| abstract |
A memory system includes a plurality of first memory chips connected to a first bus, a plurality of second memory chips connected to a second bus, and a controller that is connected to the first and second buses and configured to execute a write operation by performing processes that include selecting one of the plurality of first memory chips based on first information including data reading speed information and/or data writing speed information for the plurality of first memory chips, and selecting one of the plurality of second memory chips based on second information including data reading speed information and/or data writing speed information for the plurality of second memory chips. |