PowerPC Macs that use DDR1 ram cannot have their ram overclocked. That means for a computer like iMac, the process may kill the whole computer, and no easy fix. Macrumors 65816 To OC a GPU under the current OSX is not recommended.
According to their website, the tool can currently overclock Mac Pros and XServes with Intel Xeon processors. In the PC world, it isn’t too tough to get overclocking tools. Can a Mac Pro be overclocked to 3.2 GHz?.Can You overclock the CPU on a motherboard?.What does it mean to overclock a MacBook Pro?.So, I'll just need one more quad 2.8, and I'd have an octo!ĭont see where I'd gain performance anywhere doing that though. No hyperthreading for us Harpertown owners but on the bright side, the Harpertown quad core Mac Pro is a dual socket machine with one socket unpopulated. I think Bad Company 2 can use 8 cores, it's just that my Mac Pro only has four, although later this week I'm trying for a stable 3.2GHz from a 2.66GHz Xeon E5430 I have coming and if it works, I'm might stick another in the empty socket for 8 cores total. Everything I've read says 5400 series won't work in the early Mac Pro, even the 1333 bus ones but I want to make sure. The Xbench score was with drive tests but I've removed the CPU now to try in a 2006 Mac Pro so I can't easily re-run it.
Is the game only able to run 4 threads and not 8? You mention stressing all "4 cores" in Bad Company 2. Was that Xbench score with the drive tests enabled? Can you run it again without the drive tests, as it really affects the overall score. It's possible I stuffed that bit up but I can't be bothered re-doing everything when I'm pretty sure the CPU is not going to be up to long term 3.6GHz use. The silver blotches are (badly applied) conductive paint for a voltage boost which made no improvement to stability. The black square is electrical tape on the single contact that needs to be blocked to force 1600Mhz bus. I was however able to play Bad Company 2, one of the few games capable of stressing all 4 cores, at 3.6GHz for 45mins or so before it hard crashed and I was really impressed with how smooth it was, especially considering the 256MB Radeon 2600 graphics.Īlso, seems that you need to use SLANU, SLANT etc type CPUs rather than CPUs with a B in the identifier. The better CPU choice would be a 2.66GHz model which would run at a much less ambitious 3.2GHz, they're also reasonably affordable (Aus$250) right now too and I might try one of these next week.
So, the overclock is unstable when pushed, which I was expecting given how high it was.
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