I've never heard of anything like this. While it sounds cool I'm not sure how much it would really help the reindexing process as the main limitation is the hard drive speed. An upgrade to SSD or RAID array is the way to go if you want to increase your reindex and sync speed.
Okay, thanks. I thought it may have been a function of recalculating the blocks something like checking finished work as compared to running hashes on blocks for a more elegant solution and having almost all not best.
So, reindexing and syncing on a 3GHz machine compared to a 2GHz machine, both machines having identical drives the 3GHz won't finish appreciably faster than the 2GHz machine? How about compared to an 800MHz RPI and that identical drive mounted via USB?