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ATI tool and OC (x800 xt) several questions

S

SkyBum

Senior member
After 1 hour finding max memory clock in ATI tool, I'm at 558 memory core and 50c with a stock GPU core setting (watercooled).

A few questions:

- I assume I should run the card slightly below the max though. How many Mhz should I reduce the final setting from the tools max setting? (will I reduce the same amount from max when setting the core clock as well?)

- The mem clock reached as high as 568 before it slowly settled back to it's present 558. Is that reduction due to heat issues or artifacts or both?

- How long is standard to let ATI tool run for max clocks? For example if I had quit at 30min I would have been at 568 rather than the current 558. Does the tool run indefinitely or at some point will it finish it's cycle and give me a final result?

- What is the max safe temp to reach?

- How does the GPU temp avg. (50c) differ from the GPU enviornment temp avg. (45c)

- Will raising my GPU core from its stock setting change my max memory core value or are they independent of each other? (ie. after finding and setting my GPU OC, do I need to re-test the memory max?)

Sorry for so many questions but I'm rather new to the OC scene........thanks for any help.


EDIT: One more Q: ATI tool advised me that I had Temporal AA enabled and that I may need to disable for proper test results. I could not find where to disable it (omega drivers) so I ran the test as is. Can I trust my results due to this?
 
Do not trust ATI tool with the find max feature with the X800 series. Try a few number manually and watch for errors.
 
Do not trust ATI tool with the find max feature with the X800 series. Try a few number manually and watch for errors.
Click to expand...
I found ATITOOL to be very helpful and better at finding artifacts than any other method.

-You don't need to reduce MHz from my experience.

-The reduction is due to either too much heat or not enough voltage which both show up as artifacts. The artifact detector notices this and then lowers the clockspeed automatically.

-The tool runs indefinitely. I would run it for the max time that I would play a game in one sitting. Mine was about 8 hours, so I did so.

-I don't know how high X800 temps can go, but the arifact tester does a good job of detecting artifacts.

-Yes, independently from stock, the Mem or Core can be overclocked higher than if they were overclocked together. So when you OC them, you have to decide which one is more important and OC it first. I'll talk about it later.

I think you should just go to the ati website and download Catalyst drivers as they are updated more frequently and allow more customization after installed. Plus temporal AA kinda sucks in my opinion.

PROCEDURE:
----------------
Usually considered a more important thing is Bandwidth, so we will be overclocking the the memory first. Turn on the artifact detector and inrease the memory clockspeed by 5MHz until you get artifacts, then auto detect for memory from those settings. Leave it on autodetect for however long you want to test it. After you got the memory down, LEAVE it OC'd while doing the same thing to the Core.
 
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