Well, I used ATT0 disk manager and found that im bursting up to 230 mb/sec on both read and write so I am going to assume the Available just means there is no more space left after caching. Which would seem righ, I just didn'tknow.. no place actually said what Available Space they are talking about.
Compared to IDE drives running 45 mb/s and Sata1 at 120 mb/sec I guess I am convinced it is working? I must say.. I5 2500k, z68 mb, HD , SSD and win7 64 has won me over. This is without the fastest system "I" ever owned and everything just feels "right". Sooo Intel.. Im back! More that went the AMD route might/should look back to Intel once again. Good utility.. good direction.. one of the easiest setups I ever made.