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At stock or mild OC. Neither the 7970's or the 680s will give you 60fps locked in BF3/Ultra/64 Player/1440p Caspian or Gulf of Oman, just no way!
Maybe not on 64man, but I only play 32, 64man would create more of a cpu bottleneck than a gpu.
Was playing on Caspian 32 player conquest last night and it never drops below the vsync of 60, the 680's are really amazing and the scaling when you are running at 1440 res is fantastic.
In games like Arkham City and The Witcher 2, I've gone from around 45fps on a single 680 at 1440 to locked to 60fps even with 4xmsaa on with sli.

snip
What cpu you using?
I don't play 64man, do you have the same problem in 32?


Here is skyrim. Not scientific - i will leave that to Hardocp etc.
Ultra settings. 2 x 7970 at stock + 10-15% for a 680.
35-120fps. I believe at 120fps it hits the engine frame-rate limiter.
Beginning of the game, not doing much - 40fps
And the fraps result taken from the 10minute intro - 35fps averaged minimum. 71fps overall average.
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The Witcher 2 at Ultra with Ubersampling and Vsync off.
Unplayable with 2 cards, passable with 3 but I still would not play it at Ultra even with 3 cards.
2 x 7970 at stock you will see the FPS counter stuck at 15fps. Check the dips taken from the first battle.
GPU usage 90-100% on the first card, around 50%-70% on the second.
There is something massivly wrong with your setup then dude.
With a 680, everything on ultra, apart from ubersambling off, vsync on, no AA, I got around 45fps.
With 680 sli I'm locked at 60 even when I apply 4xmsaa. Never budges, even when there is a lot of combat on screen.
Make sure you are running the Enhanced edition of the game and just reset it to Ultra. Switch off Uber and Vsync.
Don't forget that Ultra switches on AA by default, so that is probably why your frame rates are flying.
Here are the settings.
I'll give it a go when I get home and post the results, but pretty sure I'm using ultra already. I did try with ubersambling on but it bought it down to about 35fps :|
Ubersampling is a joke tbh but fun for killing your rig.
According to the image quality comparisons I've seen it makes textures slightly more blurry, which seems counter-productive. I'm sure it's not that simple but I haven't seen any reason to enable when the performance hit is so dramatic, even on top end systems. It's like DOF for Metro 2033 - even with two 680s it can't manage 60fps at 2560x1600 according to the reviews I've seen.What does it do and can you tell a difference with it on?
What does it do and can you tell a difference with it on?
Make sure you are running the Enhanced edition of the game and just reset it to Ultra. Switch off Uber and Vsync.
Don't forget that Ultra switches on AA by default, so that is probably why your frame rates are flying.
I tried this last night, selected ultra, turned off uber sync, left everything else on.
Booted up the Arena, still at 60fps.... went down to maybe 55fps when it got really heavy, but was pretty much flickering around the vsync lock.
You really must have something wrong dude :/ other than that or the 680's in sli out perform 3x7970 which is obviously not true.
This could be your problem.3960k at stock for the testing.
Ok dude did a couple of small fraps benchmarks, only about 30 seconds each, but this was during the first section where it is recounting the fight on the castle, the large crossbow thing etc:
Frames, Time (ms), Min, Max, Avg
2420, 40903, 48, 63, 59.164
Frames, Time (ms), Min, Max, Avg
4802, 80434, 36, 64, 59.701
This is with ultra settings, AA on obviously, vsync on and ubersampling off, 2560x1440.