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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 605

post #6041 of 38701
Quote:
Originally Posted by Kharnak View Post

On another note, how many 7950's... or rather let me ask it like this, shouldn't everyone be able to hit over 1GHz core on stock voltages?
My HIS 7950 seems retarded, it can hit 1850 memory but only touches 980 on the core on stock volts of 1.031... at 1.043 volts it hits 1ghz and slowly climbing aswell, memory I expect to probably get to 1.9? Maybe.
What's best, 1.1 GHz core / 1500 memory or 1GHz core and 1900 memory? tongue.gif
Mine HD 7950 DCII wont do 1GHz for 24/7 on stock volts, its stable for bench, but not for everyday use.
Cheers.
Green Hell
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Green Hell
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post #6042 of 38701
Quote:
Originally Posted by tanton View Post

Hey guys, can I crossfire a reference 7970 with a non reference like the lightning?


Yes, you can.

 

AMD cards can work at their own specification (core, memory clocks, voltage and SP/Shaders) in Crossfire. They don't have to downclock or sync'ed, etc. With the exception, it will default to lowest frame buffer. For example: Crossfire 7970 3GB with 6GB, the effective is 3GB.

 

Crossfiring between different card of the same series


 

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ケンジ
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post #6043 of 38701
Quote:
Originally Posted by hollowxx View Post

i have a question i have flashed the bios that was posted on this thread at the first page, and now i see the ASUS BIOS from the picture from one of the guys here have 1.4v and mi ref card sapphire 7970 can only go 1.3v but with the VDROP ****.... do around 1.25 1.27 max and i wann know if the asus bios let u get more voltage for the card?? any help around here <<<< pretty noob with flashing bios too =) ty

It will. See below.
Quote:
Originally Posted by tsm106 View Post

The card is limited to .125v over true voltage with a maximum of 1.3v. Depending on you asic, you might max out at 1.175, ouch. Also it's impossible to hit 1.3v maximum due to vdroop.

I'm getting about .200v over with this bios.
Quote:
Originally Posted by Ruined View Post

338 Asus bios that unlocks Vcore and V mem. Extends CCC to 2000/2000, I feel like it disables OCP as well but that just might be my imagination. I'm sure this bios has floated through here before, but if you missed it check it out. FOR 7970 ref only, unless your willing to try a non ref rolleyes.gif WARNING 2D CLOCKS DO NOT WORK. http://www.techpowerup.com/vgabios/113309/Asus.HD7970.3072.120104.html enjoy thumb.gif

Good find thumb.gif

This may be well-known, but I've been trying to get more voltage since I got this card on 1/10.

That asus overclock bios and gputweak will do it. Notice the actual voltage in gpuz. Before I was stuck at setting at 1.3v so I could only get about 1.23v load. Setting to 1.4 gets me all the way to 1.31v load. Before I could not get past 1190 stable and now I can set to 1318mv for a stable 1200mhz.

ASIC quality is 55.8% fwiw, so my stock vid is 1.175V(1.12v load). This bios is obviously allowing my to go past +.125 or whatever the hardware OCP limit was thought to be. It allows for ~+200mv. Anyone with a decent clocking chip(mine is really on the bad end of the spectrum) on water should get some nice results with this.

338338
Edited by PARTON - 3/10/12 at 6:49am
    
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post #6044 of 38701
Is there a BIOS I can flash on my reference Sapphire 7970 that will allow me to keep 2d clocks, ULPS etc. but give me more overclocking headroom? I want to get to 1150-1175 without having to do unofficial overclocking or losing power saving features of the ASUS bios.

Thanks
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post #6045 of 38701
Why would you bother doing that for another 25Mhz? kookoo.gif
post #6046 of 38701
Quote:
Originally Posted by PARTON View Post

It will. See below.
I'm getting about .200v over with this bios.
Good find thumb.gif
This may be well-known, but I've been trying to get more voltage since I got this card on 1/10.
That asus overclock bios and gputweak will do it. Notice the actual voltage in gpuz. Before I was stuck at setting at 1.3v so I could only get about 1.23v load. Setting to 1.4 gets me all the way to 1.31v load. Before I could not get past 1190 stable and now I can set to 1318mv for a stable 1200mhz.
ASIC quality is 55.8% fwiw, so my stock vid is 1.175V(1.12v load). This bios is obviously allowing my to go past +.125 or whatever the hardware OCP limit was thought to be. It allows for ~+200mv. Anyone with a decent clocking chip(mine is really on the bad end of the spectrum) on water should get some nice results with this.
338338

wow at 55,8% asic lol
post #6047 of 38701
Has anyone been playing with their HD7970 overclocks recently?
I settled at 1240/1700, which is my 24/7 oc. It was a little conservative so I decided to go back to overclocking today to get MAX overclock for 24/7.

I have settled at 1270 on the core and been benching all day. I had 1 crash at 1280 so took it down 10mhz.

Before now I have had the memory at stock volts. I have bumped the volts to 1625 and I am currently at 1775 on the memory. CRYSIS 2 LOVES the extra memory speeds.
Will post benches for max oc soon. However I would recommend people who think they have maxed their card to go back and check.

I have realised my previous crashes were in relation to the memory and there is more in the tank. Found this out as my 24/7 oc crashed once after about 3 weeks. I bumped the volts on the memory which I thought was stable and since I have been able to push the core further.

Really hard to nail down them max overclock on these cards, but the results are worth it. Love it!thumb.gif

Still have not broken the 10k in 3DMark 11 yet though and probably won't, but damn close.
post #6048 of 38701
Quote:
Originally Posted by omega17 View Post

Why would you bother doing that for another 25Mhz? kookoo.gif

And how was I supposed to know that it would only yield 25mhz? You're missing the point. It wasn't worth it for me, but I wanted to put it out there because someone with a nice chip on water could hit some serious clocks that they couldn't have, otherwise.

Thanks for playing.
    
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post #6049 of 38701
Quote:
Originally Posted by Newbie2009 View Post

Has anyone been playing with their HD7970 overclocks recently?
I settled at 1240/1700, which is my 24/7 oc. It was a little conservative so I decided to go back to overclocking today to get MAX overclock for 24/7.
I have settled at 1270 on the core and been benching all day. I had 1 crash at 1280 so took it down 10mhz.
Before now I have had the memory at stock volts. I have bumped the volts to 1625 and I am currently at 1775 on the memory. CRYSIS 2 LOVES the extra memory speeds.
Will post benches for max oc soon. However I would recommend people who think they have maxed their card to go back and check.
I have realised my previous crashes were in relation to the memory and there is more in the tank. Found this out as my 24/7 oc crashed once after about 3 weeks. I bumped the volts on the memory which I thought was stable and since I have been able to push the core further.
Really hard to nail down them max overclock on these cards, but the results are worth it. Love it!thumb.gif
Still have not broken the 10k in 3DMark 11 yet though and probably won't, but damn close.

10k overall or gfx?
post #6050 of 38701
Overall, just shy.
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