artifcating.when cpu is overclocked.

hello everyone. im having some problems. i keep getting artifacting when i play games. this has been happening every time i overclock my cpu. i have a phenom 2 720 at 3.5. my video card isnt overclocked its set at stock. its not over heating. does anyone have any advice as to how the cpu causes these things to happen. this happens in 3d06 but not fur mark and my over clock is prime 95 stable i did prime 95 12 hours. im not sure if it matters but when i unlock the fourth core my third cores dies but the 0,1,3 keep going 2 dies.

If you have a triple core CPU, it's possible that the locked 4th core was locked due to instability. I was thinking about this yesterday, and how the manufacturers are recouping some of the losses of faulty chips by locking out cores and reselling them as lower versions, or locking their speeds down to stable numbers.

My first guess is that something's actually wrong with that core (I'm guessing it was the 'third' core that was locked, not the 'fourth'). The 3-core CPUs were originally made because they were 4-core's that had a bad core...I'm guessing that's what you have there. :( I'm not intimately familiar with any of the benchmarking software, but I'm guessing that 3DMark06 probably uses some hardware function of the CPU that FurMark doesn't.

my cpu isnt unlocked i will never unlocking because of memroy leakage and all that. i just want the aritfacts to go away.i have noticed tho when i play at 1280x 1024 in some games it artifacts and in others at lower settings its fine. but its alwasy at 1280x 1024.
i cant even overclock my video card at all without something artifacting.

I am not sure about this, but check in the bios to make sure that the pci voltages are not tied to any of the CPU voltages. It could be that you are unintentionally upping the voltage to the PCI bus and that can cause problems with the GPU.

no they dont all i do is up the multiplyer and the v core.

What are your temperatures like? Is it possible that the heat increase from the OC is causing troubles?

What about your PSU? Perhaps it cant keep up?

Ok wait.. first you said:

Quote:

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Originally Posted by blaze15301

im not sure if it matters but when i unlock the fourth core my third cores dies but the 0,1,3 keep going 2 dies.

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Then you said:

Quote:

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Originally Posted by blaze15301

my cpu isnt unlocked i will never unlocking because of memroy leakage and all that.

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How much did you up the vcore and multiplier by?

And voltages (as luke said) could tell you whether or not it's the psu.

i thogutht that maybe the third core was bad but x88x already clarified that it dosent matter. the forth core is used. im using the apogee xt with artic silver. my temps load are around 30c ish. doign nothing my temps are 21c