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Is GTX 580 SLI enough for 2650x1600 - Page 4

post #31 of 42
Quote:
Originally Posted by covertash;13048927 
OP, I'm in agreement with james here - especially that last part. It really boils down to what games you want to play and how you want to play them. Of course, if you are looking to max out all the heavy hitting games (Crysis, Metro 2033, Dragon Age 2, etc.) then the 3GB cards would be a given, but even on a single 1600p display, you're unlikely going to see the full usage of that VRAM. However, if you're willing to compromise, you can make the 1.5GB card you already have work for you. And frankly, after spending $500 more or less on your card, wouldn't you want to see some value from it?

I play in excess of 6 million pixels (just shy of 7 million), and I can tell you that the 1.5GB 580's do a wonderful job at this resolution with anywhere from no AA to 4X AA depending on the game. At high resolutions and dense dot pitches like your's (ie. 1440p and 1600p), AA needs are highly subjective. Some may not notice or really need a high level of AA to have an enjoyable experience, while (obviously) some do.

While I think VRAM is certainly an issue that does need to be addressed, these days it seems members here automatically associate anything higher than 1080p with 2-3GB of VRAM and Crysis. Whatever happened to the enthusiast side of things? It's not all about throwing money at a problem to solve it! Play around with some settings, tweak your games a bit, and just have fun with what you have considering the fact that your card *still* represents the top echelon of enthusiast hardware. wink.gif

The main point I want to make is this: wait until your monitor arrives and play the games that *you* actually do play, and then decide where your standards for performance lie. Honesty, I think it's irresponsible of a lot of people to just dismiss your situation and just say "sell your card and get a better one." It's as if it were so easy to do (especially in Hawaii) and so easy to accept a substantial loss for a card that is barely 6 months old. kookoo.gif Remember, it's not their money you are spending - it's your own. wink.gif

This is rational, statement, and I do think you should experience this for yourself, but there has been a limitation of VRAM in the multi-monitor world and the 2560x1600 resolution users. I can understand pure zealousy of individuals telling others what they need to do with their system, but there are facts that can be seen.

I just got done showing what the VRAM wall looks like to another member:
http://www.tomshardware.com/reviews/radeon-hd-6990-antilles-crossfire,2878-13.html

Look at the comparison of adding AA vs. No AA (which does use large additional gobs of Memory) @ 2560x1600 resolutions.

True that not all people need or want AA, and it is subjective, the simple fact is, as you traverse different titles requiring more memory for eyecandy, DX11 lighting effects, or just textures, you enter the VRAM wall limit which will force you to adjust settings lower to compensate for the abysmal performance. The effects are not simply locking your max frame rate, but chocking the performance of the card to 30~50% of what its capable of. This can lead to unplayable frame rates.

I personally have come very close to seeing this issue such as with GTA4 and DA2 on a simple 1080p monitor with 8xAA. Dragon Age 2 has hit me upwards of 1400MB. Don't be so quick to dismiss people that caution users on what they may expect.

What you may see from a single card is a frame rate of 20fps, and two cards around 45fps, and then three cards taking you above 60+ fps with some dipping. Once you have hit the VRAM wall though, the performance increase will be negligible as you still only have 1.5GB of VRAM at your disposal.
Edited by RagingCain - 4/8/11 at 2:36pm
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post #32 of 42
A single GTX 580 3GB is enough.
Actually, 2 GTX 570's will be enough horsepower.

If you start venturing towards triple IPS (1600Px3) territory, then I'd recommend dual GTX 580 3GB minimum. (possibly 3)

smile.gif

Late ninja edit: 1.5gb 580 is probably enough until you start cranking up the aa.
Edited by Mongol - 4/8/11 at 7:10pm
post #33 of 42
@ Booty and @ Raging

I hear you guys and I understand that VRAM limitations are a real issue, as I too have experienced it myself so I am very familiar with it. And in re-reading the post where the OP asked if he should look at Tri-SLI GTX 580's, it should have been a big hint that money is not a problem. So I apologize for jumping the gun a bit. tongue.gif
     
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post #34 of 42
my single gtx 480 is not enough for dell u3011 2650 x 1600?
Do i need single gtx 580 3gb or 6950 2gb?

How about 5870 2gb version?
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post #35 of 42
Quote:
Originally Posted by covertash;13055492 
@ Booty and @ Raging

I hear you guys and I understand that VRAM limitations are a real issue, as I too have experienced it myself so I am very familiar with it. And in re-reading the post where the OP asked if he should look at Tri-SLI GTX 580's, it should have been a big hint that money is not a problem. So I apologize for jumping the gun a bit. tongue.gif

You are fine, you brought up really good points.

My favorite saying goes:
Even a broken clock is right at least twice a day.

You are not the broken clock, but those that immediately jump on the "VRAM LIMITATION OMGZORZ NVIDIA FIAIAIAIALED!!1!"

To be honest, despite the ATi/AMD competition fairing quite well at the higher resolution, the comparable before and after VRAM limitation being met on the nVidia is still not impressive to me at all.
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post #36 of 42
Quote:
Originally Posted by juano;13044813 
Like I said before 1080p is about 2 million pixels, 1600 is about 4 million pixels. Therefore a frame buffer of 1.5GB at 1600 would be similar to running a 768MB frame buffer at 1080 or in other words not ideal at all. Also I have seen about 1187Mb of my 1.25GB used up in Starcraft 2... at 1080p.

FYI, i'm running 768 MB frame bufffer at 1080p and there is no lag or hitch in my crysis maxed out experience wink.gif
and yes, when u have more RAm, of course the program will use it. unused ram is wasted ram. but when you don't have the ram, the program will scale down.
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post #37 of 42
Quote:
Originally Posted by Booty Warrior;13046298 
Yeah, don't listen to people who actually play above 1080p... that's some really good advice.

If you notice, the chart you linked is Crysis on GAMER with only 2xAA. That is not "maxing" anything. Try Crysis on Enthusiast with 4xAA at 1600p with only 1.5G VRAM. I guarantee you'll find a choke point.


I'm using one 1440p panel. This was my VRAM usage from a few hours of playing DA2 with 4xAA.

203744d1301901305-does-da2-have-memory-leak-1551mbda2.png

um, if you don't mind scrolling down, there's a chart with crysis on enthusiast with 2xAA. fps is already at 44 by then, so enabling higher AA is useless.
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post #38 of 42
Quote:
Originally Posted by covertash;13055492 
@ Booty and @ Raging

I hear you guys and I understand that VRAM limitations are a real issue, as I too have experienced it myself so I am very familiar with it. And in re-reading the post where the OP asked if he should look at Tri-SLI GTX 580's, it should have been a big hint that money is not a problem. So I apologize for jumping the gun a bit. tongue.gif

NP, you did have some good points, and made them without flaming (something a lot of people on these boards fail to do). biggrin.gif
Quote:
Originally Posted by james8;13055559 
um, if you don't mind scrolling down, there's a chart with crysis on enthusiast with 2xAA. fps is already at 44 by then, so enabling higher AA is useless.
Going from 2xAA to 4xAA isn't going to wreck performance that badly unless you're against the frame buffer limit. These were stock clocked 580s as well. Even a moderate OC would produce better results.
Edited by Booty Warrior - 4/8/11 at 7:17pm
post #39 of 42
Quote:
Originally Posted by RagingCain;13055533 
...
You are not the broken clock, but those that immediately jump on the "VRAM LIMITATION OMGZORZ NVIDIA FIAIAIAIALED!!1!"
...

I'm not saying this was directed at me but if it was then I want to say that I stand by the recommendation that I made to the OP and I did not make my recommendation lightly or just based on wanting to throw away the OP's money. I read the OP's needs that he listed in his post and made what was the best recommendation I could according to my knowledge of the matter, and it would be the decision I would make myself if I were in the same situation as the OP. This is evidenced by me buying a card with 1.25GB when apparently according to some in this thread I should have gotten a 460 768MB for 1080p.
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post #40 of 42
Quote:
Originally Posted by juano;13055967 
I'm not saying this was directed at me but if it was then I want to say that I stand by the recommendation that I made to the OP and I did not make my recommendation lightly or just based on wanting to throw away the OP's money. I read the OP's needs that he listed in his post and made what was the best recommendation I could according to my knowledge of the matter, and it would be the decision I would make myself if I were in the same situation as the OP. This is evidenced by me buying a card with 1.25GB when apparently according to some in this thread I should have gotten a 460 768MB for 1080p.

Not directed at you in the slightest.

VRAM is just another issue that has cropped up due to higher than 1080 res, and multi-monitors.

In the past you could get away with 768 MB, because multi-monitor was still a emerging in popularity, and 2560x1600 monitors are not cheap. I myself have pushed 1400MB in DA2 at just 1920x1080 so its definitely capable of being met in my eyes.

The cheapest in relation to performance, would be to CrossfireX 6970s or TriFireX 6970 at this level of resolution. Simply put, the VRAM, the GPUs power, and the price.
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