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6850 overlocking

welshdragon

welshdragon

welshdragon

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My shiney new Asus 6850 is installed and waiting the oc treatment.

Any other 6850 oweners out there and what is your current oc including voltages?

Also, what programme are people using? The Afterburner Beta or Sapphire's Trixx programme? Or indeed something else?
 
spirits247 said:
Did you give it a go welshdragon. :)

I found what was causing the idling clock spikes, but probably wait forever for a fix so I'll switch to Firefox in Win7, "protected mode" be damned. Just want the 2D voltage from Trixx now when overclocked and I'll be well happy.

At the moment, I'm using default clocks for normal usage and power saving, then if I run a demanding game that needs it, fire up Trixx and overclock for that 25% boost! Hopefully I'll be able to edit the bios at a later date once we have support in RBE (Radeon Bios Editor) and make 1000 1150 permanent with the 2D clocks and voltages working fully. I'd do it in a Hex editor if I could find the right address to edit.

Well happy with this card - perfect performance for the casual gamer. And no more banding using AF filtering, but texture flickering can still be an issue occasionally although that's been a long time issue for nVidia and ATI. Hopefully that will get put to bed soon too.
Click to expand...

Not yet been working, been working shifts over Christmas. Its high on my list though.

Been having a play around in the CCC though and do people generally leave the AA/AF etc on default and let the game do the work or do they set it CCC and also use ingame settings?

Just whacked mine up halfway and the improvement in starcraft 2 is fantastic. Just assumed with everything on ultra sc2 would also apply AA etc but obviously not?
 
Also, could a mod change this to Official 6850 pverclocking thread to generate more interest?

Everyone overclocking post your result in here including voltages.
 
Right just had a bash and stable at 1000 core 1150 mem on 1218 volts.

Gaming for an hour on that the temp hit 66c so I hope thats not too high??

Performance wise I benched the system using 3dmark vantage from 2008.

my 6850 at stock gave a gfx score of 13015. With the above overclock this improved to 15267.

However this is an old 3dmark so shall have to download a newer one but was just to give an indication.
 
Also @spirits I've noticed the spikes too. The idle clocks appear to head south to 100/300 with the overclock applied but not sure about the voltage.
 
Quick question, enabled the 1000/1250 overclock using the catalyst control centre and is this alright? Will it change voltages automatically as it does not have voltage control tab?

I assume this is all ATI will safely let me do, possibly on stock voltages and the afterburner allows more volts to go beyond these limits?
 
I'm using the afterburner beta where you can access voltage.

Mine was stable at 1000/1250 on 1218 volts through afterburner

Tried 1000/1250 in the ccc but it didn't like it, needs some extra juice but not much.

However, I have mine ste at 925/1150 in the ccc with no additional voltage increase and so far no problems
 
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RaV said:
^ thats a very nice clock. :)
I cant really get above 975 on the core even with 1225 volts, and memory seems to be around 150ish max.

Mainly game at 974/1076 at 1200volts - should be able to lower this a bit, but im happy with temps atmo
Click to expand...

What temps are you getting?

Mine is idling at approx 30c but with the overclock and after several hours gaming this seems to hit 62c. Not seen it go higher yet. Fan stays really low too. Can't fault the Asus cucore hsf.
 
Hey Rav

What results you getting at the moment? Wonder if theres much in it (Performance wise) between my current 950/1150 and going for higher clock and more voltage??
 
spirits247 said:
That's well low - anything below 85C is fine.



How did you do that? Mine only allows 850/1250 overclock in Catalyst overdrive tab? I had to use Sapphire's Trixx or Afterburner to go higher.

And no, Catalyst overdrive won't touch the voltage setting (but you probably know this by now!) :D
Click to expand...

Well I am not actually sure. I had afterburner open and overclocked it with the voltage bump and all was fine. Opened ccc whilst afterburner was also open and noticed the max limits had increased. But as I found out you need the voltage increase to keep it stable which the ccc doesn't have the option to increase.

Here's a screen shot, all running at stock at the moment but you can see I can move the sldiers to 1000/1250:



I have had it to 1000/1250 but it needed a slightly higher bump in voltage. Temps did not increase much either (can't remember figures) but the highest I've seen on the card is 67c after several hours gaming.
 
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Well I haven't run any stability tests but seemed stable enough ie no artifacting/crashes etc

But tbh it annihilates everything I have at stock so for now back on stock

But looking around at official reviews 950/1150 would appear the sweet point as RaV indicates above
 
Yes I agree. I think what happened with my ccc is that whilst it was overclocked via afterburner it altered itself to display the values and left those as overclockable.

Running an ANtec truepower so my psu seems to have no issues
 
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