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post #11 of 26
I'm getting my 3D Kit in two days. Is a huge number of AA (8X and up) really all that necessary in 3D mode? Have you guys seen a big difference with it on or off? I've heard with 3D on it gives its own AA effect.
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post #12 of 26
Quote:
Originally Posted by Defoler View Post
This question has been asked several times.

3D doesn't care about if you are using SLI. As long as you deliver the 120 fps it doesn't care if they come by ship, boat, on a donkey's back or zomie army. Doesn't matter at all.

3D doesn't need more vram. It just needs that you reach the 120 fps with the settings you are using (textures, DX level, AA and so on) in order to be smooth.

For a single monitor, a 560 SLI is just fine. It will be stronger and the extra vram of the 580 vs extra power of the SLI cards, means they will still be better.

Also your sig rig, its better to use the forum under http://www.overclock.net/specs.php to make it more readable.
This is false, you do not need your FPS to be 120 or higher for the 3d experience to work. It will work so long as you have the right gear no matter what FPS your video card is putting out.

For most games you simply cut your FPS in half because the same thing needs to be rendered twice (once for each eye). No matter if you have SLI or a single GPU, your FPS will be cut in half.
    
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post #13 of 26
Quote:
Originally Posted by LivingChampion View Post
I'm getting my 3D Kit in two days. Is a huge number of AA (8X and up) really all that necessary in 3D mode? Have you guys seen a big difference with it on or off? I've heard with 3D on it gives its own AA effect.
When you play in 3D, you are essentially doubling the resolution. Lets say you are playing in 1080 x 1920. If you play in that res in 3D then you each eye is seeing a different 1080 x 1920 image and then meshing them, making the total resolution higher. You should need less AA on during 3D, not more.
    
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post #14 of 26
Thread Starter 
Quote:
Originally Posted by Kirby1 View Post
When you play in 3D, you are essentially doubling the resolution. Lets say you are playing in 1080 x 1920. If you play in that res in 3D then you each eye is seeing a different 1080 x 1920 image and then meshing them, making the total resolution higher. You should need less AA on during 3D, not more.
I'm not quite sure that it works like that. For one thing, while there's an increase in framebuffer use, it's certainly not the same increase you'd see were you two actually run a game across 1080px2 somehow. Second, you'd be seeing an obvious increase in visual fidelity, which definitely doesn't happen. The image quality looks the same, except dimmer and with depth, as far as I can tell.
Edited by matrices - 5/1/11 at 6:49pm
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post #15 of 26
Quote:
Originally Posted by matrices View Post
I'm not quite sure that it works like that. For one thing, while there's an increase in framebuffer use, it's certainly not the same increase you'd see were you two actually run a game across 1080px2 somehow. Second, you'd be seeing an obvious increase in visual fidelity, which definitely doesn't happen. The image looks the same, except with depth and dimmer, as far as I can tell.
I have used 3D vision and it definitely is sharper in terms of AA. I speak from experience. It certainly does double the amount of resolution and work load that the video card puts out but it may not equate to exactly double the res on your eyes, but either way you definitely need less AA, not more.

The image does not look the same, its much sharper.
    
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post #16 of 26
I have a 3D Vision kit, and I can tell you right now that 3D does use more VRAM than 2D. I actually noticed that when I did some benchmark runs in Batman: AA in my Physx thread below. Just check where I posted the 3D stats on Batman in the OP for the link to the post. Actually you won't have to look for the post - it's here.
Edited by TheRockMonsi - 5/1/11 at 6:54pm
 
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post #17 of 26
Quote:
Originally Posted by TheRockMonsi View Post
I have a 3D Vision kit, and I can tell you right now that 3D does use more VRAM than 2D. I actually noticed that when I did some benchmark runs in Batman: AA in my Physx thread below. Just check where I posted the 3D stats on Batman in the OP for the link to the post. Actually you won't have to look for the post - it's here.
Nice benchmark. When I first started Batman:AA in 3D, with all settings maxed at 1080p, vram usage was reaching up to 1500MB. That was uncomfortably high for me. After lowering AA to 8x, vram usage dropped to 1300MB.

The only other game in which I ever exceeded 1500MB is Just Case 2 (with all settings maxed).

I wish people would quit saying "3D vision halves frame rates". That's not entirely true. Essentially, it doubles the gpu load. cpu load seems the same to me.

With my i3 530 @ 4GHz+, I may see 60-90fps in 2D games. With 3D vision on, fps drops to 60 or less. Clearly, I have a cpu bottleneck in 2D, but usually not in 3D.

mafia 2, with all settings maxed at 1080p (except ambient occlusion off since I dislike its appearance in 3D) runs at 30-45fps in game (not the benchmark). It's a very smooth and playable 30-45fps. No stuttering. Nothing for me to complain about.

I actually prefer a slight cpu bottleneck because I dont like my gpu to constantly run at 100% due to fan noise and heat. Although, with 3D vision on, my gpu usage is often at 99%. I am considering buying another GTX 580 because one GTX 580 is not quite enough for 3D vision at 1080p.
     
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post #18 of 26
Quote:
Originally Posted by Kirby1 View Post
This is false, you do not need your FPS to be 120 or higher for the 3d experience to work. It will work so long as you have the right gear no matter what FPS your video card is putting out.

For most games you simply cut your FPS in half because the same thing needs to be rendered twice (once for each eye). No matter if you have SLI or a single GPU, your FPS will be cut in half.
This is not "false". How about you read again?

Quote:
3D doesn't need more vram. It just needs that you reach the 120 fps with the settings you are using (textures, DX level, AA and so on) in order to be smooth.
You are welcome to play in 3D mode at 30 FPS, and let me know if you don't stop playing after 10 minutes becase of a head-ache.
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post #19 of 26
Quote:
Originally Posted by Defoler View Post
This is not "false". How about you read again?
You're statements were not entirely false. But some statements were unclear or incorrect.

Quote:
Originally Posted by Defoler View Post
As long as you deliver the 120 fps it doesn't care if they come by ship, boat, on a donkey's back or zomie army. Doesn't matter at all.

3D doesn't need more vram. It just needs that you reach the 120 fps with the settings you are using (textures, DX level, AA and so on) in order to be smooth.

For a single monitor, a 560 SLI is just fine. It will be stronger and the extra vram of the 580 vs extra power of the SLI cards, means they will still be better.
Who is "you" deliver? cpu? gpu?

cpu can not deliver 120fps with 3D vision on. The cpu can only "deliver" up to 60fps with 3D vision on. More than 60fps from the cpu is overkill with 3D vision on (v-sync on).

With 3D vision on, the gpu can deliver up to 120fps (60 left eye + 60 right eye) to the monitors but not more since v-sync is on.

3D vision does increase vram usage compared to 2D. This is well known. Disable 3D vision in the nvidia control panel and recheck 2D vram usage.

560 SLI is fine, until 1GB vram usage is exceeded, which can happen when Antialiasing is on in Batman:AA at 1080p. At 720p, 1GB vram should be no problem, but that's only a guess. I never play games at 720p.

mafia 2 plays smooth on my system at 30-45fps with 3D vision on. no visible stuttering. not choppy. no headache. If I did not monitor fps on screen with Afterburner, I would not even know that fps was below 60.

Metro2033 in dx11 max settings at 1080p (3D vision on) is sometimes less than 30fps on my system. It is sometimes not smooth.

I set low depth + high convergence to avoid headaches. high depth = headache for me.
     
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post #20 of 26
I'm quite happy with my single GTX 560Ti for 3D at 1920x1080. F1 2010 runs at a comfortable 35fps in 3D, and I've never had a headache while using the glasses (not even with Metro 2033 which runs at 20fps unless I lower the settings).

AA is not as important in 3D mode because the jaggies will not be in the same spot for each eye and are therefore much less noticeable, especially at 1080p.
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