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Solve : ATI Tool Overclocking Help? |
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Answer» Hi all,
The default clock speeds seem interesting: 2D
3D Low
3D Perf.
I don't know if these are normal clock speeds, however I researched and found all mention of my card's clockspeeds to be:
I am not sure if that means that all of 2D/3D low/3D Perf. are running at that speed. So I had gone to try the "Find Max Core" to see how it clocked. First it had started from 278 MHz for all (2D/3D low/3D Perf.), then 280 MHz, (heatup phase 1), then 300 MHz, then 310 MHz, (heat up phase 2), and so on until it was at 575 MHz that the temperatures had gotten to about 60+ degrees Celcius, that I got worried and aborted the test. I was about the CHECK something else on my computer when Windows suddenly froze. So I had to reboot and research some more. And here is my question: What clockspeeds are optimal for this card? (Nvidia Geforce 7800 GTX 512) [Maybe albeit less performance than max so it doesn't run at 60+ Celcius all the time] 60c is fine. Just dont let it get above 90. Also, run 3dmark after every increase and look for artifiacts. When you see artifacts then take each one down by 10-15.525 to 550 it should be safe at that but if its freezeing that means is unstable and clock it downThanks. What would be a good setting for the memory clockspeeds?WSR - smeezekitty is wrong, please ignore him. The "optimal" or maximum clock speeds of a card are not something you can be told, you have to find them for yourself. Automatic overclocking options, such as the "find max" on ATITool are not a good idea, because what is stable in one program may not be stable in another, as you've seen. When overclocking a video card, I use ATITool's 3D view and use the check for artifacts tool. Run it for 5 minutes or so, then increase a clock speed by, say, 10MHz. Run it again for 5 minutes. If the temperature goes too high, or you see any visual artifacts, back off 5-10MHz and try again for 10 minutes. If it's OK, raise it further, rinse and REPEAT until you can't go any higher. Then try raising the other clock speed. You may have to find a balance - sometimes lowering the core from its maximum overclock means you can raise the memory a bit more, but you'll have to experiment to see what gives you the best performance. After you've found your maximum stable speeds with ATITool, it's a good idea to test again with other graphically intensive programs, such as 3DMark or an actual game. Again, any instability or graphical glitches and you'll need to clock back a bit and try again. The core speed will have more of an impact on performance than the memory speed. The core speed will raise the temperature you can measure, memory speed will raise the memory temperature but you can't usually measure that. I'd recommend clocking the core up first, then memory. The core temperature is fine up to 90C or more, so it's not often you'll have to worry about temperatures - more than likely, your card will top out on clock speeds before you get that high, unless your cooling is very bad. 3D perf is the only clock speed you should need to change. I hope this helps.i googled it and it seems to be underclocked thtas all i tried to stateQuote from: smeezekitty on August 27, 2009, 11:37:49 AM i googled it and it seems to be underclockedI apologize if that's what you meant, but it wasn't what you said.Thanks Calum, I'll try to find a stable clock by your advice.Okay, I tried the first "Scan artifacts" phase, the card seemed normal, until about 4min 20-40 seconds, that the temp of the GPU core was reported as -190 Celcius, The chip temp said 53 Celcius. I stopped the tool after it reached 5 min, and the GPU temp came back to normal, 63 Celcius. Should I continue, even from this abnormality?Sounds just like a brief sensor malfunction. If your chip overheats you'll know, there will be graphical glitches or the system will freeze. Monitoring the temps is only to see how close you are to the maximum temperature, if you reach it there shouldn't be a problem as the thermal protection should protect the card from damage. What program are you using to monitor temperatures?Oh, a sensor malfunction. It got me worried there, I thought there was almost LIQUID nitrogen touching the card. I've been using ATITool's temp reports + Speedfan (although there seems to be a 6-7 degree Celcius difference between the two). I may check RealTemp's report once I have downloaded it. I forgot to mention my CPU is an Intel Pentium D 805, so I think RealTemp will not be compatible with it.RealTemp won't work with a Pentium D, no. Either Speedfan or ATITool should be fine to measure temps, but personally I use Rivatuner. It's a little more complex to set up, but I find it's better to monitor graphics card temperatures. If you're happy with the programs you're using there's no real reason to switch though.Okay, So I've so far gotten a stable 550 Mhz Core and 1640 Mhz Memory clock @: 63 (ATITool)/67 (GPU-Z)/73 (Speedfan) Celcius. (67 Average Celcius). According to specifications for my card, this seems to be levels close to the RATED clockspeeds. I think there may be more potential left from these figures. I tested its game performance using Race Driver Grid (bought in '08!), at Medium settings, no AA, only in menu so far... GPU-Z is most likely to be correct from those figures, but whichever is right you're well within spec so no worries there. Good to hear the overclock is working out for you so far. |
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