This integer reports the memory transfer rate in megatransfers per second (MT/s) for the attached cache module, returning -1 if it can't be calculated or isn't supported. An admin uses this alongside memory data width to assess the raw throughput capability of a controller's cache hardware. For example, a much lower cpqDaAccelMemoryTransferRate on one controller versus another in the same environment might explain a cache-bound performance difference between two otherwise similar servers.