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Has crossfire been fixed in Skyrim for Radeon 6000 series GPUs yet? - Page 2

post #11 of 17
I just tested with Fraps in a place where I didn't get 60 fps all the time (Solitude) and I did a complete walk through of the city. Here are the results with AMD Catalyst 12.1:

No Crossfire
Min - 31
Max - 62
Avg - 50.944

With Crossfire
Min - 39
Max - 62
Avg - 53.824

So I saw a slight increase in average fps, but the big difference is Crossfiring actually heightened my min fps which could prove very helpful in actual gameplay.

If you do end up getting a performance drop, I would suspect that it's your motherboard bottle necking your GPU's if it doesn't support 16x/16x for Crossfiring and is instead using a single card from your Crossfire at 8x. While when you take the second card away, it bumps the speed up back to 16x. This is only my hypothesis though wink.gif
post #12 of 17
Quote:
Originally Posted by theloneplant View Post

I just tested with Fraps in a place where I didn't get 60 fps all the time (Solitude) and I did a complete walk through of the city. Here are the results with AMD Catalyst 12.1:
No Crossfire
Min - 31
Max - 62
Avg - 50.944
With Crossfire
Min - 39
Max - 62
Avg - 53.824
So I saw a slight increase in average fps, but the big difference is Crossfiring actually heightened my min fps which could prove very helpful in actual gameplay.
If you do end up getting a performance drop, I would suspect that it's your motherboard bottle necking your GPU's if it doesn't support 16x/16x for Crossfiring and is instead using a single card from your Crossfire at 8x. While when you take the second card away, it bumps the speed up back to 16x. This is only my hypothesis though wink.gif

Benchmarking with V-sync or a framerate cap enabled ... provides pretty inaccurate results wink.gif

I'd guess that if you turned if off via the .ini, you'd see a lot bigger improvement in average and max ...
    
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post #13 of 17
I'm aware, but I had to get to a college class and I didn't have time to screw around rolleyes.gif
post #14 of 17
I tested again with no vsync plus with 3 runs each as a buffer for human error, again in Solitude, as a walkthrough from one end of the city to the other, no background programs and max everything for video settings.

Without Crossfire:
Test 1: Min - 35, Max - 85. Avg - 57.854
Test 2: Min - 35, Max - 84, Avg - 57.067
Test 3: Min - 30, Max - 85, Avg - 56.286

With Crossfire:
Test 1: Min - 38, Max - 89, Avg - 64.687
Test 2: Min - 41, Max - 90, Avg - 66.093
Test 3: Min - 40, Max - 90, Avg - 59.383

Here, we see only 1 notably bad run, coming from the crossfire build which is a significant 5fps lower in average fps. I'm not sure what happened on that run, but I think this is overall a half descent model of how much GPU scaling there is in Skyrim. To be honest, I would like to see better scaling in the future, but at least our cards don't get any slower as you add more. thumb.gif

An extra 5fps minimum is quite good, and another extra 5 fps max, with an overall improvement of about 6 fps

Again, everything was cranked to max settings, on a 1080p monitor, and benchmarked with Fraps.
post #15 of 17
Thread Starter 
So why the hell do I get a 30% cut in FPS with crossfire enabled in Skyrim, and only in Skyrim? My game and drivers are updated. There is absolutely nothing wrong with my GPUs, they perform in every other game.

Example, in some places in towns, like solitude, I'd get about 45 average with crossfire disabled, with crossfire enabled, I'd get around 30fps, which is about a 30% cut. And the cut is consistent 30% compared to anywhere else also.

I've decided to give up Skyrim until this issue has been solved.

If there is something I'm missing here like an obvious performance mod or tweak that everyone is using and I'm not, then let me know.

Skyrim is the worst performing game I have played to date on this rig. Its absolutely horrendous. Not only does it look terrible, it runs terrible. The shadows are broken in the game, they flicker like crazy, even with some fixes to the ini file, they only flicker less frequently, so I ended up just disabling them, because the shadows are so bad in this game. I haven't stayed on top of any mod fixes that might have been released for the shadows, but as of now with no mods, and just ini fixes, the shadows are still garbage. I can do up to x2048 shadows with no change in FPS, but if I do ultra shadows, x4096 I get a 50% FPS hit, basically unplayable frame rates with ultra shadows, with or without crossfire. And 4096 doesn't look any better than 2048.

If some of those FPS listings are with ultra shadows, I'd like to know how the hell you got those FPS with ultra shadows, because that is way higher than what I get with ultra shadows, and some of you that posted FPS lists got PCs not as powerful as mine. With ultra shadows, I get FPS dropping in the middle teens in cities like Solitude and Whiterun.

Witcher 2 maxed with Uber sampling on runs better than Skyrim @ max settings for me.
Edited by chaosblade02 - 2/11/12 at 2:05pm
post #16 of 17
Quote:
Originally Posted by chaosblade02 View Post

So why the hell do I get a 30% cut in FPS with crossfire enabled in Skyrim, and only in Skyrim? My game and drivers are updated. There is absolutely nothing wrong with my GPUs, they perform in every other game.
Example, in some places in towns, like solitude, I'd get about 45 average with crossfire disabled, with crossfire enabled, I'd get around 30fps, which is about a 30% cut. And the cut is consistent 30% compared to anywhere else also.

Have you tried overclocking?
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post #17 of 17
Thread Starter 
Quote:
Originally Posted by Thryack View Post

Have you tried overclocking?

Should I even have to for this game? I already got a sandy bridge at 3.6ghz with turbo. It gets me max FPS on my monitor on any other game I've tried so far.

I tried 4.5ghz @ 1.35 volts which I hear is a pretty standard setting for that clock rate on this CPU model, and its not stable. I really don't have the time to mess around with it. I tried it just to see if mine would do it, and if it did, great, if not then I don't have the time to mess with it. I can't find a stable overclock in the 4.2-4.5 range, so I basically gave up. I could sit there and spend 5-6 hours modifying voltage a tick here and there and probably get it, but I don't have the time for that. And if one is talking running an 18-24 hour stress test every time I modify the voltage a little, I definitely don't have time for that. I'm not gonna make a thread asking about overclocking tips, when I don't have the time or the patience to do what needs to be done to get a stable overclock.

I can find a stable overclock for my 6970s @ 1000 core @ 1.185 volts which I do for games that only make use of single GPUs.
Edited by chaosblade02 - 2/11/12 at 2:19pm
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