AMD Delivers Frame Pacing “Fix” Via Driver Update

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Jeffredo

I don't know whether to trust they'll actually get a DX9 fix in a timely manner or just return the HD 7770 2GB I bought a week ago. I'm getting damned tired of the hitching/stuttering in Skyrim even when the FPS is generally high.

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The Mac

this is ONLY for crossfire.

It has zero effect on single GPUs.

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dgrmouse

I don't think any software update is going to help the previous bloke, but neither do I agree that frame pacing is a problem exclusive to multi-chip graphics rigs. It might be that AMD will continue to drive down frame latency, which would certainly affect single-card users.

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The Mac

double post

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The Mac

This does NOT drive down frame latency.

It basically smoooths it out by delaying the faster rendered alternate frame.

Frame pacing is ONLY for multi GPU setups.

Certainty advances in driver technology as whole will help single gpu setups but not frame-pacing which is what this driver is specfically targeting.

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vrmlbasic

Hilariously this driver update has made it so that my 2nd card does not show up at all. I was wondering why I was seeing massive framerate drop and now I know. Here's hoping a restart will fix this so I don't have to rollback my drivers.

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limitbreaker

Correct me if I'm wrong but isn't frame pacing only an issue with vertical sync off? No benchmark site that I know of has even tested this with vertical sync.

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dgrmouse

VSync simply locks the frame buffer during screen refreshes. It doesn't impact the rate at which the renderer samples a scene. If you consider what must happen when the frame rate drops below the refresh rate, it's easy to see how VSync could actually exacerbate the situation. That's not to say, however, that it's only a factor in low-speed situations. You could instead ponder the situation with a triple-buffer - a secondary buffer is "blitted" to the screen every v-blank, but there's a tertiary frame buffer upon which the scene is refreshed as fast as possible. Even though the display will update at a regular interval, the timeline of the scene samples need not be regular or even in any way. It's these irregularities that cause micro-stutter.

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warptek2010

I'm confused. Shouldn't the overall frame rate be higher with the new beta driver? While the micro-stutter issue seems to be fixed they appear lower in frame rate.

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The Mac

no, it should be a little lower.

The frame rate you were seeing before was artificially high due to the tick-tock behavior of the frame latency.

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RUSENSITIVESWEETNESS

Single GPU all the way.

I'm shocked that technology this mature still has such obvious problems. I must conclude that, because so few consumers actually run with these set-ups, manufacturers devote very little resources to ironing out the bugs, big and small.

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dgrmouse

The issue is exacerbated in crossfire setups, but as you'll see in the above graphs it is evident even in single-card setups. It's funny that folks criticize monitors with response time in the double-digit millisecond range, but the average frame latency from the video board alone in these tests can be upwards of 140ms.

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justinadams

just tried this. worked great. noticeable difference.

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vrmlbasic

Is this only for the 7990? I don't think that I've really noticed this with any games on my 68XX Xfire setup but even if I were I'm only playing DX9 games so I'm SOL as of yet with this update.

Do bona fide DirectX 10 and 11 games really exist, in an amount that can't be counted on one hand? All I've really seen are games that look like DX9 games except that they have one or 2 nifty features from the later DX versions (eg:Tomb Raider).

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Ninjawithagun

There are more than 60 games (almost 70) that are 'bonafide' DirectX 11 games on the market:

http://en.wikipedia.org/wiki/List_of_games_with_DirectX_11_support

Instructions to you: Take that foot out of your mouth! :-)

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vrmlbasic

Ninjawithagun, I think that you should follow your own advice as that list is not a list of bona fide DX 11 games. Just a cursory glance of it shows games that are DX9 with a "little dash" of DX11, which is really all a 360/ps3 port can ever hope to be as those hunks of junk do not support DX11. Example: Deus Ex Human Revolution.

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Airheadq

http://en.wikipedia.org/wiki/List_of_games_with_DirectX_11_support#Upcoming_games

Newer titles are really the only ones that will have DX11 only. Most notably are EA games.

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chriszele

The new 13.8 driver will work on your 6800 series CrossfireX setup. There are some games which use a blend of DX9 and DX11, so any titles like that won't work with this driver.

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The Mac

Thats a bit misleading, of course they will work.

They just wont have the advantage of the frame pacing.

DX9 is coming next, then eyefinity.