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Voltage and GPU Overclocking Question

post #1 of 2
Thread Starter 
I am rather new to GPU OC and I have something to ask, I got that bit regarding Core/Shaders to be raised slowly and proportionally and tested each time, but if I want to reach a higher clock, say 850 (out of the 783 factory overclocked), and I want to sustain it with the voltage, how much should I up the vCore? Which are the steps? 0.005v? 0.010v? 0.020v?

Also, I know every GPU performs different, but can someone give me some reference about voltage/clocks on GTX 580?

Moreover, I know that on SLI one should test each VGA separately, but since removing the lower one may be problematic, would it be enough to overclock one card at a time and leave the other on factory settings (in order to estabilish the maximum overclock for each card) or will I necessarily have to remove one card, test the other and viceversa? If I hit "Disable SLI" and OC the first card and test it, would it be the same as physically removing the other card?
Edited by Mafia2020 - 4/20/11 at 12:12pm
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CPUMotherboardGraphicsRAM
Intel Core i7 930 Rampage II Extreme NVIDIA GeForce GTX 980 Corsair  
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Corsair  Corsair  Corsair  2x120GB SSD 2x4TB Seagate Mirrored, 2x4TB Seaga... 
Optical DriveOSMonitorKeyboard
LG Blu-Ray Recorder Windows 7 Ultimate x64 Dell 30" (2560x1600) Logitech G19 
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Corsair 1200W Thermaltake Element V Logitech G9x The Barracuda 
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Intel Pentium Dual-Core G2020 @ 2.5 Ghz ASRock H77 Pro/MVP Nvidia GTX 580 2x2GB DDR-3 Ballistics 
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post #2 of 2
Thread Starter 
*bump* anyone?
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Corsair  Corsair  Corsair  2x120GB SSD 2x4TB Seagate Mirrored, 2x4TB Seaga... 
Optical DriveOSMonitorKeyboard
LG Blu-Ray Recorder Windows 7 Ultimate x64 Dell 30" (2560x1600) Logitech G19 
PowerCaseMouseMouse Pad
Corsair 1200W Thermaltake Element V Logitech G9x The Barracuda 
CPUMotherboardGraphicsRAM
Intel Pentium Dual-Core G2020 @ 2.5 Ghz ASRock H77 Pro/MVP Nvidia GTX 580 2x2GB DDR-3 Ballistics 
Hard DriveCoolingOSMonitor
1xSSD 120GB; 1xHDD 300 GB, 1xHDD 500 GB Stock Windows 7 Ultimate (x64) Monitor 22" 
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(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 930 Rampage II Extreme NVIDIA GeForce GTX 980 Corsair  
RAMRAMRAMHard Drive
Corsair  Corsair  Corsair  2x120GB SSD 2x4TB Seagate Mirrored, 2x4TB Seaga... 
Optical DriveOSMonitorKeyboard
LG Blu-Ray Recorder Windows 7 Ultimate x64 Dell 30" (2560x1600) Logitech G19 
PowerCaseMouseMouse Pad
Corsair 1200W Thermaltake Element V Logitech G9x The Barracuda 
CPUMotherboardGraphicsRAM
Intel Pentium Dual-Core G2020 @ 2.5 Ghz ASRock H77 Pro/MVP Nvidia GTX 580 2x2GB DDR-3 Ballistics 
Hard DriveCoolingOSMonitor
1xSSD 120GB; 1xHDD 300 GB, 1xHDD 500 GB Stock Windows 7 Ultimate (x64) Monitor 22" 
KeyboardPowerCaseMouse
Microsoft Keyboard EVGA 600W EB Cooler Master Logitech G500 
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