3D Vision and vram size, 1GB vs 2GB

[shepardh]

Hey,

I am going to buy my new computer in a week, and already set my mind on a GTX 560 in SLI.

Was planning in getting 2 of Gigabyte's SOC edition, however I just saw that Palit came out with a 2GB edition.

As far as I know, SLI only use 1GB of vram (when you have two 1gb cards)

Will I benefit from having 2X 2GB cards while in 3D vision mode ?

Planning on running 3D vision (not surround) on 1920x1080 with max detail levels.

 

[ViRGE]

Nothing I've ever seen indicates that 3D Vision is memory-intensive. Really all it requires is double the rendering power of 2D, since you have to render 2 perspectives of every frame.

 

[Annisman*]

I beleive Virge is correct, in fact, it might even be said that VRam takes a backseat to overall gpu clock speeds/raw horsepower of the card, because 3D vision is totally reliant on just cranking out as many frames as possible, because it has to do twice the work for a playable experience.

I've owned a 3D setup w/ GTX 570SLI, btw.

Now...with that being said, if you have ANY thought about doing Nvidia surround in the future, it will be quite worth it to get the extra Vram, and save yourself the hassle of doing later.

 

[Ben90]

I have a question on how 3D Vision renders. Does it render the exact same scene twice from different angles, or does it just do continuous rendering alternating eyes?

From my experience, if it renders the same scene twice adding VRAM will be completely unnecessary as not too much extra needs to be pulled from RAM.


......Wow, I just had a page typed up on the horrors that could come from the second scenario, then decided to check if Fallout 3 works in 3D. Sure enough it does, and since that game is internally capped at 60fps, its safe to assume the first scenario is what happens.

 

[SolMiester]

I was curious about this also....I believed 3D vision was a great feature of the 560Ti card and had to dodge Red Team flake regarding eyefinity and 3d vision....
It appears Virge is correct, Eyefinity\Surround has more textures to produce, where 3D Vision just renders the texture twice from difference perspective...

Heres some benchies on a stock 560Ti w\ a stock X6 CPU @2.8 so plenty of room for improvement
http://3dvision-blog.com/the-new-geforce-gtx-560-ti-is-great-for-budget-stereo-3d-gaming/#more-4399

 

[Skurge]

I was curious about this also....I believed 3D vision was a great feature of the 560Ti card and had to dodge Red Team flake regarding eyefinity and 3d vision....
It appears Virge is correct, Eyefinity\Surround has more textures to produce, where 3D Vision just renders the texture twice from difference perspective...

Heres some benchies on a stock 560Ti w\ a stock X6 CPU @2.8 so plenty of room for improvement
http://3dvision-blog.com/the-new-geforce-gtx-560-ti-is-great-for-budget-stereo-3d-gaming/#more-4399

Im not sure I understand what he means by "FPS per eye"

 

[SolMiester]

Im not sure I understand what he means by "FPS per eye"

Just that the rendering is done twice, once for each eye to give the illusion of 3D, therefore FPS per eye = Total FPS

 

[happy medium]

Planning on running 3D vision (not surround) on 1920x1080 with max detail levels.

For this I'd grab 2 Galaxy gtx570's for 630$ AR. 2 gtx560 SOC are gonna cost you 550$. I'd spend the extra 80$ for better 3d performance and the extra bit of ram. Remember the gtx570's overclock well too.

http://www.newegg.com/Product/Produc...-070-_-Product

 

[SolMiester]

For this I'd grab 2 Galaxy gtx570's for 630$ AR. 2 gtx560 SOC are gonna cost you 550$. I'd spend the extra 80$ for better 3d performance and the extra bit of ram. Remember the gtx570's overclock well too.

http://www.newegg.com/Product/Produc...-070-_-Product

?? - what, why?, 560ti is amble as shown in the benchies, if anything more required, perhaps 1 x 570, SLI not required

 

[happy medium]

?? - what, why?, 560ti is amble as shown in the benchies, if anything more required, perhaps 1 x 570, SLI not required

If hes gonna spend 550$, I'd just go the extra mile and get the extra ram and the gtx570 for 80$ more. Nothing really wrong with the sli'd gtx560's choice but do remember you fps will be cut in half with 3d vision and the guy did say "max details".

 

[SolMiester]

If hes gonna spend 550$, I'd just go the extra mile and get the extra ram and the gtx570 for 80$ more. Nothing really wrong with the sli'd gtx560's choice but do remember you fps will be cut in half with 3d vision and the guy did say "max details".

He doesnt need 560SLI for 3d vision, i have already shown benchies of stock 560 w\ 2.8ghz AMD cpu!

 

[happy medium]

He doesnt need 560SLI for 3d vision, i have already shown benchies of stock 560 w\ 2.8ghz AMD cpu!

Watch this video , what do you think?

gtx460= crap
gtx 560= crap
gtx560 in sli = good but the framerate was all over the place and he recommends the gtx580 "for the best gamming experience"
Mabe the benchmarks are only tellling half the story.?

http://www.linustechtips.com/ltt-vi...560-ti-3d-vision-benchmarks-linus-tech-tips-2

 

[blanketyblank]

I'm a little confused about something. 3d Vision requires a 120 Hz monitor right?
If so why is it you only need 30 fps for each eye? If so shouldn't a 60Hz monitor work just as well?

 

[SolMiester]

Watch this video , what do you think?

gtx460= crap
gtx 560= crap
gtx560 in sli = good but the framerate was all over the place and he recommends the gtx580 "for the best gamming experience"
Mabe the benchmarks are only tellling half the story.?

http://www.linustechtips.com/ltt-vi...560-ti-3d-vision-benchmarks-linus-tech-tips-2

Hmmm, he did some very tough games there, Lost planet and BF:BC2 are not gentle on NV hardware at the best of times....interestingly he said 36 is okay and when you look at the other benchies I showed, they are mostly well over 40 FPS per eye....I guess it comes down to the games once again. There much be some leeway as he was using 4aa & 8af...what was the clocks on the 560?

 

[SolMiester]

I'm a little confused about something. 3d Vision requires a 120 Hz monitor right?
If so why is it you only need 30 fps for each eye? If so shouldn't a 60Hz monitor work just as well?

30 FPS for each eye for smooth game play!

 

[happy medium]

what was the clocks on the 560?

880 core.

here is something to ponder, mabe you get twice the micro stutter with 3d and sli?
he said while in normal gamming the gtx560's wooped the gtx580's a$$, gamming with 3d with sli'd 560's the framerate was jumping all over the place.

Could be 2 things.
1. drivers
2. bad microstutter with 3d and sli combined.

Mabe both?

 

[shepardh]

first of all, thank you all for your opinions.

I do not live at the U.S, so the difference here between the 900mhz ver of the gtx 560 and the cheapest 570 is actually 130$ for each card, making it a total of extra 260$ for 2 X GTX 570 in SLI (no way I'm paying that).


The price of 2 X GTX 560 is actually the same as 1 X GTX 580.

http://www.linustechtips.com/ltt-vi...560-ti-3d-vision-benchmarks-linus-tech-tips-2


after seeing that, I wonder...did he specify some place else what were the dips? , because he said "slightly".

Also, I'll be pretty disappointed if I purchase 1 GTX 580 and then find out the dips were a result of a driver issue.

 

[WelshBloke]

I'm a little confused about something. 3d Vision requires a 120 Hz monitor right?
If so why is it you only need 30 fps for each eye? If so shouldn't a 60Hz monitor work just as well?

FPS arent the same thing as refresh rate.

A refresh rate of 30 FPS is going to give you a massive headache really quickly.

An in game FPS of 30 is just a bit sucky.

 

[DimmyK]

Hey,

I am going to buy my new computer in a week, and already set my mind on a GTX 560 in SLI.

Was planning in getting 2 of Gigabyte's SOC edition, however I just saw that Palit came out with a 2GB edition.

As far as I know, SLI only use 1GB of vram (when you have two 1gb cards)

Will I benefit from having 2X 2GB cards while in 3D vision mode ?

Planning on running 3D vision (not surround) on 1920x1080 with max detail levels.

No, you will not. 3D or not, mem usage is the same.

Left - 3D ON, right - 3D OFF

 

[badb0y]

"I ran all of them in 1920×1080 resolution in stereoscopic 3D mode with high level of details and no Anti-Aliasing enabled in order to see if all of them will be playable. Have in mind that when in stereo 3D mode you need to have at least 25 frames per eye or total of 50 frames per second in order to get a decent experience in a game."

I am pretty sure most people here crank that setting. I would go for a GTX 570+ if I was doing 3D. It is, in my basic understanding of the subject, rendering everything twice or something like that. I may be entirely off but I think I am right. I will research some more and get back to this topic.

 

[Annisman*]

As some one who has used Nvidia 3D with a GTX 460 SLI setup, and a GTX 570 SLI setup, the second option is far superior. However even GTX 570 SLI will struggle with certain titles.