AmorphousMemoryMark 3.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app is a product of Katsura Shareware. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
AmorphousMemoryMark measures the memory read/write performance in GB/s. The tests include sequential and random reads/writes at various sizes with various memory instructions, intervals, and more. The results are given in GB/s. The utility also provides details about the installed memory.