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[Official] 7870 Tahiti LE (XT) Owners Club - Page 13

post #121 of 5223
Quote:
Originally Posted by Mates Rates View Post

Nice OC. Is that voltage being reported by GPU-Z and while under load? When I set my voltage to 1.3v, the vdroop under load causes my card to only reach 1.2v. What bios is your card using?
It is the voltage being reported by the new afterburner beta which supports voltage tweaks. I set it to force constant voltage because AMD's powerplay lets the card operate anywhere between 1.188v - 1.256v. Even at "default voltage" it will go up to 1.256. I am using bios .32 as thats what it cam with.
post #122 of 5223
Quote:
Originally Posted by SonDa5 View Post

Awesome.


Please share the following.


1. What is ASIC score?
2. What kind of cooling? What GPU/VRM temps?
3. What software did you use and how did you configure to unlock voltage.
4. What BIOS does your MYST have?
5. Can you please use GPU-Z to copy the BIOS from your card and upload it to OC and share it as attachment.


Your card is the fastest Tahiti 7870 I have seen yet.
1. ASIC quality is 64.3%. Seems pretty low since at 1.225 I can do 1235 core.
2. Stock pcs+ cooler from powercolor. It got up to 79C with custom fan profile on MSI afterburner. Rather loud
3. MSI afterburner's new beta (4.03 beta 7 i believe) and you simple go to settings and allow voltage reading and control. Set to constant voltage to adjust for Vdroop and Vramp
4. It has the .32 bios as that is what it shipped with.
5. Sure, it is a default 0.32 bios you can find anywhere.
Tahiti.zip 99k .zip file
Edited by 8800GT - 3/27/13 at 2:11pm
post #123 of 5223
To 8800GT...this is what I do....

1. hit "Print Scrn" on your keyboard
2. open paint
3. paste html image to paint.
4. right click on paint image...select copy
5. open microsoft word
6. paste paint image onto microsoft word
7. right click image in word and click "save as picture"..it will save it to your pictures library by default unless you've changed it

This is for Windows 7 64 bit. It sounds like a pain in the butt but it's fast once you do it a few times...p

peace..jimbo
jimbo02816
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i5 2500K Asus Sabertooth Z77 PowerColor HD 7870 LE Myst Corsair Dominator GT 
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jimbo02816
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post #124 of 5223
To imaurer269;

That's a nice score but I want to ask a favor. I see you are running 1200/1625. My PowerColor Myst overclocks very well, except for the memory. When I raise the mem over 1500, I actually lose points in 3dmark 11. I now have crossfire, but when I ran my one Myst, I overclocked the core to 1253 ( i believe, it was close to that) and left the memory at 1500. I believe my 2500k was overclocked to 4.5. My score was P9614. That is with stock voltage and 20% power limit. Could you try those settings in 3dmark 11 performance and get back to me? Also, do you have the 028 bios like I do? I love this card and that's why I bought another and crossfired them. Gotta love it...P13300, graphics score over 17000. These cards are beasts and I beat my son's overclocked Sapphire 7970 vaporX with 3770k by over 2000 points in 3dmark 11 performance.
jimbo02816
(10 items)
 
CPUMotherboardGraphicsRAM
i5 2500K Asus Sabertooth Z77 PowerColor HD 7870 LE Myst Corsair Dominator GT 
Hard DriveCoolingOSMonitor
Crucial C300 SSD CoolerMaster hyper 212+ Windows 7 Home Premium 64-bit BenQ XL 2420T 120hz 
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Antec HCP-750 WOW Gaming Mouse 
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jimbo02816
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CPUMotherboardGraphicsRAM
i5 2500K Asus Sabertooth Z77 PowerColor HD 7870 LE Myst Corsair Dominator GT 
Hard DriveCoolingOSMonitor
Crucial C300 SSD CoolerMaster hyper 212+ Windows 7 Home Premium 64-bit BenQ XL 2420T 120hz 
PowerMouse
Antec HCP-750 WOW Gaming Mouse 
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post #125 of 5223
Quote:
Originally Posted by 8800GT View Post

1. ASIC quality is 64.3%. Seems pretty low since at 1.225 I can do 1235 core.
2. Stock pcs+ cooler from powercolor. It got up to 79C with custom fan profile on MSI afterburner. Rather loud
3. MSI afterburner's new beta (4.03 beta 7 i believe) and you simple go to settings and allow voltage reading and control. Set to constant voltage to adjust for Vdroop and Vramp
4. It has the .32 bios as that is what it shipped with.
5. Sure, it is a default 0.32 bios you can find anywhere.
Tahiti.zip 99k .zip file

That .32 bios is larger in size than the other .32 bios thats been lurking around. Will try it out. I'm going to guess that the voltage being reported is the TARGET voltage? Or have ya made the tweak to make afterburner report the REAL voltage?
Edited by Mates Rates - 3/27/13 at 4:09pm
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post #126 of 5223
Thanks for the info regarding the coolers i am getting 82c whilst gaming fan is maxed out too.
post #127 of 5223
Quote:
Originally Posted by Mates Rates View Post

That .32 bios is larger in size than the other .32 bios thats been lurking around. Will try it out. I'm going to guess that the voltage being reported is the TARGET voltage? Or have ya made the tweak to make afterburner to report the REAL voltage?
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.
post #128 of 5223
Quote:
Originally Posted by azcamm28 View Post

Thanks for the info regarding the coolers i am getting 82c whilst gaming fan is maxed out too.
Stock clocks? I was getting high temps until i adjusted the fans in my chassis. I have my side panel blowing out along with my rear fan and 2 fans blowing in. from the front. After that, i rarely see it exceed 71C on stock clocks and 78 on oc'd
post #129 of 5223
Thank you all for the research you did. This thread helped me get rid of the overclock frequency stutter caused by Power Play. It sure is a strange thing to add to a card I want running full tilt all the time. rolleyes.gif



It is clocked down in the GPU-Z image but it runs fine at 1200 core and 1500 memory. I didn't bother to push it more since it seems plenty fast.
Edited by KaBAM - 3/27/13 at 6:19pm
post #130 of 5223
Quote:
Originally Posted by 8800GT View Post

It is the voltage being reported by the new afterburner beta which supports voltage tweaks. I set it to force constant voltage because AMD's powerplay lets the card operate anywhere between 1.188v - 1.256v. Even at "default voltage" it will go up to 1.256. I am using bios .32 as thats what it cam with.

Oooo... 8800gt, mind giving a GPUz screenie and uploading that bios through it?
When/where did you buy from a batch of 32's?
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