Question:
Artifacts already?
While playing around with ATITools last night, I was a little confused/disappointed at how far I could tweak things before I started getting artifacts.
I'm not sure what's going on, but apparently it's the memory that's giving me problems. I ran the find max core just to see how far it could go while I was busy doing some paperwork, and it could easily be pushed over 600 with no artifacts showing. I reset to default once I had time to really play around, and started tweaking myself. I got the core to about 550, and then started bringing the memory up. I only got to about 440, however, before I started detecting artifacts. This seems really low compared to what others have been overclocking this card to (8600m gt). I lowered the core and tried tweaking just the memory and got even nastier results. After about 500 mhz, the atitool's 3D model went crazy and eventually was completely solid yellow. My screen started going nuts and eventually things started freezing. I quickly shut it down though, and haven't tried tweaking again since.
What the heck is going on?
Answer:
Re: Artifacts already?
What notebook is this?
Some 8600GTs are armed with DDR3 while yours might be DDR2 which might be the cause of the low score.
Answer:
Re: Artifacts already?
Newsflash: Overclocking is not guaranteed!
There's a reason your card was sold at the speed it was. Overclocking yields different results from card to card, even of the same model. That's just how it is. If the card could *reliably* run, say, 50% faster, don't you think Nvidia would have sold it at that speed? ;)
You might get lucky, you might not. It also depends quite a bit on sufficient cooling (and airflow), and on stable voltages from the PSU.
Answer:
Re: Artifacts already?
Yeah...like Jalf said, every card is different.
Answer:
Re: Artifacts already?
Yeah, I already knew it was DDR2, the default speed is 400 mhz.
Right now I have it at 575/435 and it's perfectly stable. I'll just keep fiddling with the core I guess since the memory doesn't seem to wanna go much higher.
In another thread I asked about controlling fan speeds, and somebody said you could do it with RivaTuner. However, there are no fan settings to be found on RivaTuner. (I'm using 158.45 drivers, btw.) I would really like to be able to change the fan settings though, but haven't been able to do so as of yet.
Answer:
Re: Artifacts already?
you went too high thats why it freezes. that happend to me once when i went too high. how long did you run the test?
Answer:
Re: Artifacts already?
Newsflash: Overclocking is not guaranteed!
There's a reason your card was sold at the speed it was. Overclocking yields different results from card to card, even of the same model. That's just how it is. If the card could *reliably* run, say, 50% faster, don't you think Nvidia would have sold it at that speed? ;)
You might get lucky, you might not. It also depends quite a bit on sufficient cooling (and airflow), and on stable voltages from the PSU.
not everyone understands this for some reason.
also, for the OP..you may have found your ceiling already..
Answer:
Re: Artifacts already?
I understand every card is different and can't all overclock the same. I was just curious, because getting artifacts after only increasing 400 - 440 seems pretty low. Oh well, just luck of the draw I guess.
I do have my core up to 600 now and still running fine though. I'm STILL trying to find a way to change my fan settings, but it looks like there aren't many options for Vista atm.
Answer:
Re: Artifacts already?
i overclocked mines from 675/1008 to 702/1095 max. any more than that will get artifacts
Answer:
Re: Artifacts already?
I got my memory up to 500 on my DDR2 8600m gt, didn't notice any problems.