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Thread: SLI'ing on GIGABYTE GA-X58A-UD3R




  1. #21
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    Thanks again wazza, you are unbelievably helpful and a true gentleman.

    Also, to get this SLI to work, I had to hook up two bridges, one of my friends said he does it for SLI'ing all 400 series (1 bridge on each connector). And he happened to have the exact mobo as mine, and gave me his bridge :)

  2. #22
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    Quote Originally Posted by bigblack25 View Post
    Thanks again wazza, you are unbelievably helpful and a true gentleman.

    Also, to get this SLI to work, I had to hook up two bridges, one of my friends said he does it for SLI'ing all 400 series (1 bridge on each connector). And he happened to have the exact mobo as mine, and gave me his bridge :)
    I called EVGA to make sure it was safe, and they assured me it was. And said it was a good idea!

  3. #23
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    dont the cards come with one sli bridge? like ati cards come with one xfire bridge

    and why doesnt gigabyte include ati xfire bridges with their mb's? seeing that they support both ati nvidia? perhaps nvidia bunged them a wad of money?
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  4. #24
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    The cards do not come with bridges. Which is BS if you ask me. The only SLI Bridges i've ever recieved bundled with ANYTHING, were through SLI capable motherboards. Way back to 7xxx series Nvidia. As for ATI, I only have owned one card back in 2000 or 2001, when I built an AMD thunderbird 1Ghz box.

  5. #25
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    To be perfectly honest, there is zero need for two bridges and almost (ALMOST) no need for any at all. The bridges only transfer a tiny amount of info unless you're running huge resolutions or severely limited PCIE bandwidth, ie PCIe 1.0. x16, 8x/8x SLI and 8x/4x SLI.

    I ca say with 100% confidence that the EVGA customer support you spoke to that thought two bridges was a good idea is utterly clueless. It won't do any harm but it certainly won't do any good either. If it were needed then your board would have come with two connectors.

    The second connector on the 480 is for connecting card 3. In a three way SLI setup the only card that will have two connectors plugged in is the middle card because it's connected to card 1 and card 3.

    The reasons that NVidia bridges come with the board and Crossfire with the card are numerous. Firstly, Crossfire used to work using a special Master card and Slave card without internal bridges, using a dongle instead. The first ATI card to use internal bridges was the 1900Pro. The bridge needed was included with the card because there was no other way of getting one to the consumer. They already had (maybe) a crossfire capable board that was made and packaged before ATI thought about ditching dongles.

    NVidia on the other hand has always used bridges, either solid or flexible. Flexible bridges are usually reserved for pairs of cards where a single flexible one is able to span a variety of different size gaps depending on how far apart each PCIe slot is. The three way and four way bridges are solid and need to be matched to the motherboard layout. There are several configurations and the board maker simply includes the correct one. Why bundle the 2 way connector with the card and the three way with the board? Pointless, stick them both in the box with the board.

    As for there being any financial gain, that's not the case, in fact the complete oposite is true.....

    Imagine for a second 100 people who have bought a new graphics card. Lets pretend that 50 bought an ATI card and 50 bought an NVidia card. Out of that 50 that bought NVidia cards, 15 had bought two and will be using SLI. Also assuming that all 100 people have a board capable of both SLI and Crossfire, and all of them have a bridge for SLI in their board box, that's 85 SLI bridges that are never going to be used. If the bridges had come with the cards, there would only be 35 wasted bridges.

    I must point out that you do also have to factor in that of the 15 who bought a pair of cards, there would be a slight negative if NV switched to putting bridges in card boxes, because the second bridge for each of the 15 SLI'ers would also technically be a waste. That still makes only50 wasted bridges compared to 85 though.

    Main point really is that neither company can stop what they arwe doing now. If ATI switched and bundled them with boards, people with older boards buying new GPU's containing no bridges would be screwed and visa versa.
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  6. #26
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    yes i dont know why i said that but with ati bundling an xfire bridge with every card then theres no need to put them in the mb boxes like nvidia do,unless you happen to lose one then it might come in handy,and you need two bridges on ati cards but if your buying two cards for xfire then one bridge with each card will be all you need
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  7. #27
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    That's the point. You could also say it the other way around: "There's no need for NVidia to bundle a bridge with every GPU because there's one in the Motherboard box". Everyone buying two cards for SLI needs a SLI board, so there is no difference or inconvenience either way.

    Neither way is better or worse, it's just that they have to stick with how they have always distributed them (for the reasons in my last post) or people will definitely pe p155ed off. Fir NV it's essential they do it this way, like I said some boards have three PCIE slots with a single slot space, some the first 2 have double and the third a single etc, etc. Too many combinations. Just searching round, NV would have to include 1 flexible bridge and at least 3 different tri bridges WITH EACH CARD. That'd just be stupid.

    Again, like I said, neither company can change what they're doing, or they will receive massive complaints form NV owners buying motherboards that no longer contain bridges and accidentally getting old stock cards that also don't have bridges. Same with ATI purchasers that already have their CF board that didn't come with a bridge. If they grab a card and ATI have changed their mind, bundling bridges with boards, they will be without a bridge too.

    For clarification, Crossfire, like SLI only requires a single bridge. There is no gain from using two.

    The reason you end up with a pair of bridges in crossfire configs is that ATI are stuck with bundling one with each card. Being totally wasteless for ATI would mean either having to bundle a connector with motherboards (the most efficient way TBH) or going back to "Master" and "Slave" packages with the bridge being in the Master card box (identical HW, just one has a bridge). That wouldn't be desirable at all. ATI already waste a bridge for everyone who buys two cards for crossfire.
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  8. #28
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    Hi thee Guys

    I have a q here I have 3*470GTX trying to get them to run on a GigaByte X58-UD7 but only 2 run cant get the 3rd to run so I thought it might be the PSU so got me a 1500W thermaltake and still no joy have found that only up to 200 series is supported in the manual ?? but guessing the 400 should be too now PLEASE HELP ME, am at the stage of thinking of selling the 3rd one which I dont want as I only have the cards now for a couple of months now had them on the 780i board and loved it and thought a motherboard uprade would be a good idea for 3 way but now 780i is gone to another loving home and I have a x58 which is awesome but I WANT 3 WAY, regards and a Merry Christmas

  9. #29
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    are you using the latest bios for your mb?
    Gigabyte z77x UP4-TH F11c Modded Bios
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  10. #30
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    Default Re: SLI'ing on GIGABYTE GA-X58A-UD3R

    Hi there.

    I've got 3x580's and would like to 3-way sli them. The pc only picks up 2 of the 3 cards. The 580 at the bottom slot does not detect at all. I'm running the latest bios and I've used the card in all of the other slots and it works. I know the slot works as i used to run my raid card from that pci-e port without any problems.

    What can I do to fix this?
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