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Unlock Afterburner Voltage Past 1.3v? - Page 3

post #21 of 33
You cant pass 300 watt with a 7970. Its a hardlimit. If you want something higher you need a hard mod.Or a lightning

The registry hack helps but its not real +50% tdp. Probably the problem its somewhere else and the registry hack solve it somehow.
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post #22 of 33
i updated my bios to +50 and i do see a difference no artifacting @ +50 vs +20 in older versions of trix ( or another software it was +50% ) so are you sure? can i ask for a source? ( not trying to be a neg. nancy just curious )
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post #23 of 33
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post #24 of 33
I do know the 50% pt works on my dual 6970s. I would get throttled in fur mark at 20%, did racerx for 50%, throttling disappeared.

I'll test it on the lightning's tonight. I have never experienced it with them yet but I do have hope it isn't a hard lock.

Then again, that's why having the unlocked lightning bios is nice smile.gif
     
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post #25 of 33
Quote:
Originally Posted by jomama22 View Post

I do know the 50% pt works on my dual 6970s. I would get throttled in fur mark at 20%, did racerx for 50%, throttling disappeared.

I'll test it on the lightning's tonight. I have never experienced it with them yet but I do have hope it isn't a hard lock.

Then again, that's why having the unlocked lightning bios is nice smile.gif

Yeah lightning rocks ln2 bios too good. I have 2 of them but never used them
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post #26 of 33
Quote:
Originally Posted by sugarhell View Post

There is a hardlimit on tdp. 20 %. You cant pass 300 watt with a 7970

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post #27 of 33
Quote:
Originally Posted by Pill Monster View Post


What is strange here is the fact that toxic boost is only 1200 core @ 1.25. So somehow that card is either pulling way more watts then it needs (since most cards do not throttle at 1200 core, let alone 1.25v) or they are rating from the wall with PSU efficiency not calculated.

It should be noted that the toxic indeed has 50% powertune built into its bios. So it is most definitely possible to get 7970s over 300w. Whether that must be forced through a bios change or if racerx/artmoney does it effectively through software is yet to be seen.
     
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post #28 of 33
Quote:
Originally Posted by Mega Man View Post

i updated my bios to +50 and i do see a difference no artifacting @ +50 vs +20 in older versions of trix ( or another software it was +50% ) so are you sure? can i ask for a source? ( not trying to be a neg. nancy just curious )

It should be noted that a wattage throttle does NOT create artifacts. If you hit your power limit, the card will immediately down clock to the next power table value. So either it will clock down to stock clocks or it will drop to "flash use" speed, which is 501 MHz on the 7970 I.e.
     
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post #29 of 33
With toxic you can bypass the OCP thats why you see 350 watt.The same as lightning and dc2.A normal 7970 cant pass 300 watt.
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post #30 of 33
Quote:
Originally Posted by sugarhell View Post

With toxic you can bypass the OCP thats why you see 350 watt.The same as lightning and dc2.A normal 7970 cant pass 300 watt.

You're missing the point. There isn't some resistor on reference models that caps it at 300w, it has to be a bios/registry entry limitation based in how the non-ref cards have a 2 bios, one standard with ocp/lower limits and one unlocked. If we hack the locked bios or use something like racerx on it, it works in the same way as a reference card would.

With tsm106 example, unless he was already getting throttled by the limit, then of course his testings will show no change in wattage used. Just because you raise the limit doesn't actually mean you will use it.

Its evident there is some use merely my observing GHz users boosting graphs. Now, remember when the GHz came out, amd explained a new tdp calculation they used to determine the boosting state of the card. If I had to guess, these power limit % changes are directly affecting the outcome of these calculations and allowing a more lax boosting effect.
Edited by jomama22 - 5/30/13 at 7:35am
     
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