Nvidia for Phyx and ATI for normal graphics

Dear Experts. I have a friend whose PC is currently equipped with a Geforce GTX 570. He wishes to replace it with a higher ATI 7970 graphic card for the purpose of video editing. Given that his motherboard can take up to 4 graphic cards, he was wondering rather than replacing the old Geforce GTX 570 would it be possible to keep it such that it would be dedicated to Phyx while adding the new ATI such that it would be used for normal graphics (mainly gaming) and video editing.

Thanks for the advise in advanced
a_anis3000Asked:
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dbruntonQuid, Me Anxius Sum?Commented:
This may or may not work.

The motherboard has to be able to support two cards but you say this board can.  Also consider the power supply.  Does it have enough grunt to run both cards, one will probably be idling though.

Some boards don't play well with certain graphics cards, some Nvidia boards don't like AMD graphics cards for example, so check and see if the board supports the proposed card.

As for setting it up I can't help.  I'll let other experts comment on that matter.
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a_anis3000Author Commented:
Hi dbrunton. The motherboards can take up to graphics cards, Its an expensive ASUS board designed for hardcore gamers. The PSU is at least 700 Watts which we are planning to replace if the wattage won't be sufficient for the two cards of course.

You might be right about the potential conflicts between two dissimilar cards when it comes to mixing AMD and Nvidia card as I have seen some similar question in EE suggesting similar concerns when it comes to installing both of the drivers. However these topics are quite old, so chances this has changed nowadays.
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vo1tyCommented:
Good Day

Due to specs and Driver Difference,I believe that it wont be possible unless 2 of the same cards is used,does the motherboard have setting to choose between the cards,if not which one would be the primary,as when you use 2 ATI cards you use crossfire to make them one primary card!

Unless the Motherboard supports this type of modification to choose between the cards in the bios,I don't believe it would work

Regards
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a_anis3000Author Commented:
Unless the Motherboard supports this type of modification to choose between the cards in the bios,I don't believe it would work

I will then find out the exact model number for this motherboard and research if it does indeed support this feature and get back to you.
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dbruntonQuid, Me Anxius Sum?Commented:
Generally the primary is the card in the first PCI Express slot.  So if he puts the ATI there it should be the primary.  And if the GeForce is another slot it becomes the secondary.
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a_anis3000Author Commented:
Generally the primary is the card in the first PCI Express slot.  So if he puts the ATI there it should be the primary.  And if the GeForce is another slot it becomes the secondary.

That is interesting piece of information. I will keep that in mind in case the motherboard specification doesn't say anything about the feature vo1ty mentioned.

One more concern though. Suppose the primary and secondary card are set, do I still have to worry about the risk of conflicts when AMD and the Nvidia drivers are installed in the same system?

Thanks again in advance
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dbruntonQuid, Me Anxius Sum?Commented:
You can only try.

From http://windows.microsoft.com/en-nz/windows-vista/video-cards-frequently-asked-questions

Can I use more than one video card in my computer?

Some computers allow you to plug in two or more video cards, each connected to its own monitor. Other computers allow you to pair video cards for display on a single monitor to increase performance, using technologies such as NVIDIA SLI, ATI CrossFire, or another technology. Check with the manufacturer to see if your computer has the necessary hardware to support multiple video cards.

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And I'll  throw this in http://superuser.com/questions/93390/multiple-graphics-cards-need-to-be-the-same

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As for the conflict can't tell until you try.
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a_anis3000Author Commented:
Sorry for the delayed response, I couldn't reach my friend for a while. I got the model number of his motherboard its ASUS P9X79 PRO. It doesn't say if this board support the settings vo1ty mentioned though (the ability to manually specify primary and secondary card). The only thing I found that it does support both SLI & Crossfire as far as graphic cards goes

Both SLI and CrossfireX architectures work flawlessly on new ASUS X79 boards, with PCI Express slots designed to accommodate the power of up to four current graphics cards. Whether for professional graphics work, heavy duty multimedia or dedicated gaming, more than ample graphics power can be applied whenever needed.

I take it that it basically means multiple graphic cards are possible in this motherboard, the question if that includes mixture of AMD and Nvidia cards (in our case one GTX 570 for phyx and one AMD 7970 for normal graphics)

Thanks again in advance
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dbruntonQuid, Me Anxius Sum?Commented:
Well, the manual doesn't state that a mixture of two different brands is possible.   There appears to be nothing in the manual that shows how to select cards in different slots for booting purposes.

It gives procedures for installing either multiple AMD (Crossfire) or multiple Nvidia (SLI) cards.  It looks like it will take three Nvidia cards.  It isn't totally clear on how many AMD cards it will take.  It also specifies which slots to use if you intend to use either a single card or multiple cards for either SLI or Crossfire mode.  It does recommend Slot 1 for only a single card but it is possible that a graphics card might work in another slot.

So the answer is still unclear.
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331BKCommented:
From Windows side of view i think it`s possible but i think you can not choose the GTX570 as deidcated Physix card because the 7970 and the 570 are not "talking" with each other.

So if you want physix you have to connect the Display to the GTX570  and if you want to play with the 7970 you have to connect the Display to the 7970 but then you don`t have physix.

So i think you can have to different cards in one system but you can not choose one for physix and the other one for graphics.
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vo1tyCommented:
Hi I think the best way to test this theory,is to take the chassis with when you go to buy the extra graphics card,and ask them to test,the card you looking to purchase,to see for compatibility if this will work and if it does buy the card,otherwise by speculating you might cost yourself some money,this is the best solution

Let us know!

Regards
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a_anis3000Author Commented:
Hi I think the best way to test this theory,is to take the chassis with when you go to buy the extra graphics card,and ask them to test,the card you looking to purchase,to see for compatibility if this will work and if it does buy the card,otherwise by speculating you might cost yourself some money,this is the best solution

Let us know!

Regards

Unfortunately the local stores in where we live has "No refund or exchange" policy except for warantee services. Particularly true if the package is sealed and its open so I doubt they will be willing to open one for testing purpose.

Anyway based on the various feedbacks I got from you guys my friend feels the investment was too risky so he is going to just swap the card with an ATI.

I would just get another Nvidia card if I were him for a guaranteed co-existence with the current GTX 570. However he believe ATI are better for video editing

Thanks for the feedbacks though, I will keep them in mind since I myself interested in trying out going for multiple GPU configuration
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