There were two models of the 1620, each having totally different hardware implementations:

It is based on the same architecture as the Origin 2000 but has an unrelated hardware implementation.

It also requires specific hardware implementation, which had more significant costs in earlier days of computing (i.e., 1960s and 70s).

This is expected to be more convenient for hardware implementations.

However, in hardware implementations it is notably faster than all other finalists.

This way users can check out the validity of new algorithms prior to hardware implementation.

If this hardware implementation proves successful, it could be the first of many.

The demonstrated attack only works against a particular hardware implementation.

Narrow-block algorithms have the advantage of more efficient hardware implementation.

Rijndael was designed, in fact, with hardware implementation in mind.