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Old 19-01-2009, 01:48 AM   #9
Slovnaft
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Well yeah, but the inductors of 9800gx2 for example were hard to deal with; they absolutely sucked heat.

Sorry I forgot to mention voltage; OVP is even harder to deal with in 03, nature keeps tripping it. I found my 'magic' area to get my highest clocks of 762/1250 tweaked idle to 1.238v which would load at around 1.25v. Higher volts would either trip ovp or for some reason give rainbow errors and freeze up.
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Old 31-01-2009, 06:28 AM   #10
cowie
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hi slovnaft just was wondering if the soft mods when done on this card is beating any ovp problem?
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Old 31-01-2009, 10:16 PM   #11
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It's not OVP when it gets triggered under load, its OCP (over current protection). I'm surprised no one with a card has figured it out yet, unless the controller chip data sheet is still under NDA.

Depending on the way the controller chip works, OCP is usually nominal + xxx mv, set by an R/C circuit(s). If you can raise nominal voltage by software cmd line mod, it you should be able to get away with a higher voltage than you are now without triggering OCP, for ex if you set 1.30v OCP point would be 1.30v + xxx mv. It may not work like this though but it would be a good idea to try it out.
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Old 31-01-2009, 11:01 PM   #12
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yes i fully understand but at volts that get close to or pass ocp, cooling wuold be a limiting factor.\
since i have only stock cooler,thuo even 1.30 and ln2 or dri ice should be 850-900 on the core
i think theres more then one circuit you would have to poll then read and write but thats no garrenty that ocp can be over come because it may be software protected and hardwire protected
i'll have a look today if i get stuck i'll try alex for help
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Old 01-02-2009, 06:48 AM   #13
cowie
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man your gtting good shaders
1.17 after 4 runs of the 3d parts in vantage

Last edited by cowie; 02-02-2009 at 03:59 AM.
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Old 03-02-2009, 05:28 AM   #14
TheKarmakazi
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By CryptiK View Post
It's not OVP when it gets triggered under load, its OCP (over current protection). I'm surprised no one with a card has figured it out yet, unless the controller chip data sheet is still under NDA.

Depending on the way the controller chip works, OCP is usually nominal + xxx mv, set by an R/C circuit(s). If you can raise nominal voltage by software cmd line mod, it you should be able to get away with a higher voltage than you are now without triggering OCP, for ex if you set 1.30v OCP point would be 1.30v + xxx mv. It may not work like this though but it would be a good idea to try it out.
Thats exactly the problem, noone has the datasheet for the VT1165 controller.
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Old 04-02-2009, 05:33 AM   #15
cowie
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so who has been putting these cards on ice so far that every one needs a ocp mod?
i just want to know how fast people are going so far on dice+1.30
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Old 04-02-2009, 06:33 AM   #16
TheKarmakazi
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so who has been putting these cards on ice so far that every one needs a ocp mod?
i just want to know how fast people are going so far on dice+1.30
Well I asked vince how much for a tek 5.0 but it was out of my price range ($230). Gonna wait for Duniek to get something compatible out.

But back to topic they should scale much better with cold since its most likely shaders that are holding back core clocks. People who have watercooled the cards get 800-830 core speeds. Hopefully there wont be any coldbug issues either.

Tonight I will be benching this beast. Temps will be about -14C outside and I use a dryer tube w/ 240CFM fan to saturate the gfx card with coldness. We'll see how far that gets me.

I havent messed around much with the card yet, but potentially maybe better gains from overclocking shaders more, and leaving core clocks a little lower?

Last edited by TheKarmakazi; 04-02-2009 at 06:40 AM.
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