How are these scores for my raptor?

Did a benchmark with hd tune 2.55 today, and I got these scores.

HD Tune: WDC WD1500ADFD-00NLR Benchmark

Transfer Rate Minimum : 51.3 MB/sec
Transfer Rate Maximum : 82.7 MB/sec
Transfer Rate Average : 71.5 MB/sec
Access Time : 8.5 ms
Burst Rate : 110.1 MB/sec
CPU Usage : 52.4%


Are they good, and how can I improve them?

Btw, how do I overclock a hard drive?

Well, to give you an idea, this is my 74gb raptor with a fresh installtion. I really hope your CPU % is wrong..

In that case, cool, mine has a higher minimum. And it is wrong, I have F@H running the background.