A deduplication memory module, which is configured to internally perform memory deduplication, includes a hash table memory for storing multiple blocks of data in a hash table array including hash tables, each of the hash tables including physical buckets and a plurality of virtual buckets each including some of the physical buckets, each of the physical buckets including ways, an address lookup table memory (ALUTM) including a plurality of pointers indicating a location of each of the stored blocks of data in a corresponding one of the physical buckets, and a buffer memory for storing unique blocks of data not stored in the hash table memory when the hash table array is full, a processor, and memory, wherein the memory has stored thereon instructions that, when executed by the processor, cause the memory module to exchange data with an external system.