OVERCLOCKING early Macbook Pro - XP is Possible, OSX is not ?

Is there any tool for OSX to overclock or at least stop CPU throttling for MacBook Pro early 2008?

I noticed some jitter when minimizing or maximizing applications to the Dock.

Under Windows XP, my MBP performs very well and fast! You can disable throttling in which your CPU will be running at max speed, and I can use RivaTuner to gain noticeable performance difference.

However, I'd like to stick with OSX and Apple's OSX architecture does not allow you to stop throttling the CPU. The CPU is always throttled (lowered) regardless of what type of power scheme you select! Trust me, I opened a bug with them but the said this is an OSX architecture!
<Edited by Moderator>

Thanks

Model Name: MacBook Pro
Model Identifier: MacBookPro3,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.6 GHz
Number Of Processors: 1
Total Number Of Cores: 2
Memory: 4 GB
Boot ROM Version: MBP31.0070.B07
SMC Version: 1.18f4
Sudden Motion Sensor:
State: Enabled