write-back cache a caching method in which modifications to data in the cache aren't copied to the cache source until absolutely necessary. write-through cache performs all write operations in PARALLEL -- data is written to MAIN memory and the L1 cache simultaneously.

Write-back caching yields somewhat better performance than write-through caching because it reduces the NUMBER of write operations to main memory. With this performance improvement comes a slight risk that data may be lost if the system CRASHES.

write-back cache a caching method in which modifications to data in the cache aren't copied to the cache source until absolutely necessary. write-through cache performs all write operations in parallel -- data is written to main memory and the L1 cache simultaneously.

Write-back caching yields somewhat better performance than write-through caching because it reduces the number of write operations to main memory. With this performance improvement comes a slight risk that data may be lost if the system crashes.