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How does SLI work? - Page 4

post #31 of 51
Quote:
Originally Posted by saypeeps View Post

Other note: WHY DID BEST BUY STOP SELLING SLI BRIDGES! doh.gif

I never knew they did sell them...
    
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post #32 of 51
Quote:
Originally Posted by saypeeps View Post

Thank you for this! biggrin.gif I always wanted to see how sli cards compared to high end cards, and now I can do it whenever. smile.gif
Right! I started thinking "Well, I think games that are hard on the GPU will most likely use SLI and games that don't use SLI will probably not need SLI to work as smooth as it can be." Thank you for confirming my thoughts and for that website! smile.gif
Thanks for the input all! heart.gif I'm off to go buy an SLI bridge! biggrin.gif
Other note: WHY DID BEST BUY STOP SELLING SLI BRIDGES! doh.gif

Sure!
There are always going to be anomalies when it comes to which games support SLI, but if the title is big enough you can bet it will work and if it doesn't right away, they are most likely working on it.

I couldn't tell you where you can get an SLI bridge other than Newegg or another online computer store. Newegg surely has them but you'l be waiting at least 3-4 days.
post #33 of 51
I just read through this whole thread, lots of interesting information.

I have another question though: how does SLI/Crossfire work with a single monitor? Do you just plug the monitor into one of the cards and magic happens? And don't some monitors use 2 DVI inputs to increase bandwidth? How does that work?
And then how does all this work with multi-monitor setups?
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post #34 of 51
Quote:
Originally Posted by MME1122 View Post

I just read through this whole thread, lots of interesting information.
I have another question though: how does SLI/Crossfire work with a single monitor? Do you just plug the monitor into one of the cards and magic happens? And don't some monitors use 2 DVI inputs to increase bandwidth? How does that work?
And then how does all this work with multi-monitor setups?

When you use SLI/CF, you connect your single monitor to one of the cards, indeed. I haven't heard about monitors that require two DVI inputs though.
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post #35 of 51
Quote:
Originally Posted by -X3- View Post

When you use SLI/CF, you connect your single monitor to one of the cards, indeed. I haven't heard about monitors that require two DVI inputs though.

They do exist, but a dual-link DVI port will do the same thing these days. They were around before digital dual-link was available, typically used for high end professional monitors that had higher resolutions, or faster refresh rates. I've seen a few that could take up to four single-link DVI connectors to achieve the best refresh rate at its max resolution.


Also of note, SLI will allow you to connect your monitors to any card you wish in the setup (ex, 3 cards with 3 screens you can plug one into each). CF requires all monitors to be plugged into the "primary" which can become a hassle, this is why you see CF eyefinity users talking about active DP adapters.
post #36 of 51
Quote:
Originally Posted by -X3- View Post

When you use SLI/CF, you connect your single monitor to one of the cards, indeed. I haven't heard about monitors that require two DVI inputs though.

I'd heard of dual-link DVI and just assumed you had two DVI connectors. Apparently it's a normal DVI with more pins...my bad tongue.gif

So how about multi-monitor setups? Do you connect everything to the same card or do you connect some monitors to one and some to the other? does it matter which ones you connect where?
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post #37 of 51
Quote:
Originally Posted by tompsonn View Post

Ah crap, I could have sworn I saw split-frame rendering option in the NVIDIA control panel! tongue.gif
1aae89d8_vbattach85287.jpeg
I liked that RAID 1 analogy though smile.gif

How old is that picture? It's not there anymore (I don't have it) and hasn't been there for a long time AFAIK wink.gif

I should've been more clear ... it's not that SLI can't do SFR, it's that it doesn't anymore.

Even if it's there, I rather doubt one would find that to be a preferable option. It's not a technology that neither ATI or nV has ever gotten to work all that well, and it's mostly abandoned at this point by both companies except I think AMD may still force it on some older games.

SFR does solve the microstutter issue, but it comes at a cost of getting like 50% or lower scaling ... which doesn't sell additional cards, so ...

Edit: and just to clarify ... there's basically no games coming out anymore that don't 'support SLI'. It's a very simple thing for the game engine maker to add the ability to support AFR, so they always do, and have for many years now.

However in order for SLI to work, the DRIVER version you have must support SLI (via a profile) for the particular game.

Basically, the list of games in NVCP that you can choose from (i.e. the ones in the dropdown under 'program settings') are the ones for which SLI will 'work' (although that can be manipulated somewhat via nVinspector or various 'tricks' like renaming the game .exe to one for which SLI is supported).

So what I'm saying is that whilst it's common to hear people talk about games 'supporting SLI', in reality, nowadays, they all do.

The real question is whether or not the version of the driver you're running has a SLI profile for a particular game.
Edited by brettjv - 2/5/12 at 11:06am
    
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post #38 of 51
Quote:
Originally Posted by brettjv View Post

How old is that picture? It's not there anymore (I don't have it) and hasn't been there for a long time AFAIK wink.gif
I should've been more clear ... it's not that SLI can't do SFR, it's that it doesn't anymore.
Even if it's there, I rather doubt one would find that to be a preferable option. It's not a technology that neither ATI or nV has ever gotten to work all that well, and it's mostly abandoned at this point by both companies except I think AMD may still force it on some older games.
SFR does solve the microstutter issue, but it comes at a cost of getting like 50% or lower scaling ... which doesn't sell additional cards, so ...
Edit: and just to clarify ... there's basically no games coming out anymore that don't 'support SLI'. It's a very simple thing for the game engine maker to add the ability to support AFR, so they always do, and have for many years now.
However in order for SLI to work, the DRIVER version you have must support SLI (via a profile) for the particular game.
Basically, the list of games in NVCP that you can choose from (i.e. the ones in the dropdown under 'program settings') are the ones for which SLI will 'work' (although that can be manipulated somewhat via nVinspector or various 'tricks' like renaming the game .exe to one for which SLI is supported).
So what I'm saying is that whilst it's common to hear people talk about games 'supporting SLI', in reality, nowadays, they all do.
The real question is whether or not the version of the driver you're running has a SLI profile for a particular game.

I'd say it is pretty old. I was actually being more of a smart ass rather than trying to prove a point tongue.gif
But yeah, for sure it is hardly a preferable option to AFR.
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post #39 of 51
If you already have a 460 throw another card in... they will have a fair lead of over a 580 at 1080p. However, if you plan on using higher resolutions you should get a card with more than one gb of vram.
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post #40 of 51
Quote:
Originally Posted by DzillaXx View Post

Actually with the current nvidia drivers I think you can sli ti with non ti. I know for a fact you can now sli a 8800gt with a 9800gt without any bios mods. really your limited by your slowest card.

I demand more info! tongue.gif Seriously i did some googling and found only a few reports of people doing this. Are there any other cards that can sli with the 9600GT. I have an 9600GT running 800/1200/1100 and if it could sli with say 9800 gt would be awesome.
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