A few years back, Antmicro introduced the first DDR5 capable platform to the open source FPGA-based Rowhammer research framework developed in cooperation with Google - the Data Center RDIMM DDR5 Tester . The follow-on SO-DIMM (LP)DDR5 Tester later extended the framework’s coverage to both SO-DIMM DDR5 modules and LPDDR5. In this article, Antmicro introduces and provides an overview of a new revision of the RDIMM DDR5 Tester employing a more recent AMD Artix UltraScale+ XCAU25P FPGA as compared to Kintex-7 series used in the previous revision.