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[Official] 7870 Tahiti LE (XT) Owners Club - Page 15

post #141 of 5228
Any of you noticed that Crossfire is not fully utilized (2nd card usage was around 50%) in Heaven 4.0?
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post #142 of 5228
well after 30 or so minutes of far cry 3......i overclocked in AB to 1200/1500 +20 and worked like a charm with AA off i was seeing 62-75 fps with 2x AA on it was 47 -52 fps ...only negative is the temps rose from 62 in gaming load to 74 C max mad.gif now I know why people water cool the GPUs lol rolleyes.gif

the other thing is I seemed to get the same throttling other had going from 64% -100% load quickly but the frames dont drop dueing this drop of % ? is this just AB being silly maybe?

the second I touched the memory though even a hair off 1500 it killed my fps back down to 35 no matter what, even did it under and didn't do anything. further testing is needed obviously but 1200/1500 and a nice 20 fps + over my old 6950 in a mtter of minutes is pretty pleasing to me biggrin.gif especially with bioshock and tomb raider in the box

also i checked i believe i have the .31 bios if that means anything to people and I bought the EZ edition. Didn't know the other version was better possibly, but I'm willing to make the trade off not being so heavy smile.gif


Edited by oats2012 - 3/27/13 at 11:45pm
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post #143 of 5228
Quote:
Originally Posted by eBombzor View Post

Yea I've got the same problem. I fixed it by turning power control to 8%.

YOU ARE MY HERO!!! LOL TURNED IT DOWN TO 8+ AND VIOLA! it worked like acharm now steady at 95%+ all the time biggrin.gif and the temps in my rig dropped on the card to 68 C now I'm much more happy with this purchase thank you SIR!!! thumb.gif

if anyone has the EZ version with .31 bios try this gem of knowledge and see if it helps smile.gif im running at 1200/1500 so no comment on higher clocks but i'm pleased as is redface.gif
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post #144 of 5228
Quote:
Originally Posted by 8800GT View Post

Target voltage yes. In GPU-Z it drops to 1.24v on load unless i set it to constant voltage. then GPU-z reports it at 1.29v under load.

Interesting, the constant voltage setting seems to have no affect on my voltage. 1.3v target voltage @ 1.23v with and without force constant voltage enabled & 1.275v idle. Any other OC programs you're using apart from afterburner?


GPU-Z of the .32 bios that 8800gt uploaded for anyone interested.

a3m.png
Edited by Mates Rates - 3/28/13 at 2:42am
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post #145 of 5228
does any one here think that their card has coil whine? I've never expereinced it myself but once my fan goes up past like 40-45% i start to here this funny clicking sound.....part of me says oh no thats the fan is already bad from factory, but the pitch of the "noise" and the way its kind of non rhythmic makes me think its some type of electronic sound almost sounds like a HDD spinning up funny?

I dunno maybe I'm crazy, liking it so far, I'd hate to have to sit through RMA frown.gif ????

----positive note, BF3 on ultra at 60 fps steady biggrin.gif
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post #146 of 5228
ok.. seriously.. i have no idea how to prevent all the core clock/gpu usage stuttering. I'm on power +20 and i still get stuttering. Tried different bios and nothing. Also, i find it runs at 925 more often then any speed i set it at...
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post #147 of 5228
Guys, what's the max temp for these 7870 Tahiti LE cards? I notice once it reached 90C / 80% fan speed, the coil whine started to kick in pretty loudly.mad.gif
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post #148 of 5228
Quote:
Originally Posted by Mates Rates View Post

Interesting, the constant voltage setting seems to have no affect on my voltage. 1.3v target voltage @ 1.23v with and without force constant voltage enabled & 1.275v idle. Any other OC programs you're using apart from afterburner?

Been lurking here for awhile, I get my Myst today and will report, but I had to respond to your query about other OC utilities. I have found a much more stable utility than Afterburner - it is called Sapphire TRIXX Tweak Utility. However, I do plan to first give Afterburner another shot since Unwinder's Rivatuner was my mainstay for many years, plus it has many more features. Wizzard of TechPowerUp is the programmer for the TRIXX utility, so you know it's good.

I will be commenting later on my new card's performance when I can. I will also take the time to fill out my system specs as they will be relevant to performance, e.g. I use a Silverstone FT02-3B case which will make a real difference in cooling the card - the MOBO is mounted 90 degrees from normal case mounts.

Good luck.
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post #149 of 5228
Quote:
Originally Posted by hesho View Post

ok.. seriously.. i have no idea how to prevent all the core clock/gpu usage stuttering. I'm on power +20 and i still get stuttering. Tried different bios and nothing. Also, i find it runs at 925 more often then any speed i set it at...

The programmer of Afterburner, Unwinder, addressed this issue a while back. I believe he said that in the Setting menu you either disable Poweplay (under the unofficial overclocking section) or you disable the whole option. Forgive me I am going from memory as I am not on the machine that has Afterburner installed.

EDIT: Here is a url that explains another more efficient way to stop the flickering and flashing: http://forums.overclockers.co.uk/showpost.php?p=22535819&postcount=5

This reference comes from a thread on recommended settings for Afterburner: http://forums.overclockers.co.uk/showthread.php?t=18431335

EDIT 2: Unwinder himself addressed this here regarding the 7870 Tahiti cards: http://forums.guru3d.com/showpost.php?p=4551503&postcount=5

This stuff should probably be a sticky for the members.
Edited by Bluesman - 3/28/13 at 1:47pm
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post #150 of 5228
So, hello all.
I'm new here, but not new to overclocking.

So I have myself 2 of the Myst Powercolor Cards running in Crossfire.

I'm running at 20% voltage thing, and im at 1185/1600
Normally in Heaven 4.0 I get like 66 average FPS i think.

Well, I pushed the memory up a bit more, and now its only getting around 20fps in it.

I reset the card to default, and tried again, same result bad FPS now in Heaven...how could or what could have caused this? Seems odd to me

However, I'm getting the same FPS that I normally got in BF3 and any other games it seems.
So, what could have caused this?
Should I uninstall the drivers and re-install?
Doesn't seem to make sense.
What would cause this sudden terrible fps in Heaven 4.0?
Edited by ztkraptor - 3/28/13 at 3:12pm
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