GTX 570 overclocking thread - Page 173

Originally Posted by Shiromar 

Your card gets up in the 90's with your fan profile on max? Sorry mate, but I would definitely put it back to stock clocks with those temps, unless you're comfortable with that. I personally don't like my card reaching 80 even on the massive overclock I run. What model do you have? Also, just because you have errors doesn't mean you need to bump it up that high. That's quite a large jump in voltage just to solve errors, especially on a low OC.

Originally Posted by Agoriaz 

Hey Rinzler, a good stable speed on an sli setup hmm... I would probably go for something around 820-860. But this depends on how your temperatures are, I don't like my card (I only have 1) to go above 70C, and with the Phantom - correct me if I'm wrong here - you have passive cooling, right? If so, the top card would get very hot if the cards are stacked.
Of course, no one can tell you if your cards are stable at that clock, although 820-860 seems a mild / medium overclock, but I always treat every overclock different than the last one.
Hey Falcon, first of all, you should download MSI Afterburner this is the software you're going to be fiddling with. Next, you'd want something to check your stability with; I use 3DMark11 and Heaven 3.0 to see if my overclock is A ok. Finally make sure that you're using the appropriate graphics driver from Nvidia.
When you're new to overclocking you gpu I suggest that you take it somewhat slow on this.
Now lets get to the fun part!
The first setting that you'll be touching is the Core Clock slider marked with a 1 in the picture. This is linked to the Shader Clock slider, this is fine. Try increasing the Core with about 15-20mHz. Now before you run either 3DMark11 or Heaven 3.0, here is how you determine if your overclock is stable:
When the benchmark is running, you should be watching your screen rather carefully while looking for what we call "Artifacts", these are aberrations in the image. Generally there will be either screen tearing with black lines, small dots, fields of green. Basically anything that doesn't seem normal, and when you first notice them you'll know what they are.
How to get rid of those pesky artifacts you ask then?!
Here's where the 2nd mark in the picture comes into play, this applies more voltage to the card. This slider should be operated by going up one notch at a time. One notch on the slider is +6mV. When you've applied the additional voltage, run a benchmark again - if you see artifacts, you apply another +6mV on the slider.
I suggest, that when you've found a setting where your card passes a benchmark run, you note it down either on a piece of paper or in notepad. This helps give you an overview of the Core to Voltage ratio, so you can decide on what the "sweet spot" for your card is. This is just before you have to apply a large of amount of voltage to get a core clock stable, then use the setting that was stable before that.
This covers the basics and is what you'll be using for achieving your desired clock speed, temperature and performance. Since you have the Asus DCUII, cooling isn't a problem, but take care that it doesn't get too hot!

I hope this short guide was of some help, if you have any further questions - or if there are additions or something I simply missed - please let me know!

Originally Posted by ./Cy4n1d3\. 

I would have to say, that was really good. Gave me more info than what most people do when they try to explain it. Currently, I done a very modest 800 core clock overclock, nothing else (well, got my fans running a tad faster to keep it under 60 celsius at all times). Gives me a bit more bravery to go overclock on my own.
Now, to search for more info on overclocking my CPU!

Originally Posted by Agoriaz 

Hey Rinzler, a good stable speed on an sli setup hmm... I would probably go for something around 820-860. But this depends on how your temperatures are, I don't like my card (I only have 1) to go above 70C, and with the Phantom - correct me if I'm wrong here - you have passive cooling, right? If so, the top card would get very hot if the cards are stacked.
Of course, no one can tell you if your cards are stable at that clock, although 820-860 seems a mild / medium overclock, but I always treat every overclock different than the last one.
Hey Falcon, first of all, you should download MSI Afterburner this is the software you're going to be fiddling with. Next, you'd want something to check your stability with; I use 3DMark11 and Heaven 3.0 to see if my overclock is A ok. Finally make sure that you're using the appropriate graphics driver from Nvidia.
When you're new to overclocking you gpu I suggest that you take it somewhat slow on this.
Now lets get to the fun part!
The first setting that you'll be touching is the Core Clock slider marked with a 1 in the picture. This is linked to the Shader Clock slider, this is fine. Try increasing the Core with about 15-20mHz. Now before you run either 3DMark11 or Heaven 3.0, here is how you determine if your overclock is stable:
When the benchmark is running, you should be watching your screen rather carefully while looking for what we call "Artifacts", these are aberrations in the image. Generally there will be either screen tearing with black lines, small dots, fields of green. Basically anything that doesn't seem normal, and when you first notice them you'll know what they are.
How to get rid of those pesky artifacts you ask then?!
Here's where the 2nd mark in the picture comes into play, this applies more voltage to the card. This slider should be operated by going up one notch at a time. One notch on the slider is +6mV. When you've applied the additional voltage, run a benchmark again - if you see artifacts, you apply another +6mV on the slider.
I suggest, that when you've found a setting where your card passes a benchmark run, you note it down either on a piece of paper or in notepad. This helps give you an overview of the Core to Voltage ratio, so you can decide on what the "sweet spot" for your card is. This is just before you have to apply a large of amount of voltage to get a core clock stable, then use the setting that was stable before that.
This covers the basics and is what you'll be using for achieving your desired clock speed, temperature and performance. Since you have the Asus DCUII, cooling isn't a problem, but take care that it doesn't get too hot!

I hope this short guide was of some help, if you have any further questions - or if there are additions or something I simply missed - please let me know!