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GTX 590 vs. GTX 580 SLI

post #1 of 22
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Assuming the leaked specs of the upcoming GTX 590 are accurate, I'm curious what others think about a GTX 590 vs. a pair of GTX 580s. I'm not really too concerned with cost, in fact I would be willing to entertain the idea of GTX 590s in SLI but my understanding is that SLI scaling is not as great beyond a pair of GPUs.
post #2 of 22
If the so called official specs are true and it only has a 612Mhz core clock, then I have the feeling the GTX 590 might just be under GTX 570 SLI and very close to the 6990 but most likely slower at very high resolutions.
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post #3 of 22
I want to know this as well, im building my new rig April 8th and I want to know whether to get this card or sli 570s
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post #4 of 22
It depends on your setup. Remember 570s don't have much VRAM. Dedicated single GPU cards in SLI are always a better option versus dual GPU cards if you have the PCI-E slots.
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post #5 of 22
Hmm I am very interested to see if it stacks up closer to 580 SLi or 570 SLi.
Although if you look at many of the games, the difference is null considering both setups have a good amount of juice.

But thats for us modders, we all know this real story here.
Its going to be the 6990 and the 590 in the ring, and there's only one belt.

Thats what its all about.
The ability to claim fastest GPU.

Price, value, noise, power consumption...that crap is out the window. smile.gif
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post #6 of 22
Two cards with the same GPU as the dual card will almost always be better.
Mostly there is no need to share the power, so each card is more "free" to push itself.

And 590 vs 570s SLI, that most likely be a bit toward the 590.
We don't really know, but generally, the 1.5GB per GPU will help a lot in terms of AA and higher resolutions.

Micro-stuttering wise, it won't matter. All SLI setups (either two cards or dual gpu card) will have stuttering in this form or another. Some games it will be worse, others will be fine.
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post #7 of 22
Quote:
Originally Posted by CallsignVega;12786146 
It depends on your setup. Remember 570s don't have much VRAM. Dedicated single GPU cards in SLI are always a better option versus dual GPU cards if you have the PCI-E slots.

Personally, I feel that two dedicated cards are going to be better than a single dual-GPU card in terms of stability and compatibility, regardless of who makes them. When I had my HD5970, I ran into a multitude of problems with it, whereas those who similarly had two HD5870's had relatively less issues overall - even though, theoretically, should be the same solution. Since moving on to my two GTX 570's, I've had a lot hassle to deal with where games just flat-out work. From what I hear, the same can be said for HD6970 Crossfire owners as well.

I feel it has a lot to do with the complex circuitry that is required to not only make the dual-GPU cards work through the internal bridge, but also to supply them enough power as well. I strongly believe that powering two cards from two different PCI-E slots, using multiple PCI-E power cables will provide cleaner and more stable power versus a single slot and two power cables.

My real world example of one may not mean a whole lot in the grand scheme of things, but it was enough to convince me to stay away from dual-GPU cards if I could help it. The only times I can see where these cards come in handy is when the amount of space within a case is limited, or the motherboard only has a limited number of available PCI-E slots. On the extreme side, there are those who may choose to run Quad-SLI (or even Quad-Fire), but even that may be limited in support. frown.gif
     
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post #8 of 22
Quote:
Originally Posted by covertash;12800607 
Personally, I feel that two dedicated cards are going to be better than a single dual-GPU card in terms of stability and compatibility, regardless of who makes them. When I had my HD5970, I ran into a multitude of problems with it, whereas those who similarly had two HD5870's had relatively less issues overall - even though, theoretically, should be the same solution. Since moving on to my two GTX 570's, I've had a lot hassle to deal with where games just flat-out work. From what I hear, the same can be said for HD6970 Crossfire owners as well.

I feel it has a lot to do with the complex circuitry that is required to not only make the dual-GPU cards work through the internal bridge, but also to supply them enough power as well. I strongly believe that powering two cards from two different PCI-E slots, using multiple PCI-E power cables will provide cleaner and more stable power versus a single slot and two power cables.

My real world example of one may not mean a whole lot in the grand scheme of things, but it was enough to convince me to stay away from dual-GPU cards if I could help it. The only times I can see where these cards come in handy is when the amount of space within a case is limited, or the motherboard only has a limited number of available PCI-E slots. On the extreme side, there are those who may choose to run Quad-SLI (or even Quad-Fire), but even that may be limited in support. frown.gif

I had xfired hd 5970 and never had a problem, and the scaling is much better on the 6*** series cards , i just switched to nvidia to give them a try, but I regret not waiting for a pair of 3gb 580s, because games are unplayable @ 2560x1600 with AA on , due to lack of vram. They should really make the vram expandable . At op if you want the best setup and money is not an issue , get either 2way sli/ 3way sli 580s or hd6990 and hd6970 in xfire
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post #9 of 22
Quote:
Originally Posted by Qu1ckset;12801251 
I had xfired hd 5970 and never had a problem, and the scaling is much better on the 6*** series cards , i just switched to nvidia to give them a try, but I regret not waiting for a pair of 3gb 580s, because games are unplayable @ 2560x1600 with AA on , due to lack of vram. They should really make the vram expandable . At op if you want the best setup and money is not an issue , get either 2way sli/ 3way sli 580s or hd6990 and hd6970 in xfire

Consider yourself lucky to not have problems with the 5970's. wink.gif

I agree AA is an issue at high resolutions. I can't go past 2X-4X in most games in Surround on my GTX 570's, and some I can't even enable at all. While I like having all my game settings maxed out, it's not entirely game breaking to have a bit of aliasing here and there.

On your point about having the RAM expandable, this is a limitation to Nvidia's architecture as the memory interface is fixed to match up with the amount of RAM. So for the GTX 580, 384-bit multiplied by 4 banks (3 memory chips in each) which gives you 1580MB of VRAM. Similarly, that's how we achieve the 1280MB VRAM with the GTX 570, due to the 320-bit memory interface. It just would not be possible to give 2GB at this point. However, the GTX 550 is the first attempt that Nvidia has made with mixed memory interface and chips so there is hope for the future.

I also feel the VRAM issue is being overstated here (in the the forums in general) as well. Only 1-2 short year(s) ago, we were still using 1GB VRAM for most high end cards and even then there were many people who used Eyefinity, Surround, and/or 2560x1600 displays with those same cards. Sure there were VRAM concerns back then too, but hardly many complained about this being an issue until the 2GB cards really started rolling out in the last few months. I feel this topic is going to steer into the same direction as micro-stuttering and bottlenecking where people exasperate an idea and take it out of proportion.

For what it's worth, I monitor my VRAM usage in Surround, and there are only a few titles where I am constantly hitting my limits and notice a severe drop in performance. Most everything else plays well even on my cards, which is why I'm sure "regular" GTX 580's should not have much problems as well at my resolution. (I'll confirm that in a few short weeks when my Step Up completes. biggrin.gif)
Edited by covert ash - 3/20/11 at 11:18am
     
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post #10 of 22
GTX 580 sli will pwn the GTX 590... same as every other dual gpu card, 2 of its gpu's will be fully unlocked and be clocked faster
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