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[Official] 7870 Tahiti LE (XT) Owners Club - Page 34

post #331 of 5223
Quote:
Originally Posted by eBombzor View Post

GPU-Z and try flashing your BIOS to .28

Both are linked in the first post

I just OC'ed to 1100mhz and it would not downclock in heaven benchmark.
I will try with my current bio first and try different bios later on. Thanks!

EDIT: Looks like i have .28 bios already.
Edited by krazyatom - 4/1/13 at 11:18pm
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post #332 of 5223
Quote:
Originally Posted by lucky88shp View Post

@MrMaxout

If you are reading this, please enlighten me/us how the heck did you reach those core/memory speeds?! I literally had to do a double take! 1425/2000!!? WOW, frickin' unreal! Can you post your 3dMark11 scores, idle/load temps please? You must have gotten the best/golden piece of the Tahiti board!

I doubt those clocks are stable at all. It's not hard to upload GPU-Z clocks without testing them for stability. I don't see any posts by MrMaxout in this thread at all. That score probably shouldn't even be listed unless it is benchmark stable.
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post #333 of 5223
I am not getting constant GPU usage frown.gif
GPU usage looks so choppy. I had many SLI/CF set up in the past and this is first time it looks like this.
Benchmark scores seems to be fine though.

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post #334 of 5223
update:

I set changed my power control settings to 8% and it did gave me little improvement, but still bit disappointed frown.gif
Even my 6970CF set up are much more constant and stable frown.gif
I just can't get stable GPU usage.

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post #335 of 5223
Quote:
Originally Posted by krazyatom View Post

update:

I set changed my power control settings to 8% and it did gave me little improvement, but still bit disappointed frown.gif
Even my 6970CF set up are much more constant and stable frown.gif
I just can't get stable GPU usage. Warning: Spoiler! (Click to show)


Following this made eveything more stable:
Quote:
Originally Posted by eBombzor View Post

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

If you want to force the second gpu to run 100% in games you have to select the without powerplay option and disable ulps in the afterburner settings.
But like I said I got about a max of 2fps out of it on Heaven maxed out 1080p so don't think it really matters, I also have the .028 bios, I think almost all the 7870 Myst.'s that were ordered recently have this bios.

I'll post comparisons of my results of with and without ulps/powerplay... Later when my kids napping haha. Pictures of %usage before and after! (Click to show)
Normal setting
photo GPUUsageFluc_zpsd51e39e4.png
Ulps and powerplay disabled
photo ulpsandpowerplaydisabled_zpsc5125655.png
These are the settings I was talking about (in the red box)
photo khbgj_zps3504d720.png

There's an afterburner Beta 8 if you go to settings and check for beta updates as well, haven't tried it yet myself.
Edited by MikeMike86 - 4/2/13 at 6:20am
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post #336 of 5223
Quote:
Originally Posted by lucky88shp View Post

WOW! That's pretty high! What is your CPU and RAM?

EDIT: Your resolution is lower. Mine is 1600x900(windowed) on Extreme preset

Thats about right. I got a score 1014 1600x900 @ 1200/1500 full tess
post #337 of 5223
Quote:
Originally Posted by MikeMike86 View Post

[/SPOILER]

Following this made eveything more stable:
If you want to force the second gpu to run 100% in games you have to select the without powerplay option and disable ulps in the afterburner settings.
But like I said I got about a max of 2fps out of it on Heaven maxed out 1080p so don't think it really matters, I also have the .028 bios, I think almost all the 7870 Myst.'s that were ordered recently have this bios.

I'll post comparisons of my results of with and without ulps/powerplay... Later when my kids napping haha. Pictures of %usage before and after! (Click to show)
Normal setting
photo GPUUsageFluc_zpsd51e39e4.png
Ulps and powerplay disabled
photo ulpsandpowerplaydisabled_zpsc5125655.png
These are the settings I was talking about (in the red box)
photo khbgj_zps3504d720.png

There's an afterburner Beta 8 if you go to settings and check for beta updates as well, haven't tried it yet myself.

After reading your post, I just had to do another Powerplay comparison in Heaven. Without Powerplay, Score was 1502 and 52 fps @1210/1620. With Powerplay enabled, Score was 1820 and 72 fps. GPUZ shows choppy clock like yours with Powerplay enabled, but the results are amazing. (These scores are NOT with Extreme setting but are my own internal standards - not for benchmarking with other members.)

For those of you who don't know, the most recent TechpowerUp version of GPUZ shows VRM 1 and 2 sensors. I am at 52 ambient and 73 full load @ 1210/1620.
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post #338 of 5223


3770k 4.8GHZ
stock 1600mhz samsung 8gb
PowerColor Myst Crossfire
1220/1500 20% Power


http://www.3dmark.com/3dm/473414

This score is with the above mentioned mods using MSI Afterburner Beta. Disabled ULPS and without PowerPlay. Also i set than fan to 100% to test temps and sound. Together they were quite loud. Max temps of 60c at 19c ambient.
Before was http://www.3dmark.com/3dm/463405 although clocks were down a bit GPU 1200/CPU 4500.

http://www.techpowerup.com/gpuz/67qmb/
Edited by josephimports - 4/2/13 at 8:37am
 
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post #339 of 5223
Hey guys.. I just bought a powercolor myst off the slickdeals for my mother's computer downstairs.

Couple of questions

1. Which Driver + Bios combination are you guys using for overclocking.. 0.28 or 0.30 or the hard to find 0.32 with... catalyst 13.x ?

2. Does disabling the powerplay via msi-afterburner mean it will "NEVER" downclock to idle power state ?? So I'd have to manually adjust when I'm just watching the videos?thumb.gif


3. I've heard the myst is voltage locked... is this true? IF NOT, what's the max voltage on these chips for 2 years operation. that's all I need 2 years.
post #340 of 5223
@mikemike86

Thanks, I'll try that when I get back home.
Quote:
Originally Posted by Bluesman View Post

After reading your post, I just had to do another Powerplay comparison in Heaven. Without Powerplay, Score was 1502 and 52 fps @1210/1620. With Powerplay enabled, Score was 1820 and 72 fps. GPUZ shows choppy clock like yours with Powerplay enabled, but the results are amazing. (These scores are NOT with Extreme setting but are my own internal standards - not for benchmarking with other members.)

For those of you who don't know, the most recent TechpowerUp version of GPUZ shows VRM 1 and 2 sensors. I am at 52 ambient and 73 full load @ 1210/1620.

If I look at my GPU-Z using crossfire, I see VRM1/2 senor from only one of my card.
So strange that choppy GPU usage still gives you good benchmark scores. It's very irritating frown.gif
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