I am just wondering if it is possible to safely overclock the 2.8 ghz cpu on a macbook pro to run at speeds above 3.0? Intel's website lists that the 2.8 ghz cpu has a "turbo" mode. Has anybody tried this?
Also is it possible to safely overclock the GPU? has anybody tried it?
Not that I am planning to do this! but just out of curiosity.
thank you very much.
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I've overclocked GPUs in Windows on Macs fine.. but there's no software made (and I really don't feel like doing it myself) to overclock the CPU or GPU in OSX...
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Actually i think its pretty easy to overclock both if you have the newer MBP with the Nvidia chipset. By using the Nvidia Control Panel you can up the multiplier (or i think it was the FBS, i don't recall) and GPU clocks very easily with the correct drivers. I've only up the GPU clocks to Nvidia specs, I didn't do the CPU. My temps stayed the same at load. (this was on Windows) Other people have gone further but i didn't risk it. It's a free way to squeeze out a few more FPS.
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I overclock and undervolt my GPU via the VBios, so the clocks and frequency stays the same for OS X and Windows, it gives me higher performance and lesser heat then the default settings.
For the CPU I just undervolt in OS X via coolbook, and then Undervolt and Overclock in Windows. -
I prefer using the default settings. sure it gets a little hot, but definitely not hot enough to damage the components. overclocking the gpu will certainly lead to failure sooner or later as the gpu is already hot at default settings.
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If you have the 9400m motherboard you can overclock cpu, gpu's and memory timings using Nvidia system tools.
http://www.nvidia.com/object/nvidia_system_tools_6.05.html
My Toshiba Qosmio has the 9400m g sli, and I can get my p8400 to 2.7ghz.
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Is there any way to help with the heatcycles in the GPU? I mean some software that can bring down the GPU heat progressively after some hard gaming or something alike?
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Here is a couple of screenshots taken seconds apart.
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It is called PowerMizer and it is built into all NVIDIA GPUS
Automatic Downclock when the GPU load is not intensive to save power. -
The marginal increase in performance isn't worth the potential damage that it can do to your laptop IMO.
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1)2D State rendering in OS lowest frequency
2)Transitional State
3)3D State highest frequency
When you overclock it takes effect only at state 3 so idling doesn't have any effect. -
If you feel particularly adventurous you could look into pin-modding for overclocking the CPU hardware wise. Its pretty risky and will most likely void your warranty so do it at your own risk.
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It's been a while since i've heard about pin-modding. Last time i heard people were doing it on Pentium M chips. -
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pin modding makes no sense at all when you have an Nvidia motherboard and enthusiast system architectural support from Nvidia.
http://www.nvidia.com/object/nvidia_system_tools_6.05.html -
mm, so about the heatcycles, you're saying that the driver "behavior" have already control over the heatcycles?
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Overclocking the CPU and GPU of a macbook pro!!!
Discussion in 'Apple and Mac OS X' started by dmitrip, Jul 30, 2009.