The Ram expansion will not affect loading time, whether you have one of the first off of the production line or the last ones, loading time will be the same. The user ram is only for working with sampled sounds. It is not used for any other purpose unlike your computer which runs programs and operations in memory. The reason a computer starts to slow down is that once it fills available memory it has to use the hard drive as virtual memory, the Audya does not need to do this as it has ample dedicated system ram which is not accessible by the user.

The user ram is one of the most 'misunderstood' aspects of the Audya and has been incorrectly targeted by critics even before the keyboard was released.