Originally Posted by the54thvoid
That's not really accurate either. Case in hand, Crysis 3 had choppy fps - as it happened it was due to not having crossfire working. Downloaded the newer drivers (crossfire fix) and the frame rate went up by a long way and the smoothness is, well, smooth.
I know there are issues with crossfire but the latency issues are overhyped to the nth degree. I'm genuine entranced by Crysis 3 and I'm able to run it with 2x smaa at 2560x1440, getting 45-60 ish fps (albeit with 2 gpus). I am noticing NO stutter at all.
It's definitely not an endemic problem. It may occur but it is not universal. I still refute that we can see the "problems" all the time. It's game specific and even then, many people have stated they don't notice it.
Crossfire brings fps up and also in (I would say in my experience) most cases it smooths out the experience. To be fair, crossfired 7970's give 120fps+ in many titles so you wouldn't notice the lags. But again, even under 60fps, I'm not seeing it.
Maybe I've just got shit eyes.
And I'm definitely not arguing with you Dave - I know you know a shit load more about PC tech than I do and have way more experience of AMD problems but the issue is way overblown - not saying it isn't there - just way overblown.
Overall, yeah, I agree with you. I mean, I said it here earlier...there is no drama to be found here.
However, this is a real problem, and yes, it is something that is per-app, for sure. Overall, things are much better the past few months, so clearly drivers are getting better, but in all honesty, I don't expect them to be able to fix everything.
Which kinda sucks.
Overall, for me, Crossfire is rather useless. There are but three or four apps where it actually makes a tangible difference over a single card.
I've tried everything...fast drives, slow drives, high-end CPUs and low-end, every driver available under the sun, different OSes, different ram, different PSUs, different monitors...even different ways of connecting to monitors.
If you enjoy Crossfire, that's great. For me, it's really hard to recommend.
Nobody really seems to understand this problem really well, but I will say, I do seem to have a better grasp than most as to what's going on.
So, what Ryan over at PCPer is doing is taking the output given over the cable to the monitor
, and not using FRAPs, and still, on the monitor cable, framerate is noticed as incredibly unsmooth.
So, that makes me wonder...those that have no issues...do they have monitors with built-in scaling hardware? Is it active?
You are right, there's a lot of complications here in diagnosing the issue, even identifying the issue, but after having looked at this for years, literal years, I really do think this is a bigger issue than meets the eye. I also think that properly identifying the problem can go a long way to AMD making sure that newer hardware is not prone to the same issues. After it being an issue over countless generations of hardware, clearly just a driver isn't going to fix it. I hate to say it, but I actually mentioned that this might be an issue prior to the cards even being released. For me, there is no drama, because this is really old news.
With hardware out right now, I don't really expect much to change. Maybe if AMD can get this memory management stuff "fixed", it will get better. AMD agrees it's an issue
...so for you to say it's not.. well... I'm glad you are enjoying your PC.