[H] users 7970 Overclock Results thread

next-Jin said:
Shouldn't auto increase the fan speed regardless based on temp? I set mine to 100% for shits and giggles and it was insane.
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I would think so, but never really seems to go above 40% as others have mentioned.

I tried doing manual fan settings, but I still crashed before the card even hit 70f. So I'ts not heat problems, which was my only guess. Could it be I'm not increasing memory clocks along with the core clocks? I usually just put the memory straight to 1600mhz


EDIT:
o_O Looking at GPU-z...the card is running PCIe 1.1 at 16x. That could be a problem.
 
Koolance will have there water blocks out on the 16th :) About to move my system into my server rack and toss a huge rad in my rack with it lol Wife said when taxes come back I could build a new rig lol
 
Piotrsama said:
BSOD at stock clocks?
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yea, it BSOD on stock randomly for some reason, although it only happens couple times so far.... It's not even under stress when it happened..

Igg said:
Mine could but i wanted stock volts so i'll be happy with 1175/1600 with stock volts.

Mine could hit 1225/1625 with a bump to 1.9v
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Holy moly.... 1.9v? what kind of regulator you are using....?:p
 
Results
1100 Core
1575 RAM
Stock Volts

Type Card
1x Reference XFX

Overclock Tool
CCC

Stability Test
FurMark

Running 1125/1575 crashes the display drivers while running FurMark. Even then at 1100/1575 at 60% fan speed I hit a max of 91 degrees. 60% fan speed is insanely loud compared to my old 5850 at 80% fan speed.
 
update:

Results
1150 Core
1600 RAM
Stock Volts

Type Card
1x Reference Sapphire

Overclock Tool
TRIXX

Stability Test
FurMark - ran for 15 minutes, max temp 92c, eventually leveled out to 90c and was fine.

I dont think going much higher though will have sufficient cooling? thats pretty damn hot.
 
Okay, I had my card crash at 1175 and 1125...so I'm jumping back down to stock :( I wonder why my system can't handle this
 
next-Jin said:
At 1100 Core I had a crash in BF3 and Heaven, the driver crashed but the computer didn't hard lock and I never saw any artifacts. I might try to raise the voltage some but a bit hesitant till more people report.
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You might be running out of room with your PSU, I'm having the same trouble. The only giveaway is that sometimes my entire box shuts off instead of just crashing the video drivers. If there are no artifacts (and the voltage is sufficient), and its perfectly stable one notch lower, its probably because the card can't take it, my money is on power.
 
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satrafton said:
You might be running out of room with your PSU, I'm having the same trouble. The only giveaway is that sometimes my entire box shuts off instead of just crashing the video drivers. If there are no artifacts (and the voltage is sufficient), and its perfectly stable one notch lower, its probably because the card can't take it, my money is on power.
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Yes, system shutdown is almost always a power supply issue.
 
How can a AX750 not handle a single card setup?

Ill drop the cpu clocks to stock and see what happens.
 
Guys writing stock volts is not good enough if the card uses an aftermarket design. It will be much more reliable to have everyone report a standard voltage like 1.2v. When people start reporting the Sapphire liquid cooled card at 1.5 GHz stock volts the validity of the thread will fall apart.
 
XacTactX said:
Guys writing stock volts is not good enough if the card uses an aftermarket design. It will be much more reliable to have everyone report a standard voltage like 1.2v. When people start reporting the Sapphire liquid cooled card at 1.5 GHz stock volts the validity of the thread will fall apart.
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Good call. I updated the OP to reflect my voltage.
 
So using afterburner's monitor, I'm noticing that its registering a reasonable voltage drop under load. If i set the voltage to 1200mV, the actual monitored voltage is 1185mV idle, and then drops down to 1128mV under load. Similarly, set to 1300mV, I'm seeing 1279mV idle, and 1200-12100mV under load. This is regardless of if I'm running 1 or both 7970's.

Any thoughts? Can anyone else confirm what their volts are under load, if there's any significant fluctuation?

As a side note, getting to 1175/1600 with the voltage at 1.3 (~1.2 actual).

edit: just to get it out of the way, yes, have powertune set to +20
 
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Tiporaro said:
So using afterburner's monitor, I'm noticing that its registering a reasonable voltage drop under load. If i set the voltage to 1200mV, the actual monitored voltage is 1185mV idle, and then drops down to 1128mV under load. Similarly, set to 1300mV, I'm seeing 1279mV idle, and 1200-12100mV under load. This is regardless of if I'm running 1 or both 7970's.

Any thoughts? Can anyone else confirm what their volts are under load, if there's any significant fluctuation?

As a side note, getting to 1175/1600 with the voltage at 1.3 (~1.2 actual).

edit: just to get it out of the way, yes, have powertune set to +20
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Yep, seeing about 100mV drop under load. Voltage actually seems to drop as the GPU temp gets higher.

Clocks I'm at right now...

1125 core
1575 memory
1125 mV core voltage (reading right around 1025mV in Afterburner)
44% fan speed

Seeing about 80C max running Furmark.
 
Just to give a sense of how this is looking -

volts.jpg


I don't remember my 6 series bouncing around like this so much. I feel like something's wrong with power for it to be very unstable - tried swapping to bare outlet just to rule out intermediaries. Parja's does yours look like this as well?
 
2x Sapphire 7970 Reference

GPU: 1175
Memory: 1575
Voltage 1.170 (stock)

Ambient temperature is around 60c for the primary card and 42c for the secondary. The secondary gets automatically clocked down to 300/150 when it's not in use.

I may try to bump up the voltage and clocks tomorrow with TRIXX, but honestly this setup is insanely fast as it is.
 
Is there any reason why Furmark would crash over and over causing the videocard to stop sending a signal to the display yet everything else works fine? I even got furmark to complete a full 15 min test but when I went to afterburner I noticed the voltage was listed at 1050 so I hit "reset/default" and ran it again and it crashed.
 
next-Jin said:
Is there any reason why Furmark would crash over and over causing the videocard to stop sending a signal to the display yet everything else works fine? I even got furmark to complete a full 15 min test but when I went to afterburner I noticed the voltage was listed at 1050 so I hit "reset/default" and ran it again and it crashed.
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Furmark puts a pretty crazy load on the gpu, with furmark I hit 94-95deg after replacing the TIM, with BF3 I hit 72-73 max. :p some sort of unnatural load!
 
Digital Viper-X- said:
Furmark puts a pretty crazy load on the gpu, with furmark I hit 94-95deg after replacing the TIM, with BF3 I hit 72-73 max. :p some sort of unnatural load!
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So what other stability tests are there other than Furmark as your right, big time crazy load on the gpu's.
 
Vegasr said:
So what other stability tests are there other than Furmark as your right, big time crazy load on the gpu's.
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i prefer to use gaming as my stress test, it hasn't failed me yet. you'd be surprised at how different games apply load to your gpu in different ways. right now my card is BF3 stable all day long but not Crysis 2 stable. Crysis 2 may be considered a terrible game yadda yadda, but holy hell it looks good with DX11/high res texture packs. it's a great way to test out your new 7970.
 
Even at stock clocks Furmark shits out of me, its pissing me off. I uninstalled and reinstalled drivers and my temps have not gone above 82 or so.
 
Porter_ said:
i prefer to use gaming as my stress test, it hasn't failed me yet. you'd be surprised at how different games apply load to your gpu in different ways. right now my card is BF3 stable all day long but not Crysis 2 stable. Crysis 2 may be considered a terrible game yadda yadda, but holy hell it looks good with DX11/high res texture packs. it's a great way to test out your new 7970.
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Crysis 2 with MAldo's mod is the prettiest pc game I've personally ever played.
 
well I flipped my psu to were the fan is on top as opposed to on the mesh underside and the damn thing works fine now I think. I even clocked it at 1125 and am steady at 87c in furmark.

/shrug

I think the fan might have not been spinning.
 
next-Jin said:
well I flipped my psu to were the fan is on top as opposed to on the mesh underside and the damn thing works fine now I think. I even clocked it at 1125 and am steady at 87c in furmark.

/shrug

I think the fan might have not been spinning.
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Wow. Sounds like your PSU must have been overheating. Glad its working :)
 
next-Jin said:
well I flipped my psu to were the fan is on top as opposed to on the mesh underside and the damn thing works fine now I think. I even clocked it at 1125 and am steady at 87c in furmark.

/shrug

I think the fan might have not been spinning.
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I'll take credit for that one ;) Glad you got it worked out, my 1350W should be here this afternoon, can't wait to post some results.
 
satrafton said:
I'll take credit for that one ;) Glad you got it worked out, my 1350W should be here this afternoon, can't wait to post some results.
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Flyinfinni said:
Wow. Sounds like your PSU must have been overheating. Glad its working :)
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Actually that was not it, I know how to fix it I believe though. If I put powertune to -20 and run it all is good then I move it back to +20 it's fine there aswell.

It's not until I screw with afterburner or trixx at all that it starts fucking up. I don't even have to mess with voltages, if I up the clocks or whatever even lower them it'll start crashing the card and powering it off it seems like even thought he fan is still going at 20%.
 
Tiporaro said:
Just to give a sense of how this is looking -

volts.jpg


I don't remember my 6 series bouncing around like this so much. I feel like something's wrong with power for it to be very unstable - tried swapping to bare outlet just to rule out intermediaries. Parja's does yours look like this as well?
Click to expand...

Hmm, no, mine doesn't fluctuate like that. Mine's just a regular droop.
 
Tiporaro said:
Just to give a sense of how this is looking -

volts.jpg


I don't remember my 6 series bouncing around like this so much. I feel like something's wrong with power for it to be very unstable - tried swapping to bare outlet just to rule out intermediaries. Parja's does yours look like this as well?
Click to expand...

Mine is doing that, basically, it's weird.
 
So how should I got about overclocking mine? Never really OCd a GPU before. Do I start with GPU and then do memory, or do both at the same time, or what? How to do I stress test? I tried just maxing out sliders in CCC and running furmark but it crashed after a few min.
 
finally got my Sapphire 7970 installed. hopefully i have a decent one. i bumped sliders all the way up in CCC and bumped powertune to 20%...ran furmark till it topped out at 90c, let it go for another 10 min and no artifacts to be seen anywhere.....omfg i love you amd.

ill post later tonight after I get some gaming in. im going to leave the overclock maxed in CCC for now and will probably try for higher if everything goes smoothly.

my gpu voltage with 3 displays going at once is at 1.158v. with one monitor it drops to 0.805, all according to MSI afterburner.
 
Haste266 said:
finally got my Sapphire 7970 installed. hopefully i have a decent one. i bumped sliders all the way up in CCC and bumped powertune to 20%...ran furmark till it topped out at 90c, let it go for another 10 min and no artifacts to be seen anywhere.....omfg i love you amd.

ill post later tonight after I get some gaming in. im going to leave the overclock maxed in CCC for now and will probably try for higher if everything goes smoothly.

my gpu voltage with 3 displays going at once is at 1.158v. with one monitor it drops to 0.805, all according to MSI afterburner.
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Yeah not having that much luck, my monitor turns off if I try to do this :)

This is with an XFX BEDD on a 850 watt XFX PSU.
 
my afterburner screenie...not getting the weird voltage readings like some of you...

this was after a 10 min session in f1 2011.

7970_InitialOC.jpg
 
Tahiti doesn't always like more voltage! I've found out like some others that upping the voltage too much leads to crashes. As a matter of fact, I only increased the voltage .025 from 1.175 to 1.200 and that seem to be the most stable.

With just that little voltage increase I am running 1225/1600 in crossfire. Tested that last night and it looped Heaven 2.5 for two hours straight with no crashes/artifacts in eyefinity.

If I increase the voltage range from 1.225 to 1.300 I gain no extra speed capability and in fact the computer crashes. All of this with the temp's in check (below 68C).

So these chips don't necessarily respond well to more voltage. This also means that water cooling is pointless as running 1225/1600 only get's my cards to around ~65C. Remember these are crossfire frequencies which will almost always be lower than single card frequency capability.
 
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Hmm....I noticed that furmark crashed even after I returned by BEDD to its shipped settings. Is that normal?
 
Ghoststalker said:
Hmm....I noticed that furmark crashed even after I returned by BEDD to its shipped settings. Is that normal?
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It happened to me as well, all the time....... I fixed it by setting -20% in powertune then running it afterwards switching back to +20%. I swear it has something to do with afterburner or prixx because it only happens when I use them.
 
next-Jin said:
It happened to me as well, all the time....... I fixed it by setting -20% in powertune then running it afterwards switching back to +20%. I swear it has something to do with afterburner or prixx because it only happens when I use them.
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Well I was using CCC to overclock. Are you saying set to -20%, run Furmark, then do the OC and set it back to +20%? The purpose of the powertune setting is that it limits the amount of power draw the card can have...it doesn't necessarily guarantee a change. Doing that would just cause the card to turn off wouldn't it?
 
Haste266 said:
finally got my Sapphire 7970 installed. hopefully i have a decent one. i bumped sliders all the way up in CCC and bumped powertune to 20%...ran furmark till it topped out at 90c, let it go for another 10 min and no artifacts to be seen anywhere.....omfg i love you amd.
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x2. Just installed mine in sig rig, Cranked CCC just like you (1125/1575/20%) and been running furmark for 10 minutes now... fan is on auto and it's running at 55% at 90C. Cranked fan up to 100% and the people around me (arch studio) all looked surprised hah, thing is loud.

Coming from sli gtx480s watercooled with an external mora3 radiator will take some getting used to the noise but nice to have a portable system again.
 
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