GTX 295 and Microstuttering

[ChrisRay]

Originally Posted by m3dude

true, but microstutter on a single gpu is extremely rare. its extremely common on mgpu.

No. Inconsistent inter-frame delay occurs on "All" GPUS. It's simply a matter of degree. A multi GPU setup may or may not be more spikey dependent on alot of varying issues. The main issue with any multi GPU is to avoid constant inter-frame hiccups. In which case you arent really seeing a benefit of multi GPU.

Frame 1: 15 MS
Frame 2: 60 MS
Frame 3: 85 MS
Frame 4: 150 MS

Whats more likely to happen with SLI is.

Frame 1: 15 MS
Frame 2: 31 MS
Frame 3: 44 MS
Frame 4: 61 MS
Frame 5: 77 MS
Frame 6: 89 MS
Frame 7: 130 MS

But keep in mind,. That something like this will vary greatly on your actual frame per second to begin with. If your frametimes are already lower. Those Occasional MS spikes will be larger and more noticable.


The first case scenerio should not be happening. And is usually the result of a poor AFR profile that probably isn't scaling well to begin with. Something that can actually be adjusted at a driver level. No SLI /multi GPU setup is anymore or any less prone to have it happen. The more GPUs you throw it at. The less likely you'll see it since each GPU will render a frame as fast as possible.


The other reason for microstuttering could be

1) Hard drive thrashes/reads
2) System Memory Problem
3) GPU Memory problem
4) Combination of 2 and 3. Which was quite common on say a 9800GX2.

[HYBRID]

Originally Posted by jeong

I apologize if it needs be in the screenshot section. Should moderators feel necessary to move it, please do. But given the topic on MS of 295, I think it's more relevant to post here rather than in the screenshot section. My point: no MS with Crysis franchise, Mirror's Edge, L4D, CoD5, Assassin's Creed, GTA4, FC2, TR:Underworld, Dead Space, RA3, Gears of War. Everything maxed out except in Crysis. Not only did I not see any MS, fps is hands down astonishing. If you are reluctant about getting one of these beasts b/c of MS, worry not.

Glad to hear it......I couldnt agree more.

[Bee_Dee_3_Dee]

Originally Posted by jeong

I apologize if it needs be in the screenshot section. Should moderators feel necessary to move it, please do. But given the topic on MS of 295, I think it's more relevant to post here rather than in the screenshot section. My point: no MS with Crysis franchise, Mirror's Edge, L4D, CoD5, Assassin's Creed, GTA4, FC2, TR:Underworld, Dead Space, RA3, Gears of War. Everything maxed out except in Crysis. Not only did I not see any MS, fps is hands down astonishing. If you are reluctant about getting one of these beasts b/c of MS, worry not.

Originally Posted by HYBRID

Glad to hear it......I couldnt agree more.

Me Glad too. I luv all those games. And sooooo Glad that I'm trading up to the GTX295 and NOT the GTX285. My GTX295 will be here in a week.

[mailman2]

Originally Posted by Bee_Dee_3_Dee

And I can't imagine that after all the complaining everyone did about the POS 9800X2, that nVidia did not cringe endlessly, and as a result they would not repeat releasing another POS MSing Sandwiched Card.

...and why not? They did it with the 7950GX2 and 9800GX2. They've fooled me twice now. Those were the WORST cards I've ever owned.

[Remmy1]

Ya, it would be interesting to hear what Nvidia truly thinks about the SLI Microstutter problem. It would be reassuring to hear them admit there was a problem and it has been fixed whether through the driver updates or some hardware modification allowing the two GPUs to better work together.

It's just concerning that it has been reported with every dual GPU card on the market from the 4870 X2s to the 295. It sounds like it may be better but that type of chit drives me crazy if I even notice it at all. And my SLI setup was disappointing to say the least.

[Bee_Dee_3_Dee]

Originally Posted by mailman2

...and why not? They did it with the 7950GX2 and 9800GX2. They've fooled me twice now. Those were the WORST cards I've ever owned.

They got me with the 9800X2 so I'm jumping aboard the SS FOOLS SHIP and getting an GTX295!

But I think the difference is the 2X448 Bit Memory Bus! Just think of how poor the 9800X2 was without a proper SLI Driver config. IT WAS WORSE THAN AN 8800!!! (NVIDIA!)

Added with MS, that got me the most pissed-off of all.

So I'm ready to sink, but my Life Jacket is made up of the following and I trust it:

I'm positive that all the criticizing on the NVNews forums about the 9800GX2 influenced nVidia in regards to making a better GTX295. Combining all the criticizing, with a 2X448 Bit Memory Bus, plus all the reviews I've read on the nVNews Forums this month, I believe has resulted in one kick ass card.

Heads woulda shoulda rolled and maybe did with the 9800X2 and 7850X2. But if the GTX295 suck(s)ed, ppl at nVidia really really really know it this time! I hope us ppl that bought the 7950GX2 and 9800GX2 were just Guinea Pigs. And for me the 8800GTX was like the beginning of a mission to another planet. The 9800X2 and 7850X2 were just disasters that come hand in hand with any grandiose endeavor.

[pureoption]

Hi,

I was about to order 2*GTX295's to run on quad then stumbled on this as I didn't know whether it was myth or fact.

See it for yourself:
Around 2 minutes 45 seconds on micro stutter.
http://uk.youtube.com/watch?v=CHPtbDz7xgE

Single GTX 295 is much less noticable but in SLI its probability increases dratically.
Guess I'm going with tri GTX 285 instead.

Thanks All.

Pureoption

[m3dude]

yep, its also quite noticeable at 1:03 during the entire far cry 2 scene. its pretty obvious to me that its an issue but all the mini marketers here claim you need superman vision to notice it . that or they have magic computers sprinkled with fairy dust that somehow dont suffer from this issue.

Won't most cards stutter at that resolution and graphics setting though? I mean, I assume that the 295 is going to be going through those scenes much smoother than a GTX 285 would.

[-=DVS=-]

Originally Posted by pureoption

Hi,

I was about to order 2*GTX295's to run on quad then stumbled on this as I didn't know whether it was myth or fact.

See it for yourself:
Around 2 minutes 45 seconds on micro stutter.
http://uk.youtube.com/watch?v=CHPtbDz7xgE

Single GTX 295 is much less noticable but in SLI its probability increases dratically.
Guess I'm going with tri GTX 285 instead.

Thanks All.

Pureoption

If quad SLI stutters tri SLI not gonna be any different imho, as for vantage its stutters with single core also depending on scene i would not call it microstutter, id say its poor engine considering its not even a game but slideshow , as for FarCry 2 i don't get stuttering with single 295 or 280, don't have quad to test....
But there is alot of confusion going on any kind of stutter =! microstutter

[pureoption]

I think it's to do with 2GPUs on one card (GTX295) x2 (Quad) causes much more micro stutter rather than 3x285 single GPU card on tri sli or just a single GTX 295. I asked another guy whom did both setup and tested on you tube as well the guy on my last post(different source):

(The 2nd guy also confirmed GTX295 micro stutter)
http://uk.youtube.com/watch?v=QN4Vb8E5er8

(No micro on tri sli GTX285 but suggests if not overclocking and using stock then just go for 3xGTX280 rather than 3xGTX285)
http://uk.youtube.com/watch?v=xKoFh_wZExc

So I asked the 2nd guy:
"
- pureoption
Nice one mate! Did you get any micro stutter on the tri GTX285 setup cos you mentioned GTX295 quad was unplable due to M-stutter?
- R3APERvsTYETREE (reply)
No microstutter on the tri setup its just an issue with the 295 quad sli hardware
"

Thanks all.

Pureoption

[-=DVS=-]

pureoption is a bot , replied 1 second after i posted