Tri 580 sli VS Quad 590 sli

[snuuggles]

Im using with 1 1080p 3D TV . i want at least 60 fps per eye in 3d mode which means at least 120 fps in 2d. I know its overkill either way, but i don't want to cut it close

I am using a un55c7000 as my tv set. upgrading to un65d8000 when its out.

OP, I could be wrong, but are you thinking you are going to be outputting 120fps to this TV (eg, running at 120hz refresh)? From what I know in general, *no flatscreen TV* accepts a full 120hz source signal and displays it properly. And when I googled both those models, I couldn't find anything that told me that they would be different. I have a 2011 panasonic 3d plasma (tc-p42st30) that supposedly will *output* 120hz in 3d mode, but I haven't found a way to *feed* it 120hz input, it simply takes a 24hz or 60hz feed and multiplies the frames.

I'd be very interested if you have some positive experience that tells you otherwise (you've managed to set your current computer to 120hz refresh while hooked up to your current tv).

Anyways, assuming, as I suspect, your TV will not accept a true 120hz source feed, while the nvidia 3d vision will work with your tv, I think you will not need 3x or 4x(!) sli to achieve 48 fps. There are dozens (scores! hundreds? nah...) of people with more expertise than me on this site that could likely speak to this better, but I just wanted to caution you on assuming *anything* when you are talking about TV specs - the manufacturers are outright liers!

I hope this is helpful to you, please point me to any documentation or experience you've had that demonstrates that I'm in error, I'd *love8 to be wrong, I'd go buy one of those tvs myself for the 120hz input.

 

[johny2314jj]

my tv has 240hz refresh tho.. are you saying it wont properly display the high framerates i want?

 

[snuuggles]

my tv has 240hz refresh tho.. are you saying it wont properly display the high framerates i want?

Well, I really don't know how the 3d vision works on your kind of setup, but my understanding is that while:

1. your screen can and does refresh 120 (or in your case 240) times per second
-and-
2. the hdmi 1.4a port you have on your tv *could* accept 1080p@120hz

the tv manufacturers, in thier brilliance, have opted to *not bother to look for* higher than 60hz input. Presumably because none of the consumer electronics they care to be compatible with are capable of supplying that amount of data per second.

That is my interpretation of the situation anyways. I suspect what the 3d vision will do in your case is it will use "frame packing" to supply images to your tv.

It will send 2 *720p* images (left and right) together 60 times per second (but possibly 24 times per second, I'm really not sure). The TV will then split the frames up and show them sequentially, duplicating them the correct number of times so that they work with your 240hz tv.

After reading what I just wrote, I realise that if they do send 2 60 hz images, in a way, that *is* 120hz, but keep in mind that will be a 720p image, not 1080p. That is to say, about *half* the number of pixels of full 1080p@120hz

Ghaa, just thinking about it makes me angry, I truely wish I was wrong, maybe I am, but I really recommend poking around avsforum.com for specifics on your tv and how 3d vision will work with it.

Sorry, wish I could be more helpful, but I think the gpu setup you are looking at may be way overkill for what you need, so before you order, just be sure what that tv can take in.

I've been looking and looking for a lcd/plasma that will actually take 1080p@120hz, and I haven't found *anyone* who can confirm that there are any.

 

[johny2314jj]

ok, but i shouldnt worry about 60hz for 2d. ( playing games at 60fps in 2d on my set

 

[johny2314jj]

I did some digging and i found that it appears my tv and pc setup are more than capable to do 1080p@120Hz or even 240Hz, but the current HDMI 1.4a isn't.

 

[johny2314jj]

OK, I am going with 1 GTX 590 EVGA Classified, 1 i7 990z or 2600k Over clocked, 8 or 12GB 1600 Ram, 1 120GB to 160GB SSD, 1 2TB HDD, 1 DL Reader / Writer, 1 BD Reader / Writer, Coolmaster HAF-X, and the best mobo and psu for this setup. Also I want the system to run quite but I dont want water cooling. How should I do this? Cyberpowerpc? Custom Build?

 

[whosjohnny]

I actually do own a EVGA GTX 590 and it overclocks great on stock voltage and air. I pushed from 603mhz to 700mhz, memory at 1851mhz rock solid stable through Heavens 2.5 and 3DMark11 benchmarks. At idle, it got down to 29c lowest, max load for hours continuously overclocked to max, is 81c maximum temperature. My eye ball has never seen 82c or higher on my 590, air cooled.

So really, I don't know what you guys are talking about. I would definately get two 590 over 3x 580. Quad-SLI is just so damn cool. It ain't slow either. Drivers again would be more efficient, I trust nVidia.

Now, mind you - I'm not bashing TRI-580s. You are correct, they overclock great but I just not the type of guy who like the whole "brute force" type of style, I rather go with inherent subtle power of "not trying too hard" power. It's personal style.

Somewhere down the line, some developer is going to optimize Quad-SLI and assign task based on the 4 core GPUs. If that is actually happening, 2x 590 will beat 3x 580 - it all depends on software.

 

[Cookie Monster]

I remember reading how scaling on the quad SLi setups can sometimes be deceiving. How so? well because its average FPS isn't much higher than a 3 GPU setup. Apparently this is because theres a bottleneck when it comes to max framerate. However the supposed advantage of a 4 GPU setup is in the minimum FPS department and hence is more consistent even though its providing similiar avg FPS. Need to find that link, but just some food for thought.

Oh and people keep saying stay away from the GTX590 but I see no reason to be afraid of it. Its interesting to note that all the failed cards (6 in total) were from European reviewers (excluding xbitlabs who did OC/OV their GTX590) where most of them were from 2 sites Lab501(Romanian) and Sweclockers (Swedish) who blew theirs deliberately (the latter did just to film it).

Now the interesting thing is that reviewers from NA/Rest of the world had their cards not blow up. GTX590 users aren't seem to be complaining either nor do I see any reports from say EVGA forums about cards blowing up.

Ma 2 cents.

 

[LiuKangBakinPie]

Tri-SLI scaling is probably more consistent right now, not to mention two 590s are liable to catch on fire.

Indeed it is click on my sig

 

[LiuKangBakinPie]

Well, I really don't know how the 3d vision works on your kind of setup, but my understanding is that while:

1. your screen can and does refresh 120 (or in your case 240) times per second
-and-
2. the hdmi 1.4a port you have on your tv *could* accept 1080p@120hz

the tv manufacturers, in thier brilliance, have opted to *not bother to look for* higher than 60hz input. Presumably because none of the consumer electronics they care to be compatible with are capable of supplying that amount of data per second.

That is my interpretation of the situation anyways. I suspect what the 3d vision will do in your case is it will use "frame packing" to supply images to your tv.

It will send 2 *720p* images (left and right) together 60 times per second (but possibly 24 times per second, I'm really not sure). The TV will then split the frames up and show them sequentially, duplicating them the correct number of times so that they work with your 240hz tv.

After reading what I just wrote, I realise that if they do send 2 60 hz images, in a way, that *is* 120hz, but keep in mind that will be a 720p image, not 1080p. That is to say, about *half* the number of pixels of full 1080p@120hz

Ghaa, just thinking about it makes me angry, I truely wish I was wrong, maybe I am, but I really recommend poking around avsforum.com for specifics on your tv and how 3d vision will work with it.

Sorry, wish I could be more helpful, but I think the gpu setup you are looking at may be way overkill for what you need, so before you order, just be sure what that tv can take in.

I've been looking and looking for a lcd/plasma that will actually take 1080p@120hz, and I haven't found *anyone* who can confirm that there are any.

t's all down to the power of liquid crystal displays, or LCD. Just like the liquid crystal in a watch can be changed from transparent to black, the lenses of PC 3-D glasses can be transparent or opaque. In other words, the glasses can control which eye sees the image on the screen, and with careful timing you've got perfect 3-D. Here's how it happens:

The images are prepared by the computer and displayed.
Two images are generated, representing the views seen by each eye:

Both of these views are presented on the screen in rapid sequence:

While the left view is presented, the right eye is blocked by the LCD glasses. Similarly, when the right view is presented, the left eye is blocked.

All of this happens so quickly that the brain is entirely unaware of the two images merging together into a stereoscopic view. This is the same thing as when we watch a film using an old film projector and the sequence of still images flickering onto the screen merges together to form a movie.
http://computer.howstuffworks.com/3d-pc-glasses.htm