Hardwarezone has some test results (3DM03, 3DM05, Doom3):
http://www.hardwarezone.com/articles/view.php?cid=3&id=1543&pg=5
http://www.hardwarezone.com/articles/view.php?cid=3&id=1543&pg=5
Crossfire Info
- Thread starter trinibwoy
- Start date
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I'll doube check this, but I should imagine the A.I. Selections goes something like this:
Cat AI off = no multirendering
Cat AI on (without game profile) = default mode on dependant on API/board configuration (either Scissor or tiled)
Cat AI on (with game profile) = selected mode for game (either AFR or scissor of DX or AFR or tiled for OGL)
FSAA Slider > 6x = "Super AA"
Cat AI off = no multirendering
Cat AI on (without game profile) = default mode on dependant on API/board configuration (either Scissor or tiled)
Cat AI on (with game profile) = selected mode for game (either AFR or scissor of DX or AFR or tiled for OGL)
FSAA Slider > 6x = "Super AA"
Unknown Soldier
Veteran
Dave . .if I may ask.. on HOCP I see Kyle states that the card can apparently do 32AF.
http://www.hardocp.com/article.html?art=Nzc4LDM=
Since I haven't seen anyone else claim this .. I'd like to know from you if it is possible?
Thx
US
http://www.hardocp.com/article.html?art=Nzc4LDM=
Since I haven't seen anyone else claim this .. I'd like to know from you if it is possible?
Thx
US
Unknown Soldier
Veteran
That's not what was discussed before on the forums. Apparently the R520 would work with a R420/480(or so the rumours that were flying around said).
I would think that the pipe lines would have to be the same .. since clock speeds don't matter. Maybe the pipes will automatically clock down as mentioned in the crossfire previews .. hence the people saying that if you get a R520 and a R480 .. the R520 would down clock to R480 and be slower than it can be.
Saying that .. if the R520 can be used to render a pictures SM3.0 shaders and the R480 renders the other shaders .. maybe ATI might have a crossfire SM3.0 Cross platform.
It would be interesting ... seeing as what they've done to the current series with Crossfire.
US
I would think that the pipe lines would have to be the same .. since clock speeds don't matter. Maybe the pipes will automatically clock down as mentioned in the crossfire previews .. hence the people saying that if you get a R520 and a R480 .. the R520 would down clock to R480 and be slower than it can be.
Saying that .. if the R520 can be used to render a pictures SM3.0 shaders and the R480 renders the other shaders .. maybe ATI might have a crossfire SM3.0 Cross platform.
It would be interesting ... seeing as what they've done to the current series with Crossfire.
US
Unknown Soldier
Veteran
k 
US
US
Unknown Soldier
Veteran
Unknown Soldier said:
I'm still waiting to hear about the 32 AF.
US
ATI FAQ: http://www.ati.com/products/crossfire/faq.html#1
A little poke at NV section in there. But I think the thing I hadn't seen elsewhere is that the X800 versions are coming out later than the X850 versions. "Mid-July" vs "August".
Edit: HMM! What might this be about?
A little poke at NV section in there. But I think the thing I hadn't seen elsewhere is that the X800 versions are coming out later than the X850 versions. "Mid-July" vs "August".
Edit: HMM! What might this be about?
DaveBaumann said:
Wavey, ATI's FAQ says:
15. Do you need a driver profile for CrossFire to work?
A No. CrossFire is enabled by default for all 3D applications. With Catalystâ„¢ A.I. enabled, the preferred rendering mode is selected for targeted applications. For applications that are not identified in Catalyst A.I., or when Catalyst A.I. is disabled, default multi-GPU rendering modes are offered.
http://www.ati.com/products/crossfire/faq1.html#11
With regards to the mainboard issue, as Dave said, VIA have SLI (and hinted at Crossfire support) up and running (and you can see it at VTF at Computex if you ask nicely) as we speak. They're actively working with NVIDIA for that and fully expect an official driver in due course.
I'd imagine that Crossfire will support everything from 955 to nForce4 SLI in due course, too.
I'd imagine that Crossfire will support everything from 955 to nForce4 SLI in due course, too.
Unknown Soldier said:
R3D is reporting that as well in their piece, but it isn't entirely clear to me if Ratchet's article is a compendium/analysis of what he picked up reading the other sites (in other words, if he's just repeating what Kyle said on this point) or info from ATI.
I'm gonna go out on a limb here and suggest that mebbe they use something like their SuperAA on the AF and sort of offset the filtering a little 'tween the two cards and that's where they get the "32 AF" from.Unknown Soldier said:
I betcha it's really SuperAF®, or mebbe even ExtremeAF®....
THEM!!!!
(Sorry, I think that everytime I see your sig)
digitalwanderer said:I'm gonna go out on a limb here and suggest that mebbe they use something like their SuperAA on the AF and sort of offset the filtering a little 'tween the two cards and that's where they get the "32 AF" from.
I betcha it's really SuperAF®, or mebbe even ExtremeAF®....
Yes, that's pretty much the way R3D described it.
Really? I wouldn't know.geo said:
It makes sense. I think Brent summed up Crossfires three main advantages over the competition best:
1. Non-profile dependancy
2. Different brand cards compatible
3. SuperAA
The big downside being right now those are Crossfire's big advantages on paper, it has yet to prove itself.
Oh, Brent's article is over here at HardOCP and well worth a read.
Maybe the render the odd lines on one card, the even lines on the other with each set slightly jittered. Next, they aproximate the pixels between the lines of each, and treat them as an AA subsample to be paired with the rendered pixels in the other.
I'm sure this must be it!
Nite_Hawk
I'm sure this must be it!
Nite_Hawk
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