ZDNet Mac Pro and Xserve overclocking tool

This is not what it appears, other apps such as VMWARE FUSION will not run correctly. Apps such as this, that need access to the system timer themselves will run for a few minutes then blow up (just appear to stop working).
Be very careful as this app has not been (fully) tested by anybody who knows what they are doing.

Well, it worked for me, and pretty stable too (Mac Pro 2x2.66Mb, 6Mb RAM) - but the fact that it made my clock run fast makes it a non-starter for me, as it imprints creation dates on any files with the incorrect time, making version control a real problem - I use creation dates to check for most recent versions when sending proofs and comps to clients, for example. Too bad, the speed increase was definitely noticeable.

i cannot get this to work either. as others have noted, it freezes my MP, then when i reboot the fan goes nuts and all settings are back to normal.

i'd love to overclock... oh well.

I was able to over-clock successfully, performance gains were mild, probably not worth using this tool for.

What it does is actually increase the system bus speed by overwriting the clock chip's frequency. Since the OS takes it's system time using the system clock chip as an oscillator (why?) it will actually speed up time for the computer your CLOCK will run faster... which makes this terribly inconvenient.

Unfortunately, intel has hard-wired the speed of the processor into the silicon, and traditional overclocking of modern processors isn't very possible.

Any instability as a result of this tool is likely due to ram issues. On a system with only apple shipped ram it worked great, up until the 3146 threshold (on a 2.8 8-core) that the developer suggests (after that point instability is unavoidable)

With third party ram installed, instant cluster-f

Remember to delete this tool and clear the var/logs/system.log file before toting your pro into the genius bar after you break it.

I don't think it'ss screw up as I did get it to around a 16% increase, and tried to go one more notch and then locked up, restarted and set back to that 16% mark again and it froze again. SO, I think the app is :

A. either unstable, or B. M Mac doesn't want to over clock, either way, I'm not going there with this any longer until I know. I'm luck as one stated above to even have a Mac Pro 8-core and certainly am not going to continue to try this in fear of doing permanent damage to cpu, ram, or motherboard etc. you never know, it could happen, I've fried a few on the pc side of things so I'm done.

Faslane

Just to clarify overclocking to some; typically people say you MAY damage your hardware to cover their asses if you do. In my experience (PC gamer) the worst overclocking has done was lock up my machine, and the only thing I needed to do was reset my BIOS. Modern computers have systems in place to make sure you can't physically harm your system by overclocking, and I think you'd find it somewhat difficult to do so.

I am lucky enough to have a 3.2 8 core Mac Pro, but not crazy enough to use this.

Is this SAFE ????

My Mac works fine and I dont want to screw it up!

But, If it will help in running my Mac faster without screwing up, then I can try....

I over clocked my Mac Pro 8-core by 10% as suggested, and my fan went nuts!!! then machine rebooted and the fan remained on like a jet engine, so I launched the Appa again and took it back down to normal settings, rebooted and everything fine, but not overclocked. Can anyone report successful overcloking without the fan screaming etc.? I'm kinda scared and might just leave it alone. I have a 8-core Intel Core 2 Dup 2.8 with 6GB Apple Memory. 800FSB

Thanks,
Lane

Would love to overclok it at least 1/2 way maybe, but a bit skeptical and scared I'll fry something.

Be nice if we can use it on other Mac's like some of the notebooks. I would love to overclock my MBA just a tad.