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ATI Radeon 6870 overdrive settings

post #1 of 6
Thread Starter 
So I got this 6870 in my pc but I want to overclock it with AMD Overdrive. The standard GPU clock settings is 900 MHz and the standard Memory clock settings is 1050MHz. How high should I put it while not really being in a risk with breaking my GPU? Any ideas? thanks

(Max GPU clock settings: 1000MHz. Max Mem clock settings: 1250MHz)
post #2 of 6
Every GPU is different so there is no right answer on that question, just adjust it a little bit at a time and then check for artifacts and if it's ok, increase it again. Voltage is what can be very dangerous for your gpu, while running too high frequencies with low voltage will artifact/BSOD.
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First build
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 950 @ 4 GHz 1.22v ASUS Rampage III Extreme Gainward GTX 580 Corsair Dominator GT 2000 MHz CL8 6GB 
Hard DriveOptical DriveOSMonitor
Intel X25 40GB SSD + WD Caviar Black 1TB Normal DVD one! Windows 7 Ultimate (64 bit) Benq T2210HD 21,5" 
KeyboardPowerCaseMouse
Razer BlackWidow Ultimate ordered! Cooler Master Silent Pro 850W Corsair Obsidian 800d Razer Mamba 
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Razer Destructor 
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post #3 of 6
Thread Starter 
Oke but how do I check voltage and what is the max? And what do you mean by check artifacts? I am sorry I am really new to overclocking. Thanks though
post #4 of 6
artifacts.jpg

Stuff like this. You can see voltage control in MSI Afterburner but if you are very new I wouldn't reccomend doing voltage mod to your GPU, I dont know about the VRMs on that card either. Just adjust your clocks slightly up and try them. If you have no problems what so ever you can try adjusting them a little more. Remember you can fry your card if you go hard on the voltage tongue.gif
First build
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 950 @ 4 GHz 1.22v ASUS Rampage III Extreme Gainward GTX 580 Corsair Dominator GT 2000 MHz CL8 6GB 
Hard DriveOptical DriveOSMonitor
Intel X25 40GB SSD + WD Caviar Black 1TB Normal DVD one! Windows 7 Ultimate (64 bit) Benq T2210HD 21,5" 
KeyboardPowerCaseMouse
Razer BlackWidow Ultimate ordered! Cooler Master Silent Pro 850W Corsair Obsidian 800d Razer Mamba 
Mouse Pad
Razer Destructor 
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First build
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 950 @ 4 GHz 1.22v ASUS Rampage III Extreme Gainward GTX 580 Corsair Dominator GT 2000 MHz CL8 6GB 
Hard DriveOptical DriveOSMonitor
Intel X25 40GB SSD + WD Caviar Black 1TB Normal DVD one! Windows 7 Ultimate (64 bit) Benq T2210HD 21,5" 
KeyboardPowerCaseMouse
Razer BlackWidow Ultimate ordered! Cooler Master Silent Pro 850W Corsair Obsidian 800d Razer Mamba 
Mouse Pad
Razer Destructor 
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post #5 of 6
Thread Starter 
Is there any way I can see the max voltage my card can take and what my current voltage is?
post #6 of 6
It's so little!
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4670k Asrock Z87E pny 660ti samsung 
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viewsonic 27" Cooler master qfr cooler master 700 corsair 250d 
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anker vertical ocz sony 5.25" bookshelfs 
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960t M4A89GTD-proUSB3 pny 660Ti samsung wonder ram 
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1TB Samsung F3 Samsung 840 250GB LG external DVD/R 212 evo 
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Windows 7 ViewSonic ViewSonic VX2739wm model m Cooler Master Silent Pro 700 
CaseMouseMouse PadAudio
Lian Li A05FNB (flipped to A05NB) Razer Deathadder Black edt. OCZ behemoth Audio Technica ATH-AD500 
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It's so little!
(15 items)
 
   
CPUMotherboardGraphicsRAM
4670k Asrock Z87E pny 660ti samsung 
Hard DriveHard DriveCoolingOS
samsung 840 samsung  coolermaster tx3 win7 64bit 
MonitorKeyboardPowerCase
viewsonic 27" Cooler master qfr cooler master 700 corsair 250d 
MouseMouse PadAudio
anker vertical ocz sony 5.25" bookshelfs 
CPUMotherboardGraphicsRAM
960t M4A89GTD-proUSB3 pny 660Ti samsung wonder ram 
Hard DriveHard DriveOptical DriveCooling
1TB Samsung F3 Samsung 840 250GB LG external DVD/R 212 evo 
OSMonitorKeyboardPower
Windows 7 ViewSonic ViewSonic VX2739wm model m Cooler Master Silent Pro 700 
CaseMouseMouse PadAudio
Lian Li A05FNB (flipped to A05NB) Razer Deathadder Black edt. OCZ behemoth Audio Technica ATH-AD500 
AudioAudioAudio
JVC HA-RX500 Dayton Audio Bookshelfs Lepai LP2020+ 
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