sli 580 with 770

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siaan312

siaan312

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so i have a 580 and i my cousin bought a 1060 and he gave me his old 770 to sli with my 580, and theres another thread about this exact sli but i was wondering if i already have the cards will it make my pc go faster? my psu is strong enough for it im pretty sure
 
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drbones8472
You cannot SLI cards from different series generations. You would have to have another 580 or 770 to SLI. SLI doesn't care about the brand of the card, or how much memory the card has, but it HAS to be from the same generation. Example 680+680=SLI 680+1050ti=No SLI
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drbones8472

drbones8472

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You cannot SLI cards from different series generations. You would have to have another 580 or 770 to SLI. SLI doesn't care about the brand of the card, or how much memory the card has, but it HAS to be from the same generation. Example 680+680=SLI 680+1050ti=No SLI
 
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jacobweaver800

jacobweaver800

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Your trying to SLI a GTX 580 with a GTX 770? Won't work. SLI will only work with the same exact card, so you can't mix and match cards, it has to be the same, so like 2 reference 1070's will sli but a 1060 from EVGA and a 1070 reference will not. Even though there both 10 series cards, this would only work in Crossfire, but there NVidia cars not AMD ones. Crossfire only needs two cards that are based on the same architecture, so a Hawaii core GPU will work with another Hawaii core GPU even if there different cards.
 
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jacobweaver800

jacobweaver800

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While SLI doesn't care about VRam it does still matter, if one card has 2gb's and the other has like 6, then both cards theoretically only have 2gb's. Since both cards need access to the same info to render the same data on one cards VRam is the exact same on the other, so in theory you would have a total of 8gb's in that config, but you would only have 2gb's usable.
 
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drbones8472

drbones8472

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Yes, I know Jacob. You don't have to explain it to me. Ive had an SLI setup in my PC since the days of the 400 series from Nvidia. And that whole, "It has to be the exact same card stuff you're spewing out, didn't start until the current generation of cards. :)
 
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jacobweaver800

jacobweaver800

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Interesting, I wish i could run SLI, lol JK. Id go crossfire.
 
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k1114

k1114

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Sli does care about vram. You cannot sli with different vram. You used to many years ago but that's a long time ago. https://forums.geforce.com/default/topic/469402/sli/faq-quot-will-these-two-cards-work-in-sli-quot-sli-what-works-with-what-/
 
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jacobweaver800

jacobweaver800

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Older cards and Crossfire don't care about VRam, but SLI with new cards, well it matters.
 
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k1114

k1114

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I don't need to point out where both of you said vram amount doesn't matter and now you say the opposite. But older cards still don't work. Maybe the legacy drivers do but maybe they did don't. They were updated for w10 so could have thrown in whatever changes they wanted. It's not common but you are free to buy legacy cards and try. Current drivers go back to 400 and are disabled on there. Those are going on 8 years so I would say they are older and still can't. You could find old drivers to do it, but is it really worth it and how far back do you need to go? Cf is a different story but going off topic a bit when he doesn't have amd.
 
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jacobweaver800

jacobweaver800

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I know he isn't using AMD, I was using it as a reference point.
 
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siaan312

siaan312

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but if i physically connect them with an sli bridge will it work...? will it do more good then bad? i already have both cards for free so idc if it upgrades my pc even by a tiny tiny tiny bit... will nividia experience see both and let me sli them in the thingy?
 
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k1114

k1114

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You cannot sli. A bridge doesn't change anything. You might as well be connecting an amd gpu. They could do things independently but they won't work together in a combined way. Except physx but that's mostly useless. For the most part, the other gpu will take power and do nothing else.
 
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jacobweaver800

jacobweaver800

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The option to set up SLI won't even appear if you have 2 different cards. SLI bridge or not. It will not work. And you won't see any benefit, in fact the second card will just sit at 0% usage and might actually slow your PC down, just use the 770 and put the 580 on the shelf.
 
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