40-50ms seems ridiculously high. That's like 20-25 FPS. For most people, I could see 33ms as being tolerable, but not ideal. I personally will experience nausea with that kind of frame time.Just as an example, we have websites claiming that spikes less than 40ms to 50ms don't matter and we have people claiming to see differences as low as 3ms. Both can't be correct.
...and yes, fps does matter. :thumbsup:
40-50ms seems ridiculously high. That's like 20-25 FPS. For most people, I could see 33ms as being tolerable, but not ideal. I personally will experience nausea with that kind of frame time.
I've heard from some sites that it takes about 8ms before you can't perceive a difference.
I believe some of the differences is a result of watching a video vs. playing a game. When playing, those hickups are more disruptive.
They are different measures. One is measuring a single spike, the other is a measure of continuous variance in the frame times. Don't conflate the two they are completely different problems and have completely different impacts on gameplay.
They are different measures. One is measuring a single spike, the other is a measure of continuous variance in the frame times. Don't conflate the two they are completely different problems and have completely different impacts on gameplay.
Are there any other 13.8 users getting crippling performance in their games, only to have it fixed by restarting their computer?
Strange anomaly I've been noticing since I installed this driver. The other day I booted up Sleeping Dogs and for some reason I was getting an absolutely dreadful framerate. Like ~15 FPS. Highly unusual, considering my 7870 typically performs excellently in Sleeping Dogs... usually a solid 60 FPS with everything on Very High (sans AA). But this had never happened before. After mulling around it, I simply rebooted my PC and fired up the game again. Ran perfectly smooth after that.
Now today, I booted up Call of Duty: Black Ops II. Right after dropping into a multiplayer match, I immediately noticed that my framerate was unusually low. About ~45 FPS. Obviously better than Sleeping Dogs, but still unacceptable for a game that essentially runs on the Quake 3 engine. So... I restarted my computer, and my framerate was magically back up to where it should be.
Anyone else having these issues? It's a beta driver, so I guess I won't complain too much. But it is a bit odd. I'm using Windows 8.
Could be a background process doing something weird. Check Task Manager next time you notice it. Could also be a power state glitch, open up afterburner/other OC'ing program and check what the clocks are at while in game.
MSI Afterburner reports my clocks correctly; 1100/1400. Also shows my GPU under 100% load. I'm not sure what the deal is.
Thanks for the tip about possible background process hog. I'll look at my task manager next time it happens.
I do not agree with this, there really is a cut off where improvements no longer matter. Ultimately it is about the human body and its brain, and have more than 50 years of research that shows that ~60 light pulses per second is the human limit for observing it as a solid light or flickering. The reason why 120 FPS feels smoother than 60 FPS is that we do have some variation in the individual frame times, so a longer delay than 16 ms will be observed under ideal conditions. This is very common occurance for a GPU at 60 FPS, but a 120 FPS (8 ms average) needs a lot more microstuttering to exceed 16 ms. This means that you can have a smoother experience even if the variance is larger if the average frame interval is much smaller...Many years ago they determined that 30 fps was an effective minimum frame rate for games. Nowadays 60 fps has most people happy but we have a lot of people seeing the difference from 60 to 120. Its far to say any such number would be just as flawed as the 30 fps number. That isn't to say I don't value such a thing, but one number is not going to be any more use than the 30fps one was. Simply put less variance is always going to be better, there isn't a cut off where it no longer matters (as far as I can tell), its going to be continuous improvement just as fps goes up.
more than 50 years of research that shows that ~60 light pulses per second is the human limit for observing it as a solid light or flickering. The reason why 120 FPS feels smoother than 60 FPS is that we do have some variation in the individual frame times, so a longer delay than 16 ms will be observed under ideal conditions.
Are there any other 13.8 users getting crippling performance in their games, only to have it fixed by restarting their computer?
I suspect one of the reason I notice the difference between 60 and 120 so readily (along with other stuttering) is that I turn off motion blur, depth of field and post processed anti aliasing. Basically anything that blurs the screen I get rid of it because I like my games to be sharp. Combine that with monitors where my primary intent was high quality images with low motion blue and I have both the kit and the type of image to see artefacts more easily than the average. I suspect if everyone bought a lightboost monitor and turned off the blur they would see a lot more of these problems than they do today.
I had the same problem a few months ago. A program called wintime (or something similar) was running on startup and causing my GPU to go to 100% usage. It was a bitcoin malware as far as I can tell.
Run task manager and go to the process tab, right click on the offending process and select the "open file location" option. THat should bring you to the folder the file resides in. You can end the process and rename the file and try a reboot so see if it fixes the problem.
http://www.bleepingcomputer.com/forums/t/492923/problem-with-bitcoin-mining-virus/
What about GPU utilisation?
I mentioned this a few posts up. Basically, MSI Afterburner reports the correct clocks (1100/1400), and it also reports 100% GPU usage. Despite this, I'm sometimes getting awful performance in games, even in low-end game like Call of Duty. The only solution is to reboot my computer and then suddenly everything runs fine again..
Which review are you referring to? I only see a news article linked.
Looks like the 7990 just got a price cut to $699. Still needs some driver work though based on the AT 13.8 review.
http://www.techpowerup.com/188552/radeon-hd-7990-malta-prices-slashed-to-699-targets-gtx-780.html
Its about time, they are joking if they think they can pull many sales giving away TWO SMALL DIES for the price of $1000. Major rip off, two 7970Ghz can be had for cheap and blow it away.
$699 is what it SHOULD have been on day 1. They dont have good out of the box CF experience, they are NOT going to be able to charge anywhere near NV's top dog.