Using Nvidia as main card and Ati as secondary

strelokexo · Mar 21, 2013

hello
Ihave two graphics card one is Nvidia GTX560TI 1GB and another one ATI Radeon HD 5450 2GB . i want to use the Nvidia card as the primary graphics card and for physix and Radeon only to increase the video memory and to support other radeon related games. I attached both the card to my motherboard and plugged the monitor plug to my nvidia card and when i played games like Borderlands 2 i was unable to use physix its option was turned black but when i removed my radeon card i was able to use the physix, can anyone help me with this problem any help will be appreciated, and thanks in advance.

tenaciousk · Mar 21, 2013

I don't believe you can run both graphics drivers simultaneously while gaming, you need to use one or the other. I do believe there are motherboards that can do something like this... which motherboard are you using? most llikely though. you are going to have to pick one or the other.

strelokexo · Mar 21, 2013

tenaciousk :

I am using MSI 9704-G46 motherboard

jnkweaver · Mar 21, 2013

And as you are discovering the two display drivers do not play well with each other.

blazorthon · Mar 21, 2013

You could use them both, but not in the way that you're thinking. You can't combine the graphics memory between cards. The PCIe bus simply doesn't have enough bandwidth to do that.

PhysX's current versions automatically disable GPU PhysX when a Radeon card is detected. You'd have to go to an old version of the PhysX driver to use PhysX in a system that has an Ati or AMD card because Nvidia doesn't like their customers using competitor's products in the same system.

Besides, the Radeon 5450 is so slow that it wouldn't make a difference even if you could do what you want to do. It's not even able to beat Intel's HD 3000 in most gaming tests.

strelokexo · Mar 21, 2013

As i have told i have connected monitors plug to my Nvidia gpu so according to this configuration which is my primary gpu then.

blazorthon · Mar 21, 2013

Whichever card has the monitor(s) that you game on is usually the primary card. The Radeon 5450 isn't even worth using for modern gaming because it's so slow compared even to the low end cards these days, so unless you're using it for something such as adding extra non-gaming monitors or such, it really doesn't do you and good that I can think of anyway.

renz496 · Mar 21, 2013

with win seven you can use both but if you put nvidia as primary the ati cards will only provide extra monitor output for your system. it will not going to help to improve anything in regards to gaming performance. any game you play will automatically use the cards in the primary slot. if you put nvidia cards at secondary it can help with gpu accelerated PhysX (via hacked driver) plus extra monitor output for your system. in short there is no such a thing to get the best of the two world when you put both cards together in one system. lucid hydra try to make that into reality but it seems their effort are not going anywhere. if such a thing really take of we might see more people are doing what you're trying to do.

strelokexo · Mar 21, 2013

which means i will be unable to use physix until i remove the Radeon card. will i get any perfomance boost if i keep that card on my mobo or should i remove it.

renz496 · Mar 21, 2013

you can but needs hacked driver to do it. the only problem might come out from this is when the new games required new version of physx than provided with the hacked driver. if you really want physx just go for pure nvidia setup. much easier that way. also you have to think if PhysX really worth for you because very few games with gpu accelerated physx. even games like borderland 2 you can still enable extra physx stuff on the game without nvidia card albeit it will slow down the performance a bit.

strelokexo · Mar 21, 2013

renz496 :

so is it helping me in increasing video memory

blazorthon · Mar 21, 2013

No, it does nothing for video memory.

renz496 · Mar 21, 2013

no it does not.

strelokexo · Mar 21, 2013

blazorthon :

should i remove it

strelokexo · Mar 21, 2013

renz496 :

should i remove it

blazorthon · Mar 21, 2013

I'd recommend removing it if you're not using it for something else. At best, it won't improve gaming performance for the 560 Ti and at worst, it may hurt performance and/or remove current version GPU PhysX compatibility while wasting a little power too.

strelokexo · Mar 21, 2013

Thanks people for your HELP. specially blazorthon & renz496

blazorthon · Mar 21, 2013

Glad to help

Using Nvidia as main card and Ati as secondary

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