btw where are you seeing these USB 2.0 60+ MB/s reads? Do you have USB on an addon card?
As I said above, the only
time I have seen this kind of speed from any USB device is a 2.5" USB HDD connected to both my old nForce2 Ultra400 EPoX motherboard and a friends el-cheapo nForce2 Ultra400 motherboard.
They consistantly transferred at ~50-55MB/s using the onboard USB ports - I have not seen any
USB device since perform as fast.
It almost made me want to swap my, (then), AM2+ machine for the nForce2 U400, (I gave it to the parents)........almost
I've got a ASUS PCIe x4 USB3/SATA6 card plugged into the PC, just plugged my 2.5" USB2 HDD into it - still only managed ~31MB/s, (same drive that was giving me 50MB/s on the nForce2), another 2.5" USB HDD gave ~34MB/s.
Not a really good improvement considering the increased bandwidth of USB3, even though the HDD are USB2 I would have expected something better.
I really wish they had developed IEEE1394, (Firewire), as the standard for external storage, (50-60MB/s consistantly no matter what motherboard), and kept USB for mice, keyboards, fans, EL lights, missile launchers, etc.