An embodiment of the invention discloses a memory extending
system and a memory extending method. The
system comprises processors, extended memories, extended chips and multiple processor installation positions, and a memory installation position is arranged at each process installation position; the processor installation positions are connected mutually through QPI (
quick path interconnect) interfaces, at least one processor installation position is provided with a processor, and at least one of the rest installation positions serves as extended installation position; the extended chips are installed in the extended installation position; the extended memories are installed to the memory installation positions connected with the extended chips. The memory extending
system has the advantages that the extended chips are mounted at other processor installation positions to replace the processors, and the existing processors are enabled to be capable of accessing the extended memories carried by the extended chips through the extended chips, so that memory capacity of the existing processors is increased on the condition that
processing capacity is not improved, and the problem of
processing capacity redundancy caused by the fact that memories are extended by adding processors in the prior art is solved.