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3 Sli on 8800GT with P5n32-E n680i - With no Bridge connector? Possibl

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March 13, 2008 1:35:19 PM

3 Sli on 8800GT with P5n32-E n680i - With no Bridge connector? Possible?

I will have some 8800gt and would like to dish out 3 8800GT without the connectors.... as it is possible to install it... would it be detected as 3 Sli? :D 

:pt1cable:  :pt1cable: 
March 13, 2008 1:37:34 PM

Yes buy three cards... bridge two together and the third one can be placed in a nice parcel and sent to my home address.
March 13, 2008 1:40:36 PM

Well no one has ever tried it.... will likely wanna try it, unless anyone here has tried 1....
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March 13, 2008 1:59:24 PM

Nobodies ever tried it because they've more sense than money.
a b U Graphics card
March 13, 2008 2:31:35 PM

If you mean 3-way SLI, no not possible, you need the bridges and only the GTX and Ultra models support 3-way SLI.

I think it sucks since it would have been a good way to increment a system's power over time with lesser components... buy a 8800GTS now, add another in 6-9 months and another one 6-9 months later.... too bad.
March 13, 2008 3:25:00 PM

I still don't understand why Nvidia doesn't allow Tri-sli with 9600gt, 8800gt, 8800gts. . . Pretty ridiculous to make the minimum amount of money to use Tri-sli at around $1300 just for the graphics card, and how many people actually play at the extreme resoulutions that would actually see benefit from three GTX or Ultra cards?
a b U Graphics card
March 13, 2008 3:34:33 PM

It's not a software limitation, it's that no other card has the required 2nd SLI connector on top.
March 13, 2008 5:41:14 PM

It does work its been tried, you can use 3way sli but without any bridge you sure as hell wont notice a difference.
a b U Graphics card
March 13, 2008 5:55:47 PM

Probably because without the bridge, it's only considered 3 separate cards, not 3-way SLI.
a b U Graphics card
March 15, 2008 10:39:39 AM

I didn't say you couldn't plug 3 card, I just said that without the bridges, it will only be considered 3 separate cards; no performance improvements.
a b U Graphics card
March 15, 2008 12:11:42 PM

Hatman said:
It does work its been tried, you can use 3way sli but without any bridge you sure as hell wont notice a difference.


You can put as many cards on a motherboard as there are slots.
That does mean you end up in SLI though.
There are ONLY 2 video cards that will run in 3 way SLI.
8800GTX, 8800Ultra
It's pretty pointless anyway.....
http://www.anandtech.com/video/showdoc.aspx?i=3183

March 15, 2008 1:22:52 PM

The new 9800GTX will permit 3-way SLI.

It will not be much faster than a Super Clocked 8800GTS and the MSRP will be $299-$349.
March 15, 2008 2:50:00 PM

jitpublisher said:
You can put as many cards on a motherboard as there are slots.
That does mean you end up in SLI though.
There are ONLY 2 video cards that will run in 3 way SLI.
8800GTX, 8800Ultra
It's pretty pointless anyway.....
http://www.anandtech.com/video/showdoc.aspx?i=3183



You dont need the bridges to run SLI jsut the compnents and the drivers.


Anyway you miss the point with the new GTX itll run much cooler take a lot less power and scale much better. Tri-Sli ers dream.
a c 271 U Graphics card
March 15, 2008 3:26:48 PM

Hatman said:
You dont need the bridges to run SLI jsut the compnents and the drivers.

[:mousemonkey:2] Are you sure?, because my GT's will only run in Sli with the bridge in place.
a b U Graphics card
March 15, 2008 4:03:59 PM

I googled a bit trying to find something that would prove bridgeless SLI wasn't possible, but what I found was the opposite! The bridge seems to be used for extra communication bandwidth between the cards and nothing more. Without them, the communication has to go through the PCI-E bus.

I found a couple of articles on the subject: this one or this one (whole thread and/or the post by jpebcac).

Since going bidgeless has it's cost AND going from 2-way to 3-way gives a limited gain, I wouldn't be surprised if, in the end, 3-way bridgeless SLI would be about as fast at a bridged 2-way SLI.

As mythbusters would thay: myth plausible (from what I gathered so far).
a b U Graphics card
March 15, 2008 5:41:16 PM

Zenthar said:
I googled a bit trying to find something that would prove bridgeless SLI wasn't possible, but what I found was the opposite! The bridge seems to be used for extra communication bandwidth between the cards and nothing more. Without them, the communication has to go through the PCI-E bus.

I found a couple of articles on the subject: this one or this one (whole thread and/or the post by jpebcac).

Since going bidgeless has it's cost AND going from 2-way to 3-way gives a limited gain, I wouldn't be surprised if, in the end, 3-way bridgeless SLI would be about as fast at a bridged 2-way SLI.

As mythbusters would thay: myth plausible (from what I gathered so far).

That was my understanding although I never tried running it without the bridge.
a b U Graphics card
March 15, 2008 6:34:42 PM

Hatman said:
You dont need the bridges to run SLI jsut the compnents and the drivers.


Anyway you miss the point with the new GTX itll run much cooler take a lot less power and scale much better. Tri-Sli ers dream.


But I don't think the GTX's are even available yet, and when they are available, what price will they be, how will they scale when adding a 3rd card, (I don't think it will be any better than the 8800gtx, which proves that a 3rd card in SLI right now just barely does anything for performance. I could be wrong though. However, since you can't buy them yet, no one knows for sure.
March 15, 2008 10:32:28 PM

pauldh said:
That was my understanding although I never tried running it without the bridge.

Cards like 8400GS in SLI because of their low power means they dont really gain from the bridge and can be used in SLI with just the pci-e slots.


Tri-sli 8800GT is possible it just wont get anywhere.
March 16, 2008 2:03:59 AM

i believe you all are missing the Point, the point of the fact is you can SLI ONLY TWO 8800GT because of driver support and other things.

Yes you can "use" Three cards, non bridged, but it wouldnt be SLI nor would you see any performance increase, more then likely it will just read as others said regular SLI plus an extra card.

The whole point of this card was "can you SLI Three 8800GTs" and the answer is a big fat stinking NO, currently only 8800GTX's and Ultra's can run TRI-SLI
a b U Graphics card
March 16, 2008 2:42:35 AM

Here is a test of bridgeless SLI vs. bridged SLI. SLI does work without the bridge, but because it is forced to communicate over the PCI-e bus, framerates are slower. Note, it's still much better than one card.
http://www.hexus.net/content/item.php?item=6683&page=4
a b U Graphics card
March 16, 2008 2:44:18 AM

linsonchan said:
3 Sli on 8800GT with P5n32-E n680i - With no Bridge connector? Possible?

I will have some 8800gt and would like to dish out 3 8800GT without the connectors.... as it is possible to install it... would it be detected as 3 Sli? :D 

:pt1cable:  :pt1cable: 



If you can find the flexible SLI connectors like Asus has used for its standard SLI cards, you can do it. Hook the front connector of the bottom card to the back connector of the top card (or vice versa), then connect the two remaining top and bottom leads to the middle card.
March 16, 2008 2:55:15 AM

Crashman said:
If you can find the flexible SLI connectors like Asus has used for its standard SLI cards, you can do it. Hook the front connector of the bottom card to the back connector of the top card (or vice versa), then connect the two remaining top and bottom leads to the middle card.


One, that wouldnt work, because the 8800GT only has 1 SLI connector and with an SLI bridge you can only connect two cards....

what your suggesting is to connect two card with SLI bridges then connect those to another.. which u cant do because that card doesnt have 2 SLI links..
a b U Graphics card
March 16, 2008 3:25:47 AM

Xazax310 said:
One, that wouldnt work, because the 8800GT only has 1 SLI connector and with an SLI bridge you can only connect two cards....

what your suggesting is to connect two card with SLI bridges then connect those to another.. which u cant do because that card doesnt have 2 SLI links..


Right, I was thinking of the GTX. Sorry.
March 16, 2008 4:07:46 AM

I have an 8800GTX Tri SLi system with an nforce 780i board.

Without the 3-way bridge connector, the drivers will NOT allow you to select 3-way SLi.

With a single connector between any two cards, the drivers will NOT allow you to select 3-way SLi OR 2-way SLi.

With a single connector between two cards and the 3rd card removed, 2-way SLi of course works.

With no connectors and two cards in, bridgeless 2-way SLi is possible.

YOU WILL NEVER GET 3-WAY SLi WORKING WITH AN 8800GT, GTS, OR BELOW. EVER.

And you want to do this on a 680i board?! Are you insane? The third slot is only x8! The extra load from no SLi bridge would ruin any advantage of a 3rd card.
March 16, 2008 4:29:04 AM

What you could do is SLI 2 of them, and set the third to work as a physics card, i havent read any reviews from anyone doing this yet, but nvidia states it is possible, but heres the real question.....DUDE do you really have to overcomponsate that badly? Also 3 way sli has been proven to actually perform worse then a single card setup with certain games, so be wary. Honestly though, how much porn you looking at that you want 3 cards ??? lolol
a b U Graphics card
March 16, 2008 6:05:18 AM

darkstar782 said:
I have an 8800GTX Tri SLi system with an nforce 780i board.

Without the 3-way bridge connector, the drivers will NOT allow you to select 3-way SLi.

With a single connector between any two cards, the drivers will NOT allow you to select 3-way SLi OR 2-way SLi.

With a single connector between two cards and the 3rd card removed, 2-way SLi of course works.

With no connectors and two cards in, bridgeless 2-way SLi is possible.

YOU WILL NEVER GET 3-WAY SLi WORKING WITH AN 8800GT, GTS, OR BELOW. EVER.

And you want to do this on a 680i board?! Are you insane? The third slot is only x8! The extra load from no SLi bridge would ruin any advantage of a 3rd card.


Not to forget that 8800GTX owners can try 3-way SLI using three flexible bridges by bridging the center card to the top and bottom cards, then putting a third bridge across the remaining two SLI connectors of the top and bottom card. This does the same job as the special 3-way bridge, but makes it possible for 680i and 680i-LT owners to experiment with 3-way SLI on boards that didn't include the special bridge, simply by purchasing flexible bridges.
March 16, 2008 8:50:55 AM

blacksci said:
What you could do is SLI 2 of them, and set the third to work as a physics card, i havent read any reviews from anyone doing this yet, but nvidia states it is possible, but heres the real question.....DUDE do you really have to overcomponsate that badly? Also 3 way sli has been proven to actually perform worse then a single card setup with certain games, so be wary. Honestly though, how much porn you looking at that you want 3 cards ??? lolol



If you read properly you'd see that 2-way SLI isn't possible with current drivers with 3 cards in.

You have to remove a card to get it to work.

And yes, I do use it. I play games at 2560x1600. It is not wasted. I am quite capable of running in single card mode if a game requires it.
March 16, 2008 8:51:35 AM

Crashman said:
Not to forget that 8800GTX owners can try 3-way SLI using three flexible bridges by bridging the center card to the top and bottom cards, then putting a third bridge across the remaining two SLI connectors of the top and bottom card. This does the same job as the special 3-way bridge, but makes it possible for 680i and 680i-LT owners to experiment with 3-way SLI on boards that didn't include the special bridge, simply by purchasing flexible bridges.



Yeah I have a few flexible bridges and have tried it this way.
a b U Graphics card
March 16, 2008 3:24:45 PM

Look at the larges post in this thread. The guy claims that you can enable 3 way SLI with the 8800GT without the bridge. Totally unconfirmed if there is a performance boost, but it allowed him to enable it, at least with whatever driver he was using. He also states that with 3 8800GTX you can not enable SLI without the bridges.
http://www.evga.com/forums/tm.asp?m=195902

Anyway, nobody here has tried three 8800GT, so whether we each say yes or no, it's just a guess. If I had a mobo here with three slots I would try it myself with another 8800GT I ordered for someone.

What we can say with fairly good certainty, is whether it's possible or not, you'd be throwing away money for the third card as tri SLI bridgeless SLI would probably lose to two cards over a bridge. Also, 8X SLI is no problem with the bridge and performs basically as well as 16x, but without it I'd have to assume performance would suffer big time. I still think it may be possible, but even so not a sloution to persue apart from testing and confirming yeah or neah.
a b U Graphics card
March 16, 2008 3:49:21 PM

Someone just find the right ribbon cable end for the SLI connector and a ribbon cable with the same wire pitch, and I'll put together a single-wide 3-way SLI ribbon cable to see if it's just a limitation of bridges (or lack thereof).
March 16, 2008 3:55:23 PM

Would be interesting if bridgeless SLI improved with PCI-E2 over PCI-E1.
a b U Graphics card
March 16, 2008 4:31:49 PM

There is a lot of stuff that would be cool to test .... with other people's money. I wonder if we could do some kind of Mythbuster spin-off on some GeekChannel on TV or being affiliated with some site like TomsHardware :p .
March 17, 2008 12:56:46 AM

darkstar782 said:
If you read properly you'd see that 2-way SLI isn't possible with current drivers with 3 cards in.

You have to remove a card to get it to work.

And yes, I do use it. I play games at 2560x1600. It is not wasted. I am quite capable of running in single card mode if a game requires it.


Dont get your panties in a bunch, im just saying what Nvidia said themselves, and since they make the card, well i cant see them being wrong about there own product. And no im not going to blow the time trying to find that article again, i have a life.
March 17, 2008 1:20:38 AM

9800gt are able to go into trisli
March 17, 2008 2:23:56 AM

Even though the 8800gt doesn't have enough bridge connectors; couldn't somebody try it without the bridge (as mentioned before?) What I wanted to add to that previous thought was that there could be a 3rd party driver or however you say that that could support the 8800gt in tri-sli. If not; I'm sure that it would be possible to make a 3rd party driver to do this.
a b U Graphics card
March 17, 2008 12:19:33 PM

I'd like to test it or see it tested myself. But I'm not buying a new $200 mobo just to try it. ANyway, come on someone, give a a go for us. 8800GT are cheap now. :) 
March 18, 2008 6:06:20 AM

You would need a cracked driver.

The standard drivers will not do 3 way SLi without a bridge.

There have been no cracked drivers in a long time, not since XP/7900's peak. After there was a cracked driver released to allow SLi on Intel 975x, nVidia encrypted parts of their driver and made it clear they would prosecte anyone that cracked them.

It was discussed on tri-slis release (or was it nf 680i release...) that they would offer a 2 way sli+physics, but this has yet to happen. With nvidia's recent purchase of Ageia, maybe.

Blacksci, I originally had a single 8800GTX, then went to 2, then 3. While there is not a 100% improvement, for alot of things 3-way SLi has given me much better performance than my old 2-way SLi performance. Don't believe me if you like :) 
March 19, 2008 1:30:00 AM

Its not a matter of believing the performance diffrence, it is a matter of only a few games showing a diffrence, granted i dont play a ton of new games, i work for a living, but i have all the battlefield series, company of heroes, tf2 and a few more steam games, my card never drops below 80 fps, now if i played crysis, i prolly would consider the setup, but for most well written games out there these days, you hit a point of diminshing returns, and with a good videocard you wont be able to see the difference unless you love aa, and wish to run it. Sure you can have a fps of over a hundered, its well known the human eye doesnt see the difference after 90, and most people wouldnt even really care as long as they had a fps of 60. Just figured id throw that out, although in my original post and the following i never said anything about performance, i did about porn though...... personally i dont see how you can confuse the 2.
March 19, 2008 7:30:39 AM

Oh yes, I agree, FPS over about 60 is pointless.

But what resolution do you run in?

2560x1600 is nearly 4.1 megapixels.

1920x1200 is only 2.3 megapixels.

1650x1080 is 1.78

1440x900 is 1.3.

So, if you get 80 FPS at 1650x1080, you can expect around 34 at 2560x1600.

You have an 8800GTS 512, so thats about the same performance as 1 8800GTX.

If we assume a 100% performance bonus for a 200% increase in GPU horsepower, i.e. going to tri-SLi, that is enough to let me play the game you are playing at 1650x1080@80FPS, at 2560x1600@68FPS, which to me makes tri-SLi justified.
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