIMM support amid global DRAM crunch — full AMD CUDIMM support is on the horizon

HWiNFO, a popular system monitoring and diagnostics utility, just added support for AMD EXPO 1.2 overclocking profiles, kicking off a wave of speculation about improved support for the best RAM on the market today.. According to renowned AMD utility developer 1usmus, EXPO 1.2 is set to finally unlock CUDIMM support for AMD Ryzen processors — some of the best CPUs.

DDR5 blazes past speed limits by tapping into client clock driver (CKD) chips—paving the way for cutting-edge CUDIMMs. Without getting too deep into the technical details, the CKD acts as a signal booster. It helps keep the signals strong and clear, allowing CUDIMMs to run faster and more reliably than standard DIMMs. It allows memory manufacturers to push DDR5 speeds even higher.

Intel was the first chipmaker to embrace CUDIMMs with its Core Ultra 200S (codenamed Arrow Lake) processors, giving PC enthusiasts a taste of next-generation memory. On AMD platforms, however, CUDIMMs have operated in bypass mode—stripping away the high-speed advantages that CKD technology promises. While AMD previously confirmed that its AM5 platform is ready for full CUDIMM support, it has not revealed when the feature will arrive. Now, with the unexpected debut of EXPO 1.2, proper support may finally be on the horizon.

Although AMD's AM5 platform is physically compatible with CUDIMMs, full support likely won't arrive until the next-generation 900-series chipsets launch alongside Zen 6 processors. According to expert 1usmus, AMD needs to optimize the CA bus—the control artery responsible for carrying commands and status signals between the processor and other components. Upgrading this internal “expressway” is key to unlocking the blistering speeds of CUDIMMs, which are already racing toward the DDR5-10000 milestone.

Intel’s Arrow Lake processors paved the way for CUDIMMs with native support for DDR5-6400 CUDIMMs, with the Arrow Lake Refresh lineup expected to boost that standard to DDR5-7200. Nova Lake will likely raise the bar even higher, perhaps explaining why AMD is strategically preparing EXPO 1.2 for its upcoming Zen 6 chips. While not all high-speed memory kits require a CKD to reach impressive speeds, the presence of a CKD is a game-changer for achieving rock-solid stability and performance at the highest data rates.

Amid today’s turbulent memory market, AMD is wisely biding its time on CUDIMM support. Ongoing shortages, fueled by unrelenting demand from AI and hyperscale data centers, have pushed memory kit prices even higher—and there’s no relief in sight. Industry experts predict these sky-high prices may not ease until 2027 or even 2028. With Zen 6 expected to debut in late 2026 or early 2027, AMD has a window to see DDR5 prices stabilize before its next major launch.