havene123 :
The original GPU Voltage was at 1.125 MV in MSI Afterburner, The GPU came factory overclocked to 1000 MHZ. I wanted to go for 1100 MHZ On the core clock, so I put the voltage at 1.163 MV, and I got artifacts while playing games. So I'm just wondering can overvolting cause artifacts? I mean I only bumped up the voltage .038 MV that's not that much is it? So maybe if I want 1100 MHZ on the core clock, I should raise the voltage a little bit higher? Thanks
As I said in my first reply, YES, overvolting can cause artifacts, however so can increasing the frequency.
When you increase the frequency, you need more POWER. With insufficient voltage the GPU becomes unstable so you can get artifacts or crashing. So, the solution to this is to add more voltage to stabilize the situation.
But when you increase the Voltage you also add more HEAT and if the cooler can't dissipate it fast enough your back to being unstable again.
Again, overclocking is done in two ways:
1) Frequency only
2) Frequency and Voltage
1100MHz is probably too aggressive for that card. you may get away with it in one game and not in another, or not in any games. Hard to say.
Don't forget that the MEMORY also should be overclocked proportionally to the GPU.
*The way graphics cards are designed for overclocking is CHANGING. They used to have a set frequency. Upcoming cards will be designed solely on the TEMPERATURE of the GPU and auto-overclock (an advanced version of GPU BOOST). Even some current cards can drop to a SAFETY frequency if they run too hot (because you overclocked it) which can make a game run worse.
For more info:
1) Look at NVidia's GPU BOOST, or AMD's Powertune Boost (not sure if you have powertune boost)
2) Look at overclocking CPU's (frequency, voltage, cooling)
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