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7950 Crossfire vs 680 SLI at 5760*1080 (Eyefinity/Surround)

Surveyor said:
Doesn't Nvidia fiddle the performance somewhat by running the side screens at half the frame rate of the centre screen, or am I misremembering that?
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Afaik, info about the feature came about during the leaks of the 6 series before it came out, whether it does actually happen or not, I've never seen conformation whether it's a feature or not as it was never talked about.

Whenever I read surround reviews, in the comment sections I read, posters would ask whether it was happening or not, but they were never answered by the reviewers.

As I'm under no illusion professional reviewers are paid in some form or another, then take it what way you will on why the question never got answered.

If someone can point me out if this has been answered, then I would appreciate a link to it, as I would finally find out.
:)
 
SkodaMart said:
@tommybhoy lots of duplication in the post above.
Where you drunk?
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No, don't drink pal, I'm shattered and had far too many windows open between doing other things and cut/pasting here there and everywhere.:D

Thanks for pointing it out as I wouldn't have noticed.

Fixed now.:)

humbug said:
@ tommybhoy, 'humbug effect' ?
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It's not aimed at you bud.

I named the effect after the sweetie.:D
 
MeMeMeMe said:
No problems of that sort here. I've used 6950 CF and 7970 CF on eyefinity.
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As GM says it looks like an X58 / X79 issue, a bloody annoying one at that

GoogalyMoogaly said:
On the ROG forums an AMD beta testers says AMD know about the issue and are working on it. supposedly a fix may be "close".
I went X79 partly for the extra PCI-e lanes. It now looks like I'd have been better of going Z77 (I think the Eyefinity & CF/TF are purely a X58/X79 issue).

I've sold one of my 670 Windforce cards and would like to sell the other. Then need to decide if I get reference cooler 670s (have my eye on a couple of EVGA 670 FTWs) or reference cooler 7970s (have my eye on a couple MSI 7970 OCs).

Only reason I'm changing at all is cuz Silverstone recommend reference coolers for TJ11.

Gotta say I'm more impressed with the Windforce cooler while using a single card than I was with SLI WindForce.
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I do hope they find something soon.

I tried wiping all drivers last night and try the 11.2s which allegedly work with tri-fire and Eyefinity but despite saying they have installed there is no CCC and GPUz still shows the 12.11 drivers I "removed"

/sigh
 
tommybhoy said:
If the MSI is on top slot, then as you know it runs hotter in CrossFire, and remember it's not venting the waste heat out the back, by dumping it in the case, even though there is good airflow, it will still create a larger heat build up the MSI's components than it would if instead of dumping the heat out the back ala the Ice-Q.
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Nah it's hotter like for like - single card in case on its own. As it gets hotter it's also unbearably noisier.

tommybhoy said:
Clee has used both, having used eyefinity first, he said it's better hands down.

Possibly as you used surround first, then this could explain individual preference?

As they are both relatively new in the the grand scheme of things, they will both get better over time imo.
Click to expand...

Nah. Neither is perfect but Eyefinity is more broken than Surround is broken. Nothing fundamental just little niggles.
 
@ Googley

Just posted in another thread and thought you would be interested mate:

Hope this helps, but ive just gone tri-fire 7970 from tri-sli 670 (on the x79) platform and the new 12.11 drivers are fantastic, ubless you are running Eyefinity.

If you are, welcome to a world of pain. Hardly anything will run in multiple screens with black screen lock up or BSOD. Single screen (single monitor res played at full screen) is hit and miss and even 2D on desktop is a tad flakey

I was so peeved last night I was almost boxing them back up. However came across THIS review which mentions

"When you enable Eyefinity across more than one display, gaming is now broken with every driver except RC11 driver dated from January" (the review was done in April) although they aint running the x79 platform on their bench rig

Loaded them up (after mush arsing on getting rid of the 12.11s !) and *touches wood* so far, so good, however these drivers do not have the 12.11 performance boost.

Im gonna hang on and see if AMD get thier act together for the next driver release ............
Click to expand...
 
~TB~ said:
@ Googley

Just posted in another thread and thought you would be interested mate:
Click to expand...

x79 plattform seems to have issues and asus have some bug on their motherboard as well.

I have also issues but I run 120hz with apple adapters not supported by amd.
but not with games or such its just when setting up eyefinity that the apple adapter is a bit wonky. Learned how they behave so a non issue for me.
 
I have no idea about this issue, but i can offer some information which may help. :)


AMD contacted me. I am touched by their mail. (They also gave free games: with Far Cry 3 )
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Hi,



My name is Simon Ng and I come to you from the Graphics Product Group (formerly known as ATI), here at AMD. I am reaching out to you because your email address was provided to me by JuanLo from the ASUS ROG forums, regarding the Eyefinity bug on the ASUS Rampage IV motherboards. As you are undoubtedly aware, we’ve identified a hardware incompatibility between certain Intel X58/X79 chipsets and our AMD Radeon™ HD 7000 Series products when run in CrossFire™ and Eyefinity. I would like to personally apologize to you on behalf of AMD for the frustration and the inconveniences this has caused you. It’s 100% understandable and while I won’t pretend to know how you and the others feel, I’m an avid gamer myself, so I do sympathize.



Nevertheless, you have my personal word that we’re doing all that we can to address this issue and that your feedback has been instrumental. We will do whatever we can from our end to resolve this and we won’t rest until it’s done.



Again, from one game to another, I apologize for the trouble and thank you once again for your continued patience. Stay tuned on the forums as we will provide any and all updates we get. If you have any questions please feel free to reach out to myself or Juanlo. Thanks again and we’ll be in touch.
Click to expand...

WqboM.jpg

Hope thats of some help.


TL : DR

A fix is coming.
 
As above the only way I have found to be able to run Eyefinity (on this x79 chipset) is to run with the RC11 driver dated from January this year (!)

I thought id see what kind of performance hit they made; so a quick session on 3D Mark 11:

7970 tri-fire (stock) with 3930k (@ 4.625) on RC 11 (Eyefinity Enabled) - 14,005
http://www.3dmark.com/3dm11/4906256

7970 tri-fire (stock) with 3930k (@ 4.625) on RC 11 (Eyefinity Disbled) - 14,008
http://www.3dmark.com/3dm11/4906285

7970 tri-fire (stock) with 3930k (@ 4.625) on 12.11 Betas (Eyefinity Disabled) - 20,622
http://www.3dmark.com/3dm11/4889244

Roll on new working CF/TF/Eyefinity drivers with 12.11 (or better :P) performance :|
 
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