JoshMST said:And yes, the more I look into this, the more it becomes apparent that the TMDS transmitter on the X8x0 series cards is also holding it back, but then how do current X800 cards successfully power these 23" and 24" widescreen LCD's @ 1920x1200 @ 60 Hz? Reduced blanking is obviously part of it.
Rys said:You can do 1920x1200 at 154MHz pixel clock with single-link PanelLink DVI.
Karma Police said:
JoshMST said:Sometimes I feel I stepped into the Department to Reduce Redundancy Department.
jb said:Josh,
that "Knee-jerk reaction" commit was not a very good one nor accurate IMHO. Sure there are some limitations. But there are also some neat things that SLI is not able to deal with or was not at first. The new "super AA" modes (and I know NV matched them now, but ATI was first to annouce it) and no profiles needed (and yes I know it only takes a few moments to add a profilem but no matter what NOT having to add one is an advatange like it or not) are two things that help it stand out. Usally knee jerk reactions seldom have anything new to add to the mix. Cross fire does.
trinibwoy said:And not having to enable a default mode in the control panel is not any advantage to speak of given the user base for dual-GPU configurations.
jb said:Josh,
I have heard simular things. I just objected to the "knee jerk" part as that usally implies little thought and clearly lots of it and engineering work has went into x-fire...
If ATI had taken their time and created a GPU that didn't need a compositing chip, or an external dongle, then I would gladly take that comment back.
jb said:I disagree as anytime I dont have to something and still get some gain or better IQ than its a good thing.
JoshMST said:So, I don't think "knee-jerk" is out of line. If ATI had taken their time and created a GPU that didn't need a compositing chip, or an external dongle, then I would gladly take that comment back.
Maybe, but if it's still got severe flaws at launch, they may have some stigma still attached to their products if/when they do release a good dual-GPU solution.trinibwoy said:I think the most obvious validation of this stance is the fact that they tried to bring Crossfire to the X800 line. Even the R520 implementation seems to be tacked on. So yes, it was a "knee-jerk" response to Nvidia's SLI. Can't blame them though - that would have been two generations without a dual-GPU solution - a big marketing no-no.
JoshMST said:jb... the more I dig into this, the more interesting things I pull up.
Crossfire is supposed to bring good features, but there are some serious questions about if it delivers.
SuperAA is rumored not to be able to work with OpenGL titles yet, only D3D. I do not have a CrossFire setup, so I can't test this out. This is just something that I have heard and have heard repeated by others. It could be absolute FUD for all I know, but it is something that is out there.
SuperTiling may not work with odd numbered quad cards. So if a person has a 12 pp Pro version, it will not support SuperTiling.
SuperTiling will be the default rendering mode... unless Catalyst AI says that it would work better with Scissor mode or alternating frame mode. Sounds a bit like profiles to me? Throw in the issue about odd numbered quad cards...
Also, it appears that the compositing engine doesn't have any built in RAMDACs or TMDS transmitter, so it has to rely on external devices... which I am guessing is the reason that Crossfire does not actually work above 1600x1200 at this time (a little bird I trust, and not from the green camp, has verified this to me).