My new Penryn Macbook's Harddisk has low score when testing with XBench!

[looopass]

I just got it today, and was very excited about it. And then, I used XBench 1.3 to test it. But it turns out that the performance is worse than my friend's macbook, which is a one-year old model. The difference mainly comes from the harddisk. Here is the result. I don't know why. Is it normal, or something must be wrong with my new mackbook? Please help!
BTW, it is a 2.1Ghz core 2 dual model, and I updated the memory to 4GB after I got it.

Results 35.02
System Info
Xbench Version 1.3
System Version 10.5.2 (9C2028)
Physical RAM 4096 MB
Model MacBook4,1
Drive Type Hitachi HTS542512K9SA00

Disk Test 35.02
Sequential 60.17
Uncached Write 70.95 43.56 MB/sec [4K blocks]
Uncached Write 87.71 49.63 MB/sec [256K blocks]
Uncached Read 32.58 9.53 MB/sec [4K blocks]
Uncached Read 97.20 48.85 MB/sec [256K blocks]
Random 24.70
Uncached Write 8.20 0.87 MB/sec [4K blocks]
Uncached Write 69.31 22.19 MB/sec [256K blocks]
Uncached Read 63.21 0.45 MB/sec [4K blocks]
Uncached Read 103.12 19.13 MB/sec [256K blocks]

 

[looopass]

I just got it today, and was very excited about it. And then, I used XBench 1.3 to test it. But it turns out that the performance is worse than my friend's macbook, which is a one-year old model. The difference mainly comes from the harddisk. Here is the result. I don't know why. Is it normal, or something must be wrong with my new mackbook? Please help!
BTW, it is a 2.1Ghz core 2 dual model, and I updated the memory to 4GB after I got it.

I am new here. Could anybody share some experience and give some response to my question? Thanks

 

[m1ss1ontomars]

I am new here. Could anybody share some experience and give some response to my question? Thanks

Do you realize that for most portables, the hard disk is going to be the worst scorer on any sort of benchmark? It will also be severely impacted by other running programs of any kind. Also, HD performance is largely unrelated to, say, processor performance. In the time between obtaining my MacBook and today, for the same price, the clock speed has increased by nearly 300 MHz and the architecture changed to support 64-bit instructions. However, HD performance is still the same.

If it makes you feel better, I get similar results.