Microstutter

[jediknight73]

To the OP, I guess that you ask this because you said in my hot deal thread that you are interested with the 2GB HD 4850 X2. I just want to tell you that the card is not at $330 anymore but already at $290 AR!!!

yeah I saw that Im hopeing it gets lower by tax time. sad to see my Topic flamed .

 

[kioras]

I think microstutter goes down, as the memory bandwith, and the interconnect bandwidth on the cards goes up, thats why with the later 4870x2 and gtx260+ cards in SLI the issue has decreased.

Will probably exist until you get something like the ati sideport working on the chips, with a shared frame buffer

 

[Starcrossed]

sad to see my Topic flamed .

It's a cruel world.

 

[Saabjock]

I think microstutter goes down, as the memory bandwith, and the interconnect bandwidth on the cards goes up, thats why with the later 4870x2 and gtx260+ cards in SLI the issue has decreased.

Will probably exist until you get something like the ati sideport working on the chips, with a shared frame buffer

I think you may be right. I've certainly noticed this anomaly on my computer with racing sims. I have a 512 mb version of the HD4870 and a GTX260 (192).... They're both really nice mid-range pieces of hardware, but I've noticed that while "fluid' smooth from the driver's perspective...the HD4870 microstutters during external (TV) camera views, while the GTX260 is smooth as glass. I've tried them individually with clean driver installs on both XP and Vista. Funny thing is that the HD4870 has higher peak framerates. They just seem to fluctuate more over the min to max range....which may be responsible for the stutter.

 

[Raap]

According to this statement, microstutter = low framerate.....

No, you're drawing the wrong conclusion. The problem first becomes apparent at low framerates, this doesn't mean the problem *is* low framerates. It's not even a symptom of low framerates, it's just that we can't perceive it at high framerates.

 

[butterfliesrpretty]

OKAY Since everyone in this thread has TOTALLY fucking ignored let me reiterate the laws of the hardforum for you all, since the admins word seems to fly over your heads.

[/size]

Quoted at verbatim. What the hell people. With this many stupid comments, those 3 days are going to go to permanents pretty quickly. Smarten up if you want to stay. Kyle hates this shit. Trust me.

And I swear, if you want to call me a brown noser, do it in PM's. Stop wasting time.

you're also not supposed to back seat mod. They 3 day banned a couple people with a problem, relax.

 

[dllfiles12]

Man Ive never heard of this, funny thread to read through though.

 

[unrealsword]

So basically from what I read
If your fps is over your refresh rate (say 60 on lcd) or higher on crt even though one card may slow down to 74 fps and the other keep at 80 you won't notice it because it is still above the maximum fps that can be displayed.

However if your fps is bellow your refresh rate say one card is at 60 fps and the other is rendering at 56 there will be a tiny hitch in frames being displayed. As lower the avg fps the more noticeable it will be.

From what I read ati has minimized the fps fluctuation between cards on the hd4870x2 so it's not that noticeable, but that is microstuttering.

 

[Raap]

It's not that they're rendering different amount of frames; they're rendering every other frame each, so at 60fps each gpu is rendering 30 fps( in a dual-gpu solution ). However, where a single-gpu solution will have approximately the same time between each of the frames rendered, adding a second gpu makes this delay between frames fluctuate alot more. At lower framerates this will affect the 'smoothness' of the experience.

 

[snaggletooth]

first of all, ha ha ha ha ha ha ha ha ha ha ha. ha. that's legendary. i haven't been paying attention to the videocard forums lately, what with my satisfaction using my 8800gt sli setup. i didn't realize it's gotten so bad that a sticky at the top of the forum is required. too bad.

anyways,

i'm one of the lucky folks who can't 'detect' microstuttering. i run 8800's at 1080p and can certainly detect slowdown, but fraps records those chokes appropriately.

i used to claim microstuttering as myth, but after further reading back in the summer-time (right around when the 4780x2 launched) it can certainly be measured.