Graphic Card SLI Question.

Prophet171 · Sep 11, 2014

My buddy wants to know and was asking me but i have no idea the answer. If he bought a GTX770 and wanted to use his other older video card im not sure what it is. It is older and pretty sure fairly slow. If he wanted to use it in the same build, would he be able to SLI it? If so would that possibly even damper or make perfomance of the graphics even worse having a slower older card with a faster new card?? And same thing if he didnt SLI it, if it was so old it didnt have an SLI bridge option then would it slow down the computer or graphics or new GTX770 at all performance wise by running the second one just in another slot? If i could get some detailed answers and possible suggestions it would be amazing. I have no clue what to tell him on this because i am no graphics expert so any advice or answers help. Thanks guys

Gam3r01 · Sep 11, 2014

You wont be able to SLI them, they have to be the same base card.
There are a few options there, you can run the old card as a dedicated Physx card (which isnt the most necessary) or have it dedicated to its own monitor.

Prophet171 · Sep 11, 2014

Okay i see, wont be able to SLI them good to know. So if he just ran 1 monitor lets say from his GTX770, and stuck his old pos card in the build also he is wondering if that would give it a little boost? I said i thought it would actually maybe alter and damper the performance of the good card but i have no idea.

Cons29 · Sep 11, 2014

also, depends on how "slow" the card is. low end gpu's cannot be sli'd, and even if it is... it's just too slow
a good place to start sli, is in mid range

Gam3r01 · Sep 11, 2014

It wont hamper performance at all, but it wont really increase anything either.

okcnaline · Sep 11, 2014

Depends on what the card is. If it's an awfully-made GTX 770, then it's all right, but NVidia doesn't allow GTX 780 with GTX 770.

Prophet171 · Sep 11, 2014

yeah i dont know how low end it is, it was probably mid range like a few years ago. I doubt it could be SLI'd but okay gam3r so there is no point to even wasting space with an old video card in there if it doesnt increase or decrease performance. And the new card he wants is GTX770 and why doesnt nvidia allow a GTX780 to be paired with 770?? just curious my buddy isnt getting a 770 but yeah just wondering why nvidia doesnt support a 780 with a 770 to be sli'd?

Gam3r01 · Sep 11, 2014

Probably not point, it will simply draw more power.
The 780 and 770 cant be paired in SLI because they are of different architecture

Prophet171 · Sep 11, 2014

Ah okay i see, i will tell him no point just get rid of old card. Thanks for help guys, but on another note i am just curious about that last comment of yours. It is different architechture but is there any specs or anything listed when purchasing a 770 or 780 that would allow me to see that? Like if you didnt just tell me that and i could only afford a 780 and a 770 at the time and purchased them both for them not to work together?? How would i know or see that they would not be compatible to run together.

Gam3r01 · Sep 11, 2014

Looking it up, thats about the only way to know other than trial and error.
Luckily Nvdia has lists to help with this.

Prophet171 · Sep 11, 2014

Okay so other then wasting money with trial and error just pretty much do your research/homework on detailed stuff like that and use nvidia lists. Okay well awesome thanks gam3r and everyone else for your input and help. Appreciate it greatly.

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