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How do I know when to increase Voltage?

post #1 of 10
Thread Starter 
I'm overclocking an HD 7850, obviously I'm new to overclocking. So how do I know when to increase the voltage when overclocking a HD 7850, I'm using ASUS GPU Tweak. And I have no idea when I need to increase voltage when overclocking past a certain point. I know it might seem like a stupid question to some but I'm a newb obviously. Thanks!
post #2 of 10
Quote:
Originally Posted by Gnuoyleahcim View Post

I'm overclocking an HD 7850, obviously I'm new to overclocking. So how do I know when to increase the voltage when overclocking a HD 7850, I'm using ASUS GPU Tweak. And I have no idea when I need to increase voltage when overclocking past a certain point. I know it might seem like a stupid question to some but I'm a newb obviously. Thanks!

When you lose stability on stock volts?
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post #3 of 10
When you lose stability, Blue screens, Shut-downs etc...Errors...
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post #4 of 10
Thread Starter 
Quote:
Originally Posted by SimplyTheBest View Post

When you lose stability, Blue screens, Shut-downs etc...Errors...

Thanks! That was the answer I was looking for, just didn't know how to tell when it was unstable. Thanks for the description. smile.gif
post #5 of 10
Quote:
Originally Posted by Gnuoyleahcim View Post

Thanks! That was the answer I was looking for, just didn't know how to tell when it was unstable. Thanks for the description. smile.gif

Use FurMark for stress testing, to make sure that your card is stable.

http://www.ozone3d.net/benchmarks/fur/
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post #6 of 10
when you encounter artifacts in games and benchmarks or crashes thats when you can confirm that the overclock is not stable. the HD 7850 can run at 1.05 Ghz at stock volts. to hit 1.2 Ghz you might have to increase voltage slightly. try 0.05v increments. if stock voltage is 1.2v then push it up to 1.25v.

for stability testing avoid furmark . run Heaven 3.0, 3D Mark 11, BF3, Crysis games.
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post #7 of 10
Quote:
Originally Posted by raghu78 View Post

when you encounter artifacts in games and benchmarks or crashes thats when you can confirm that the overclock is not stable. the HD 7850 can run at 1.05 Ghz at stock volts. to hit 1.2 Ghz you might have to increase voltage slightly. try 0.05v increments. if stock voltage is 1.2v then push it up to 1.25v.
for stability testing avoid furmark . run Heaven 3.0, 3D Mark 11, BF3, Crysis games.

Why?
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post #8 of 10
Quote:
Originally Posted by theamdman View Post

Why?

furnark is just an unrealistic workload and maxes out chip and board power consumption. its more for testing the cooler capability under the worst cases.
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post #9 of 10
People, Laugh at me but, AMD Overdrive that comes with CCC is the best way to Overclock it, right?...
post #10 of 10
Quote:
Originally Posted by Dargonplay View Post

People, Laugh at me but, AMD Overdrive that comes with CCC is the best way to Overclock it, right?...

That's what I use, really. There are other options, but Overdrive works ok for me if you are not increasing voltage. if you are Sapphire TRiXX
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