It offers pretty fast compression and very fast decompression.
Decompression requires no memory.
In addition there are slower compression levels achieving an excellent compression ratio while still decompressing at this very high speed. The speed of the decompressor is not reduced. NRV supports overlapping compression and in-place decompression. NRV is the successor of the LZO compression library. NRV's main design goal was a very high decompression speed while achieving an excellent compression ratio.