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[TPU] More GeForce GTX 690 Details Surface - Page 6

post #51 of 63
Quote:
Originally Posted by Just a nickname View Post

Have you checked the Toms review posted in my post above? I am not taking this from my hat lol. It's good if you don't notice the stutter Nvidia is doing well in multiple GPU solution.

How about with my own eyes? I've seen it on some and not on others. I judge my experiences on my own and not others. Also, i've used 7970s - 580s - 680s, 460s and 5000s / 6000s. I'll be a broken record yet again, i've seen it on some and not on others. By all means think what you think though, you're welcome to your opinion thumb.gif

Also, sorry if that sounded snide. But if you're basing your opinion on everything from using crossfire 5870's, i'd suggest not doing that. It is not representative of other products on the market now.
Edited by xoleras - 4/10/12 at 11:53am

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post #52 of 63
Quote:
Originally Posted by Mhill2029 View Post

Never been too keen on Dual GPU cards, so many issues with them (microstuttering, poor scaling, power draw and heat). And i doubt these niggles will change with the GTX690.

Not sure about a single dual gpu card, but my 2 460's in SLI work wonders. I never get microstutter or heat issues, scaling is only an issue on games older than 6 years old but then again 1 gpu is only necessary for games that old....
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post #53 of 63
The 590 (being an owner) has been nothing but pleasant. They are basically two 70% 580s, but back when they were released the 580 was easily 550-600USD, whereas the 590 was 700USD. The price is justified.

I went from a 5870 to a 590. Double the power of a 5870 in a single card. Didn't even have to upgrade my 650watt PSU.

Microstuttering? None for me.

I am definitely interested in a 690, but looking at 680SLI, I am not too interested.

I can manage P10100/X3450 on my 590. If the 690 can do P20000/X7000, whilst using my 650watt PSU, I will definitely jump on the 690. As far as I know, and what has been displayed, that won't happen.
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post #54 of 63
I have some pretty mixed feelings about dual-gpu cards. I've owned two now and both have been a huge PITA at times.

Overall, I think I'll pass and go for a single stronger gpu. It might not get quite as high of a frame rate, but after gimping they do to each gpu to fit two in one card, microstuttering, sli-scaling and sli compatibility, those few extra frames get overshadowed pretty quickly by the issues and price tag.
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post #55 of 63
This is my first post here so I don't expect to be taken seriously by everyone. For those who listen however, I would like to try and clear up some misinformation about microstutter. FYI all of my observations were made with crossfire. Also, some of you probably already know everything I am about to say.

First off, microstutter is directly tied to the usage of the GPUs. The closer you get to 100% usage, the greater the frame time variance (this is what microstutter really is) becomes. This is why it is often suggested that vsync or frame rate limiters be used as a "fix" for microstutter. By artificially limiting the load on the GPUs you also also decrease the variance in frametimes.

With this in mind we can look at other scenarios where GPU usage is less than 100% such as poor crossfire scaling or CPU limited cases. This is where I believe the myth of adding a third to eliminate microstutter has come from. As more GPUs are added, we are far more likely to encounter poor crossfire scaling or become CPU bound.

Now I know the first thing someone is going to ask me is if I read the Tom's article. The answer is yes, several times. And, without being able to do my own testing (I don't own Call of Juarez) I am not sure how to explain their results. I do know that GPU usage doesn't have to be much under 100% to begin to eliminate microstutter (really under 95% tends to lessen it drastically). I also know that they are showing some questionable (>100%!) crossfire scaling in their benchmarks for the 6870s that tend to indicate something strange is going on.
Edited by mariyoshikong - 4/10/12 at 10:00pm
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post #56 of 63
Microstutter has nothing to do with latency like so many people in this thread are saying. Having 2 gpus on a single PCB does nothing to stop it.
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post #57 of 63
Quote:
Originally Posted by DuckieHo View Post

They still need the GK110 for their high-margin Tesla and Quadro. AMD currently has a chance to regain GPGUP marketshare.
Hey Duckie,

This may be off topic, but since you brought up GPGPU marketshare....

What applications favor AMD cards over Nvidia cards, or at least have AMD cards match Nvidia cards?

I'm talking about software like Adobe Premiere Pro for example, as you know the Mercury Playback Engine was built with CUDA, can AMD cards finally make some head way there? Or are they still not supported?

I know I always hear talks about OPENCL, but have yet to see any useful software that was built with it....

I haven't really followed Folding Performance, how well does the 7970 fold now compared to say a 580 / 680?
Edited by 2010rig - 4/10/12 at 11:52pm
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post #58 of 63
Quote:
Originally Posted by Tslm View Post

Microstutter has nothing to do with latency like so many people in this thread are saying. Having 2 gpus on a single PCB does nothing to stop it.

It has everything to do with latency, latency it takes to transfer frame from secondary card to the first for display output.

Since frame from primary card have no significant latency to get to output buffer it is being displayed for set amount of time (depending on FPS), while frames from secondary cards have to be transferred to primary card's output buffer, it takes time and as a result we get uneven display times for a every frame.
Edited by Nowyn - 4/11/12 at 12:58am
post #59 of 63
I have owned both single pcb cards and dual pcb cards and although the 295's had driver problems in the early day of 2009,i dont get any stutter at all from using 2 of these in quad sli and i can play anything at all today at max detail with some AA on my 930 running at a stable 4.4ghz on water.

I put microstutter down to the motherboard as my mate had some 6970s in cfx which worked great but as soon as he sold them to his next door neighbour he had cfx problems,microstutter,etc,we tried everything possible to fix it,reinstallation of so and drivers,diskcleanup,disk defrag etc.


I put microstutter down to the motherboard and i get no problems with dual gpus and i will be buying more dual gpus when they become available.
post #60 of 63
Quote:
Originally Posted by Mhill2029 View Post

I'm not really talking about a single Dual GPU card, we need more than 2 GPU's for it to show itself.
Example: 2x590's is worse than 4x 580's.

No, it's not at all. The only reason they're "better" is because nvidia has throttled the voltage and clock speeds on the 590. If voltage and clock speeds were that of the 580s you would get much better performance on the 590s. For one, you're using a full x16 pcie lane compared to x16, x8, etc. Two, the distance between card channel is shorter, allowing for better overclocking.
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