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Eyefinity = wut?

Gerard

Gerard

Gerard

Caporegime
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Anyone yet figured out why ati havnt got eyefinity working with 2 seperate cards but it apparently comes working out of the box with the 5970..which uses crossfire? Seems a bit of a weird situation considering the 5970 uses internal crossfire to work with 2 gpu's. :confused:
 
This is annoying and should be resolved with drivers, seeing as the 5970's using BETA drivers, that'll be why, they're testing it out, derives the term BETA.
I'm looking to get another 58XX card for eyefinity instead of getting a Dislay port monitor.
Superewza said:
Do you have two or more monitors?
Click to expand...


That's got nothing to do with anything.
 
I'm pretty sure Eyefinity is how the cards treat more than one monitor as a single desktop - so you can play games and other software that isn't designed to run on more than one screen over several. Or have i bitten completely the wrong end of the stick here?
 
He's asking why the 5970 will support eyefinity, yet two 5870's in crossfire won't/
How hard is that to understand?
The answer being the 5970's using beta drivers. They're testing the feature on a card that constantly uses crossfire.
 
Meaker said:
I think its a bandwidth issue with massive resolutions over the limited bus.
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Huh?........
It works on the 5970, NOT crossfired 5870's.

On the tech demo's they've got crossfire eyefinity working, it's on progress and will be with us 9.12/9.13/9.14 or summit.
 
The 2 GPUs on the 5970 are linked with a PLX PCI-E bridge chip, that's still using PCI-E tech to connect them so presumably when the BETA drivers' features are plopped into the official cats it will work the same.
 
Orangey said:
The 2 GPUs on the 5970 are linked with a PLX PCI-E bridge chip, that's still using PCI-E tech to connect them so presumably when the BETA drivers' features are plopped into the official cats it will work the same.
Click to expand...

Yeah I'd presume the same. There's no reason it shouldn't work as Crossfire still works with the whole mirrored memory system doesn't it?
 
Meaker said:
Yeah except the chips are right next to them and have a dedicated link that ATI can play around with.
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That's not really how it works.

What people saying in this thread is that they want eyefinity to work with crossfire so that they can use (potentially) all 6 outputs from 2 cards, or use 2 DVIs from one, and one from the other to avoid needing a DisplayPort monitor.

Outside of that, the only reason we currently can't do it is that they're still working on it in drivers rather than because the 5970 has a "dedicated link".
 
Martini1991 said:
Which is what I said, hence why they're doing it with the 5970, it's the logical thing to beta test it with a crossfire card.
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I would say the reason the 5970 has it working is because they don't have to account for as many variables you would get with a 5870 crossfire set up.

I wouldn't say it would be the logical thing to do, more of an essential thing to do, as they couldn't and shouldn't release it until they have eyefinity working with it.
 
Martini1991 said:
But to test it, it's logical..
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Logic is subjective on a per person basis...

They do test it, my point was that rather than people who buy 5970s being beta testers for ATi, ATi have put more time in to making eyefinity work on the 5970 over crossfired 5XXXs due to the 5970 being a "single product".

It makes more sense to get it working on a 5970 than it does on 5870s and 50s and there are less variables.

Even then, for all we know the 5970 drivers work with other 5XXX and allow eyefinity in crossfire mode.
 
Gerard said:
Anyone yet figured out why ati havnt got eyefinity working with 2 seperate cards but it apparently comes working out of the box with the 5970..which uses crossfire? Seems a bit of a weird situation considering the 5970 uses internal crossfire to work with 2 gpu's. :confused:
Click to expand...

Yes, hardocps 5970 article explains this, basically the 5970 has a predictable set up since it's the same for each card, they know what lanes are used in the bridge chip between the 5970 GPUs so eyefinity is much easier to program.

In a standard crossfire set up there are many more configuration of cards/connectors which makes it much more complicated to get eyefinity running on.

Source:

http://www.hardocp.com/article/2009/11/18/amd_ati_radeon_hd_5970_video_card_review/1
 
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