I was reading a bit about this on wiki
Hard Disk -> Data transfer rate. The SATA 2 which is 3 Gbps -> 3072 Mbps -> ~375 MBps, is basically the buffer to computer rate. But the disk to buffer can achieve max of 1030Mbps -> ~130MBps speeds. Other links specified 70 MBps as max. So basically it dosent make a difference between SATA 2 or SATA 3 as it is limited by the disk to buffer speeds.
I guess this is what you meant by,
A drive can be SATA 2 and not reach it's full speed.
So my questions..
1. Would it make a difference from 7200 RPM to 10000 RPM? Dooes the RPM speeds directly translate to the disk to buffer speeds...does Faster RPM mean faster from disk to buffer?
2. If yes, what rates can 10000 RPM achieve.
3. Is this where the solid state drive have the advantage in terms of speeds? The 'storage' to buffer rates?
4. If yes, what rates do they achieve?
Anyways my buying a PC will be delayed by about 4-5 months i guess. Hopefully i shall see a price drop in SSD's by then