Power target is how many watts the card can draw. So lets say the 670 draws 100 watts, if you set it to 112% that means it can only draw 112 watts. To maintain that wattage it will lower the clock speed to meet its goal. As the GPU gets hotter it will take more power, thus clock speed will go lower again to maintain power draw. It will eventually get to a point (assuming load is constant) that it reaches equilibrium where the clock speed + fan speed maintains the same heat and the wattage draw will stabilize and remain at exactly 112w. ² Raising voltage has a larger effect on wattage draw than clockspeed, since we get our power draw by the equation: p = c * f * v² So we can see that raising the speed increases power draw linearly, while increasing voltage raises power draw quadratically. As such, simply maxing out your voltage at stock speeds will already lower your max speed since it must maintain its max wattage draw. You are better off finding the proper balance of your voltage to clock speed. And you would have higher headroom to play with to find what is stable with an increase to your power target. Yours is the first card I have seen to be limited at 112%, I thought all cards were 122% at stock and with a modded bios (or custom GPU design) the max power target is 150%. We wouldnt want to go above 150% anyway because the GTX 670 draws 170 watts at stock so a 50% increase in max allowable power draw means it can push 255 watts through the card. At 112% you are only maxing at 190w though. So theoretically you could set your boost clock to +500MHz and it wouldnt matter. You will much sooner hit the 190w power limit of your card probably closer to around a +150MHz boost Voltage, both the problem and solution to any computer hardware problem.
oh yeah gotcha i thought you meant it was too high so it was keeping me from being stable higher, derp not sure why this is closed so opening it back up again.
here is my score ... i havnt done anything with the GPU yet ... also i5 2500k not i7 http://www.3dmark.com/3dm11/5526278
haha dont get me goin on this again ... i dont even use my PC hahaha i just paid 15 bucks for this card total tonight man haha
honestly its not quite stable enough. might be time to play with it some more. CSGO tends to crash and then i get 50 FPS then if i alt tab a couple time it seems to recover...kinda weird
Are there any artifacts or does the game just crash and the screen go black and then turn back on with a lower FPS? To reset your card just restart precision x.
yes the screen goes black and i get lower FPS and lower Mhz, and then i can alt tab a couple times and it comes back, but the mhz stay. Ill have to give that a try, is it a problem with the overclock or the way precision X is coded? i thought my OC was just unstable, if its precision x i might be able get a lot higher. ive been ever seen artifacts actually. Update That works
All restarting precision x does is "reset" your card. It's not a problem with the software itself. It will fail with or without precision x. If you want to try and keep the core clock, drop your memory clock down. I would imagine that dropping the core clock down to the next step will be the best option unless you install one of those fancy hacked BIOS and give it more power. You'll end up with more heat being produced if you do that.