Eyefinity

Somewhere around 2006 - 2007 ATI was working on the overall specifications for what would eventually turn into the RV870 GPU. These GPUs are designed by combining the views of ATI's engineers with the demands of the developers, end-users and OEMs. In the case of Eyefinity, the initial demand came directly from the OEMs.

ATI was working on the mobile version of its RV870 architecture and realized that it had a number of DisplayPort (DP) outputs at the request of OEMs. The OEMs wanted up to six DP outputs from the GPU, but with only two active at a time. The six came from two for internal panel use (if an OEM wanted to do a dual-monitor notebook, which has happened since), two for external outputs (one DP and one DVI/VGA/HDMI for example), and two for passing through to a docking station. Again, only two had to be active at once so the GPU only had six sets of DP lanes but the display engines to drive two simultaneously.

ATI looked at the effort required to enable all six outputs at the same time and made it so, thus the RV870 GPU can output to a maximum of six displays at the same time. Not all cards support this as you first need to have the requisite number of display outputs on the card itself. The standard Radeon HD 5870 can drive three outputs simultaneously: any combination of the DVI and HDMI ports for up to 2 monitors, and a DisplayPort output independent of DVI/HDMI. Later this year you'll see a version of the card with six mini-DisplayPort outputs for driving six monitors.

It's not just hardware, there's a software component as well. The Radeon HD 5000 series driver allows you to combine all of these display outputs into one single large surface, visible to Windows and your games as a single display with tremendous resolution.

I set up a group of three Dell 24" displays (U2410s). This isn't exactly what Eyefinity was designed for since each display costs $600, but the point is that you could group three $200 1920 x 1080 panels together and potentially have a more immersive gaming experience (for less money) than a single 30" panel.

For our Eyefinity tests I chose to use every single type of output on the card, that's one DVI, one HDMI and one DisplayPort:

With all three outputs connected, Windows defaults to cloning the display across all monitors. Going into ATI's Catalyst Control Center lets you configure your Eyefinity groups:

With three displays connected I could create a single 1x3 or 3x1 arrangement of displays. I also had the ability to rotate the displays first so they were in portrait mode.

You can create smaller groups, although the ability to do so disappeared after I created my first Eyefinity setup (even after deleting it and trying to recreate it). Once you've selected the type of Eyefinity display you'd like to create, the driver will make a guess as to the arrangement of your panels.

If it guessed correctly, just click Yes and you're good to go. Otherwise ATI has a handy way of determining the location of your monitors:

With the software side taken care of, you now have a Single Large Surface as ATI likes to call it. The display appears as one contiguous panel with a ridiculous resolution to the OS and all applications/games:


Three 24" panels in a row give us 5760 x 1200

The screenshot above should clue you into the first problem with an Eyefinity setup: aspect ratio. While the Windows desktop simply expands to provide you with more screen real estate, some games may not increase how much you can see - they may just stretch the viewport to fill all of the horizontal resolution. The resolution is correctly listed in Batman Arkham Asylum, but the aspect ratio is not (5760:1200 !~ 16:9). In these situations my Eyefinity setup made me feel downright sick; the weird stretching of characters as they moved towards the outer edges of my vision left me feeling ill.


Dispite Oblivion's support for ultra wide aspect ratio gaming, by default the game stretches to occupy all horizontal resolution

Other games have their own quirks. Resident Evil 5 correctly identified the resolution but appeared to maintain a 16:9 aspect ratio without stretching. In other words, while my display was only 1200 pixels high, the game rendered as if it were 3240 pixels high and only fit what it could onto my screens. This resulted in unusable menus and a game that wasn't actually playable once you got into it.

Games with pre-rendered cutscenes generally don't mesh well with Eyefinity either. In fact, anything that's not rendered on the fly tends to only occupy the middle portion of the screens. Game menus are a perfect example of this:

There are other issues with Eyefinity that go beyond just properly taking advantage of the resolution. While the three-monitor setup pictured above is great for games, it's not ideal in Windows. You'd want your main screen to be the one in the center, however since it's a single large display your start menu would actually appear on the leftmost panel. The same applies to games that have a HUD located in the lower left or lower right corners of the display. In Oblivion your health, magic and endurance bars all appear in the lower left, which in the case above means that the far left corner of the left panel is where you have to look for your vitals. Given that each panel is nearly two feet wide, that's a pretty far distance to look.

The biggest issue that everyone worried about was bezel thickness hurting the experience. To be honest, bezel thickness was only an issue for me when I oriented the monitors in portrait mode. Sitting close to an array of wide enough panels, the bezel thickness isn't that big of a deal. Which brings me to the next point: immersion.

The game that sold me on Eyefinity was actually one that I don't play: World of Warcraft. The game handled the ultra wide resolution perfectly, it didn't stretch any content, it just expanded my viewport. With the left and right displays tilted inwards slightly, WoW was more immersive. It's not so much that I could see what was going on around me, but that whenever I moved forward I I had the game world in more of my peripheral vision than I usually do. Running through a field felt more like running through a field, since there was more field in my vision. It's the only example where I actually felt like this was the first step towards the holy grail of creating the Holodeck. The effect was pretty impressive, although costly given that I only really attained it in a single game.

Before using Eyefinity for myself I thought I would hate the bezel thickness of the Dell U2410 monitors and I felt that the experience wouldn't be any more engaging. I was wrong on both counts, but I was also wrong to assume that all games would just work perfectly. Out of the four that I tried, only WoW worked flawlessly - the rest either had issues rendering at the unusually wide resolution or simply stretched the content and didn't give me as much additional viewspace to really make the feature useful. Will this all change given that in six months ATI's entire graphics lineup will support three displays? I'd say that's more than likely. The last company to attempt something similar was Matrox and it unfortunately didn't have the graphics horsepower to back it up.

The Radeon HD 5870 itself is fast enough to render many games at 5760 x 1200 even at full detail settings. I managed 48 fps in World of Warcraft and a staggering 66 fps in Batman Arkham Asylum without AA enabled. It's absolutely playable.

DirectCompute, OpenCL, and the Future of CAL The Race is Over: 8-channel LPCM, TrueHD & DTS-HD MA Bitstreaming
POST A COMMENT

327 Comments

View All Comments

  • Qfromchicago - Friday, November 27, 2009 - link

    Windows 7 Profession
    Onkyo 805
    Diamond 5870
    Still no 3rd option for hd audio.

    Has anyone been able to work this thing
    Reply
  • charme - Friday, November 27, 2009 - link

    same here.
    no 3rd option for hd audio
    Reply
  • otni - Sunday, November 29, 2009 - link

    YES, WORKING PERFECT FOR ME...TRY THIS: PLAY THE BLUE-RAY MOVIE THEN GO TO SETTING ON POWERDVD AND CHARGES TO THE 3ER OPTION FOR HD SOUND.
    IS WORKING FOR ME, THANKS CYBERLINK
    Reply
  • FlyTexas - Saturday, November 14, 2009 - link

    What good does it do to launch this, if there are still none for sale a month later?

    Yes, I know there were a few sold up front, but NewEgg has been out for awhile...
    Reply
  • RavnosCC - Tuesday, November 17, 2009 - link

    The 57xx series are readily available, they also support HD Audio. Reply
  • RavnosCC - Monday, November 23, 2009 - link

    "As of today, new PowerDVD 9 Ultra customers will receive build 2320, which includes support for HDMI bitstreaming of undecoded (full quality) audio with ATI Radeon 5000 series graphics cards, and the Auzentech X-Fi Hometheater HD sound card. An update patch for current owners of PowerDVD 9 Ultra is scheduled to be available next Friday (11/27).

    Tom
    Cyberlink"
    Reply
  • Qfromchicago - Wednesday, November 25, 2009 - link

    Though happy that finally we will get hd audio using powerdvd, but why limit it to new customers only. It seems to me that if you can offer it to new customers, you should be able to offer it to everyone at the same time. Reply
  • Qfromchicago - Sunday, October 18, 2009 - link

    I have win 7, a diamond 5870, powerdvd 9 ultra version 2201 and still I don't get he 3rd choice for the HD audio bitstreaming. Has anyone been able to get bitstreaming to work with powerdvd 9. Thanks Reply
  • RavnosCC - Thursday, November 05, 2009 - link

    UPDATE: Looks like late November for the mythical patch...

    "Hi everyone,
    Yes... we read these forums regularly. Feedback is forwarded to the appropriate people. These forums aren't the best way for us to provide customer support, so if you have an issue, please open a support ticket through our website.

    We can't always comment on new developments... or at least we like to wait until we have a definite answer. I know everyone noticed the reviews for the ATI Radeon 5000 series graphics cards, where certain reviewers were using a pre-release version of PowerDVD 9 to demonstrate HDMI bitstreaming of Blu-ray audio. Support for this feature will be in the next PowerDVD update (patch), which will be available later this month. I don't have a firm date on this, but we're trying to expedite it. Please keep in mind that each of our regular updates includes fixes for new BD titles and new (or forthcoming) hardware / drivers across the PC ecosystem, and so the feature you are anxiously waiting for isn't the only thing that we need to include in the update. Of course, each update has to go through a full quality assurance testing procedure, to make sure that none of the changes introduced any new issues.

    So... sorry for going quiet on you... but I and others read every post in this thread and other relevant threads, following up as needed (in some cases, directly through private messages on these forums).

    Tom
    Cyberlink"
    Reply
  • RavnosCC - Wednesday, October 28, 2009 - link

    I am in the same boat, with Vista, I have powerdvd 9 ultra fully patched and still no third option for hi-def passthrough... :-/ Reply

Log in

Don't have an account? Sign up now