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[H] 680 vs. 7970 - Multi-Display Showdown

You need to change the render ahead command/flip que size on bf3 crossfire to get it super smooth. This is something that can be done using Radeon Pro or a user.cfg in battlefield 3. I presume this review didn't do that.

Once again they use different settings which makes it a poor review imo. They did the same with a different sleeping dogs review a few days back which i called bull on at the time.

MrMarvelous said:
Does motion blur in BF3 really drop performance by 5-8 FPS? Wow I never knew that. :eek:
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Complete bull, motion blur costs 1fps and does not affect smoothness in anyway.
 
LtMatt said:
You need to change the render ahead command/flip que size on bf3 crossfire to get it super smooth. This is something that can be done using Radeon Pro or a user.cfg in battlefield 3. I presume this review didn't do that.

Once again they use different settings which makes it a poor review imo. They did the same with a different sleeping dogs review a few days back which i called bull on at the time.



.
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they review for what you get out of the set up and what settings you can play at, so if you buy cards you know you can play those settings vs a syntetic test.
I can play at a higher resolution with the 7970 than I could using a 6870 crossfire set up. same fps but higher rez.
That I notice, but I wouldnt notice a 5fps difference at the same resolution so even if 10% faster the speed is non practical in use.
 
flopper said:
they review for what you get out of the set up and what settings you can play at, so if you buy cards you know you can play those settings vs a syntetic test.
I can play at a higher resolution with the 7970 than I could using a 6870 crossfire set up. same fps but higher rez.
That I notice, but I wouldnt notice a 5fps difference at the same resolution so even if 10% faster the speed is non practical in use.
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Yeah and thats fair enough i guess, just saying that from what ive heard from xfire users is that it reduces the micro stutter to that of single card levels.
 
LtMatt said:
Yeah and thats fair enough i guess, just saying that from what ive heard from xfire users is that it reduces the micro stutter to that of single card levels.
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if one implement a tweak in the driver or add a feature the other dont have added for some reason then it isnt apple to apple either.
when nvidia had no support for dx10.1 if I been a review site owner I would have benched the cards using dx10.1 and stated that one card has 0 fps and the other 90fps sure it aint fair but true that one card from ati was 90fps faster and playable and the other wasnt :D.

yea a non issue since you either can use radeonpro or such as render ahead.
its highly likely some sort of that tweak will be present in the 8000 series.
 
LtMatt said:
You need to change the render ahead command/flip que size on bf3 crossfire to get it super smooth. This is something that can be done using Radeon Pro or a user.cfg in battlefield 3. I presume this review didn't do that.

Once again they use different settings which makes it a poor review imo. They did the same with a different sleeping dogs review a few days back which i called bull on at the time.



Complete bull, motion blur costs 1fps and does not affect smoothness in anyway.
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They did an apples to apples comparison as well.
 
Did they use 2GB or 4GB GTX680? given the resolution they're running I'd expect 4GB but it doesn't specify (unless I missed it).
 
mmj_uk said:
Did they use 2GB or 4GB GTX680? given the resolution they're running I'd expect 4GB but it doesn't specify (unless I missed it).
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It's going to be 2GB unless stated.

4GB doesn't really make any difference at triple screen resolution unless it's 1440 * 3.

Results show this as well there's no VRAM related slow downs (drops to 0-2 FPS).
 
So, if I was to add a second 7970 and play at 1440p with vsync on would this sort out some of the erratic fps behaviour and make it smoother..? A constant 60fps is fine as far as I'm concerned and I feel limiting the fps from going crazy high will help it appear smooth..
 
Demons UK said:
So, if I was to add a second 7970 and play at 1440p with vsync on would this sort out some of the erratic fps behaviour and make it smoother..? A constant 60fps is fine as far as I'm concerned and I feel limiting the fps from going crazy high will help it appear smooth..
Click to expand...

You just need to change the render ahead setting with RadeonPro to eliminate micro stutter. Or you can use Vsync and limit your fps to 2 below the refresh rate.

If i was you, id do both. Hate tearing, micro stutter and input lag personally.
 
LtMatt said:
You just need to change the render ahead setting with RadeonPro to eliminate micro stutter. Or you can use Vsync and limit your fps to 2 below the refresh rate.

If i was you, id do both. Hate tearing, micro stutter and input lag personally.
Click to expand...

Radeonpro does a good job but I would hate input lag.
 
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