*** Official HD6XXX Series Overclocking Thread ***

[Mydog]

Strange
That's the right one and it should work, have you flashed your cards with Asus bios? If so try again, your info looks just like mine in GPU-z and SmartDoctor works fine here.

[Pyr0]

set 0,1, or 2 still limited 950/1450 with asus 6970 bios
even with ccc or ab v2.1. BETA 7

did you set the EULA part in the config file too?

[Gaul]

Strange
That's the right one and it should work, have you flashed your cards with Asus bios? If so try again, your info looks just like mine in GPU-z and SmartDoctor works fine here.

ok, ill reflash tomorrow

did you set the EULA part in the config file too?

yup

[Mydog]

Did you reinstall drivers after flashing, stupid question maybe?

[Gaul]

agrhh crash now, i have 2 RE-install my OS
OK, im out now

[papatsonis]

crash when oc past 950? (or 840?) it may be the "EnableULPS" that need to be zeroed in registry

[Gaul]

@ all = thx.......

need vgpu 1.35 @ 1 GH ( BAD CHIP ?? )

[PatRaceTin]

^
^
^
how about 1.4V

[Mydog]

I think all 6970's are software limited to 1,35v

[Alex-Ro]

How did you enable past 1.3V in afterburner?Or you made some bios adjustments?Or how ?Could you upload that bios somewhere?Thnks.

[Mydog]

How did you enable past 1.3V in afterburner?Or you made some bios adjustments?Or how ?Could you upload that bios somewhere?Thnks.

I just downloaded Afterburner voltage unlocker

[EniGmA1987]

Im new to these cards, was using a GTX470 for a while now but just got my 6950 yesterday. Flash went great and it seems I have overclock pretty well.

What is the default core voltage for a 6950? and a 6970?
Has anyone shown yet how much these cards can tage, voltage wise, before we start seeing them die?


I think mine is at 1.175v right now and I turned up the power setting in the overdrive tab of Catalyst Control Center to +20%. That would mean the core is getting 1.4v doesnt it? Is that safe if I want to keep the car for 3 years?

[avatarhammer]

Im new to these cards, was using a GTX470 for a while now but just got my 6950 yesterday. Flash went great and it seems I have overclock pretty well.

What is the default core voltage for a 6950? and a 6970?
Has anyone shown yet how much these cards can tage, voltage wise, before we start seeing them die?


I think mine is at 1.175v right now and I turned up the power setting in the overdrive tab of Catalyst Control Center to +20%. That would mean the core is getting 1.4v doesnt it? Is that safe if I want to keep the car for 3 years?

Pretty sure 1175 is the highest in the V registers in bios of 6970 ref cards at least so assuming it is default. Also pretty sure you won't get 1.4 out of CCC unless you go Smart Doc or Afterburner with the mod to get it or edit for higher. I couldn't get Smart Doc to work, so used Afterburner (latest beta) and edit of Bios (via RBE) to the max volts I wanted and left voltage locked in afterburner. The Afterburner mod mentioned above did increased the volt headroom to 1.4 but it didn't seem stable for some reason so went back to modded bios. My chip doesn't seem to like temps much above 72C but I'd imagine if you keep temps high 70's low 80's max your card should last you the 3 years to forever.

I see a lot of folks over the 1000MHz mark. What are you considering stable? I've been trying to get Furmark stable. Standard @1920 x 1200, MSAA 8X, is fine but with extreme burning, disp. mapp. and post FX the card dies at ~30min - Temps stay under 80C with up to 1.45V so the card isn't roasting or anything (Arctic Acc cooler). Those settings are probably way extreme and unnecessary but just curious if anyone else used them or had comments (and figured I'd go for a super Noob post


EDIT: Furmark Post FX is the killer choice. Running both other options together run fine. Guess I should try all three at defaults (880/1375) and see what happens.

[EniGmA1987]

My card failed Furmark (1920x1080, extreme burn, post FX, disp map, 8x MSAA) sometime while I was at work. Core speed was 940, RAM at 1400. It was going for 45 minutes prior to when I went to work though. Highest temp was 73 degrees when I left, voltage was at stock + 20% from Overdrive tab in Catalyst.

I just dont want my card to die anytime in the next few years so I dont want to crank the voltage too much. I guess I will just leave it at 900 core and call it a day. That way I don't have to run the fan even a little bit loud either




Here is a good question, does the +20% in the power control area simply mean 20% more watts available to draw from? Or is it a voltage increase of +20%?
Yes, I realize a voltage increase of +20% would give the same wattage increase. But if this power control slider simply gives more wattage without raising voltage, that means it gives more amperage instead of voltage. So which is it?

[avatarhammer]

" Here is a good question, does the +20% in the power control area simply mean 20% more watts available to draw from? Or is it a voltage increase of +20%?
Yes, I realize a voltage increase of +20% would give the same wattage increase. But if this power control slider simply gives more wattage without raising voltage, that means it gives more amperage instead of voltage. So which is it? "


Never saw any higher than 1.175V in afterburner's monitoring screen regardless of the % change power slider position in CCC so my guess is Amps but that was my first experience with AB and it may not have been set up right so could be wrong.

[davetheshrew]

last nights run

[chucupis]

Some of my tests with a 6870
Best regards

[CARLOS*A1]

Good vga, good performance in CF

[Maxforces]

HI can anyone post picture with fan set 30% at 6970 like this

[InCredible]

Diamond 6950 flashed to 6970 1000mhz core 1500 mem 1.3v 3DMark 11 6069 3DMark Vantage 24147 stock cooler. Was able to game at these settings for a little while(1hr black ops) then got off went back and after about 15 mins it froze so now im gaming at 975/1500 still very happy with a $235 card.

[egandt]

Ok I have a new MSI 6970 and it works, but even at stock speed 880/1375 it shows like a dustbuster in any game I've tried. Even running VMWARE causes it to exceed the total noise of the system (2x120mm fans, 2x60mm fans and 8x92mm fans, 8 HDs ...). Its just crazy, I've notice the temp of the card never exceeds about 73c and is normally about 71c in games, but the sound is insane. So what can I do about the noise from this card, is this even normal?
Second the card can hit 950/1450 without issues (Heaven2 for 45 minutes, furmark (which came from MSI) for 1 hour without issues, is there a way to go faster without flashing bios, or do I need to use that nice switch and flash the card to exceed those speeds.

The first issue of noise is mostimportant as I want to be able to hear when playing games, the second is just fun to play with and see how far it can go :-)

Should mention I'm using the 11.4 Preview and I've never seen the Card temps drop below 63c (even when everything is idle (CPU temps (there are 2) are on water and is only 35c at the same time.

Thanks,
ERIC

[InCredible]

noise- use aftermarket cooler...shaman/accelero
overclocking - unlock AB to exceed 950/1450
http://forums.guru3d.com/showthread.php?t=327291

[ScottyPimpin]

Here's mine. 6870 CrossfireX (stock volts) + 9800GT Hybrid Physx.

[PC_User]

Incrementally overclocked the 6950 (unlocked shaders) to 875/1325. This is a light overclock for now and appears to be stable at stock voltage of 1.1v. Will try to push it higher in a few days.

[st0ned]

Some results with 2x 6950

3d mark 2003




3d mark 2005



3d mark 2006