Overclock.net › Forums › Graphics Cards › AMD/ATI › [Official] 7870 Tahiti LE (XT) Owners Club
New Posts  All Forums:Forum Nav:

[Official] 7870 Tahiti LE (XT) Owners Club - Page 436

post #4351 of 5244
Quote:
Originally Posted by marto7 View Post

Hi.I am new to forums and im dont good with english but sorry for that.So i buyed second hand VTX3D 7870 Tahiti Le black edition and i have a little problem.The VRM temperature is too High.When i start Furmark for 1-2 minutes they go to 90 degrees and i stop the program for not make problems for card.The original fan is removed and on the original radiator is 2 Fans. The first one is 80mm and the second is 120mm.They are better than the original fan but temperatures is still high.The Video card is arround 65-70 degrees for these 1-2 minutes but the VRM is going to 90 and highter.Please help me.Thanks
You need to undervolt the card with http://www.techpowerup.com/forums/threads/vbe7-vbios-editor-for-radeon-hd-7000-series-cards.189089/ and remember that furmark stresses the card further than any game ever does. For example i run my card at 1260/1690 (Core/Mem) @ 1.225V where the default voltage was 1.256V. So thats too high even for OC. If you want you can run at 1000Mhz below 1.1V (such as 1.085 or even less). This will make the card operate at very low temperatures.

One thing tho. I had to reset memory to 1500Mhz because it was stable in benchmarks but gave me black screens in game menus. So beware!
post #4352 of 5244
Which the exatly values i need to change ? Please say all of them because i dont have idea biggrin.gif
post #4353 of 5244
Quote:
Originally Posted by marto7 View Post

Which the exatly values i need to change ? Please say all of them because i dont have idea biggrin.gif
90c is ok on the vrms.. they are rated at over 100c..
furmark tho is a gpu killer.. it taxes the card way more then any game or benchmark program..

in actual game your vrms are probably in the mid 70s.. no problems with that temp.


i wouldnt change the bios if you dont know what you are doing.. great risk to the card.
 
Gaming Rig
(11 items)
 
MSI GE60 20E
(6 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8350 990fxa ud3  RX 470 4GB RX 470 4GB 
RAMCoolingKeyboardPower
Patriot Viper CM 240M G710+ thermaltake smart 850w  
CaseMouseMouse Pad
CM TROOPER G700s Corsair Gaming 
CPUGraphicsRAMHard Drive
i7 4700MQ NVIDIA Geforce GTX765M 8 GB DDR3 750 GB SATA 
Optical DriveOS
DVD SuperMulti Windows 8.1 
  hide details  
Reply
 
Gaming Rig
(11 items)
 
MSI GE60 20E
(6 items)
 
CPUMotherboardGraphicsGraphics
AMD FX 8350 990fxa ud3  RX 470 4GB RX 470 4GB 
RAMCoolingKeyboardPower
Patriot Viper CM 240M G710+ thermaltake smart 850w  
CaseMouseMouse Pad
CM TROOPER G700s Corsair Gaming 
CPUGraphicsRAMHard Drive
i7 4700MQ NVIDIA Geforce GTX765M 8 GB DDR3 750 GB SATA 
Optical DriveOS
DVD SuperMulti Windows 8.1 
  hide details  
Reply
post #4354 of 5244
Quote:
Originally Posted by marto7 View Post

Which the exatly values i need to change ? Please say all of them because i dont have idea biggrin.gif
Every card is different and there are no specific values i can suggest. I did give some rough values that should be safe to use. Besides undervolting is always safer than overclocking unless you set the voltage too low. But since you cant set 2D voltage you can always atleast boot the computer and get picture. Just 3D will not be stable with too low of a voltage. I suggest you try 1000Mhz @ 1.1V. You only need to change Profiles #6 and #0 in PowerPlay > Performance tab and then save the BIOS:



Use ATIWinflash to flash (the "Program" button): http://www.techpowerup.com/downloads/2311/ati-winflash-2-6-7/
post #4355 of 5244
@aaronsta1 maybe 90 is okay but they dont stop on 90.They go to 99 and will go highter if i dont stop the program.And this is only for a minute and 20 seconds.The go highter really fast.

@RaXelliX Thank you that i need.Now i go to flash and later i will share the results.
post #4356 of 5244
Measure the temp while gaming. Furmark tends to heat up cards way higher than any game would.
post #4357 of 5244
With the new flash and voltage at 1.1V lite RaXelliX said and not really helped.Furmark test for 1 min and 46 second give me 101C VRM and 80C gpu.Maybe i drop more the voltages ? Is there a risk ? I test after few minutes in game.

EDIT: The results are very very bad.For 3 minutes gameplay of Battlefield Bad Company 2 the temperature of GPU is 83C and VRM is 101 and i stoped the game.What the hell is happening with my card mad.gif
I dont know what to do now frown.gif
Maybe even accelero s1 plus can't help to me
Edited by marto7 - 4/18/14 at 2:56am
post #4358 of 5244
Its possible the cooling you have is simply not sufficient. Either both in the card or in the case. I read that you did remove the original fan and replaced it with 80mm and 120mm fans. Possibly there is poor airflow in the computer case?
post #4359 of 5244
The computer case airflow is good.Not the best but it is good and i never have problems with overheating like this.Now i tried to put voltage to 1050mv and has difference.I think to lower little more maybe 1000 or 1025 to see what will happen.Are possible to broke hard for ever with this ?

I have Accelero S1 rev.2 cooler and i moded it to way like sayed in this theme but i dont have original screws from the accelero and with the originals stock cooler screws is very short to use them to accelero.
post #4360 of 5244
Quote:
Originally Posted by RaXelliX View Post

...



Use ATIWinflash to flash (the "Program" button): http://www.techpowerup.com/downloads/2311/ati-winflash-2-6-7/

Remember these values are in Millivolts (mV), even though it's not labeled.

And to find your sweet spot before flashing it try using msi afterburner to change values on the fly.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › [Official] 7870 Tahiti LE (XT) Owners Club