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~~The GTX 670 Overclocking Master-Guide~~ - Page 6

post #51 of 3357
Thread Starter 
Quote:
Originally Posted by MoYu View Post

after we have achieved a stable overclock, are we supposed to turn vsync back on?

If you prefer to have vsync on, then yes thumb.gif
post #52 of 3357
Quote:
Originally Posted by SeanPoe View Post

Do you have adaptive vync turned on or vsync turned on in general? Do you have the FPS target set in precision-X? Those are the only two things that i know of that will throttle GPU usage.

Nope, don't have adaptive vsync or vsync on in Nvidia Control Panel or in WoW.

Here is the graph taken from a 25 man boss fight. The red line is where the fight starts. Ignore the dip at the start of the first red line, that happened because I alt-tabbed to turn on logging.

B5voU.png
post #53 of 3357
Thread Starter 
Quote:
Originally Posted by Blizzfury View Post

Nope, don't have adaptive vsync or vsync on in Nvidia Control Panel or in WoW.
Here is the graph taken from a 25 man boss fight. The red line is where the fight starts. Ignore the dip at the start of the first red line, that happened because I alt-tabbed to turn on logging.
B5voU.png

It's interesting how it's the exact same pattern over and over. Is there a boss mechanic during that fight that reoccurs every ~45 seconds? Each increase in GPU usage might correspond to those more demanding portions of the fight. Do you know what your FPS was at? Isn't there a 300FPS cap in WoW? Were you at that cap at certain points of the fight? You also might be CPU bound right now so your GPU only needs to run at ~50% for the most part to keep up with the CPU. I say this only because WoW isn't exactly a very graphically demanding game. The spikes in GPU usage might correspond to more graphically demanding parts of the fight where the GPU isn't being bottlenecked by the CPU as much.
post #54 of 3357
Quote:
Originally Posted by SeanPoe View Post

It's interesting how it's the exact same pattern over and over. Is there a boss mechanic during that fight that reoccurs every ~45 seconds? Each increase in GPU usage might correspond to those more demanding portions of the fight. Do you know what your FPS was at? Isn't there a 300FPS cap in WoW? Were you at that cap at certain points of the fight? You also might be CPU bound right now so your GPU only needs to run at ~50% for the most part to keep up with the CPU. I say this only because WoW isn't exactly a very graphically demanding game. The spikes in GPU usage might correspond to more graphically demanding parts of the fight where the GPU isn't being bottlenecked by the CPU as much.

Ah, thank you for the explanation, that makes a lot of sense. There is a repeated boss mechanic which I expect would probably fall under really low graphics usage. Now that I look at it, that is pretty funny that the graph basically mimiced the boss fight.

My FPS for the fight was fine (50+) and I'm not sure if there is a FPS cap, but I've never reached 300 FPS in a 25 man raid anyway.

I guess my main concern is, if the video card is at 700 mhz does that mean I'm losing out on FPS because it's not running at it's max speed.
post #55 of 3357
Quote:
Originally Posted by Blizzfury View Post

... is there a way to force it to not dip that low in a 3D app regardless of GPU usage?...

Force a fixed clock speed with no boost or downclocking. Hopefully SeanPoe can do a better write-up than me and the guy over at obr:

http://www.overclock.net/t/1265110/the-gtx-670-overclocking-master-guide/20#post_17393068
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post #56 of 3357
Thread Starter 
Quote:
Originally Posted by Blizzfury View Post

Ah, thank you for the explanation, that makes a lot of sense. There is a repeated boss mechanic which I expect would probably fall under really low graphics usage. Now that I look at it, that is pretty funny that the graph basically mimiced the boss fight.
My FPS for the fight was fine (50+) and I'm not sure if there is a FPS cap, but I've never reached 300 FPS in a 25 man raid anyway.
I guess my main concern is, if the video card is at 700 mhz does that mean I'm losing out on FPS because it's not running at it's max speed.

Your card should never throttle itself like that if throttling would actually reduce your FPS (unless if you actually do have Vsync or FPS-Target turned on). Are you sure you have vsync off in-game and set to either application controlled or off (or forced-off in the game specific tab) in the NVidia settings? How do you know your fps was 50+? Did you have fraps or something running?
post #57 of 3357
Quote:
Originally Posted by SeanPoe View Post

Your card should never throttle itself like that if throttling would actually reduce your FPS (unless if you actually do have Vsync or FPS-Target turned on). Are you sure you have vsync off in-game and set to either application controlled or off (or forced-off in the game specific tab) in the NVidia settings? How do you know your fps was 50+? Did you have fraps or something running?

Yeah I'm sure I have vsync off because if I stare at a wall and zoom in to the max the fps is 200+. As for knowing FPS there is a built in display that will show your current FPS, though I can't watch it the entire time during a boss fight.

I really just think it's what you mentioned before, there isn't much graphically demanding parts on certain parts of a fight so it will just throttle down.
post #58 of 3357
Thread Starter 
Quote:
Originally Posted by Blizzfury View Post

I really just think it's what you mentioned before, there isn't much graphically demanding parts on certain parts of a fight so it will just throttle down.

That would only be the case though if your CPU was bottlenecking the GPU. You can test that theory though pretty easily. Start by going to a really populated area of the game (like orgrimar AH, stormwind AH) where there's at least 25+ players and make sure you have the game maxed out. Take note of your FPS and GPU usage. Now turn down all of the GPU related settings (AA, shadows, textures, etc.) down to their minimums. If your CPU is the problem, then your GPU usage should drop and your FPS should stay about the same.
post #59 of 3357
Unfortunately, I can't find 25+ people standing around in the same area.

But staring at about 10 people with everything on max, my fps was about ~79-81. Then setting everything to low, my FPS goes to ~135-140 staring at the same spot.
post #60 of 3357
Thread Starter 
Quote:
Originally Posted by Blizzfury View Post

Unfortunately, I can't find 25+ people standing around in the same area.
But staring at about 10 people with everything on max, my fps was about ~79-81. Then setting everything to low, my FPS goes to ~135-140 staring at the same spot.

You probably won't start to become CPU bound until there's a ton of people around (20+). You could try joining an AV (that's still 40v40 right?) and go to the big clash in the center or wait until the end when there's ~30 people killing the NPC boss and then repeat the test. Your fps will still probably go up but what you really want to look at is if the GPU usage changes too when you switch settings. If the GPU usage drops when you turn the settings down, then that would indicate a CPU bottleneck problem.
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