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Would a 9800GT Dedicated for Physx bottleneck a GTX 660?

post #1 of 26
Thread Starter 
Hi everyone,

I Currently Posses a 9800GT and im planning a complete overhaul of my pc. I have seen that many people used this card as a dedicated physx card and that it went well.

I would like to see if that would be the same in my case.

My specs:

CPU: Intel Pentium G620
RAM: 8GB
VGA: Inno3D 9800GT
Sound: Asus Xonar DX
NIC: Intel PRO/1000 PT
SSD: Intel 330 120
HDD: 160GB+500GB
PSU: Seasonic 430W

The planned upgrade at this stage is buying a GTX660.

Would the 9800GT bottleneck the GTX660 as a dedicated physx and the GTX doing the graphics?
Also need to note that i run 4 screens in no particular order and use only the main 22" 1920x1200 for gaming.

Thanks thumb.gif
post #2 of 26
I don't see how it would bottleneck it at all, since you are just offloading physx work from the 660 to another card.

But then I don't know how that works... I have a core unlocked 465 running physx alongside my titan and it is great. I have seen that a physx card can potentially lower performance in games that don't use physx however, but I haven't noticed it at all.
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Gran Turing(0)
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post #3 of 26
Thread Starter 
That answered my question..
Thanks thumb.gif
post #4 of 26
a Physx card can bottelneck the main card in games that use Physx

their are not many benchs of this out their so the easiest way to check it out would be to just test it yourself

remember that when you test it use a game that is highly Physx demanding, to stress and slow that 9800 of yours to the max doing Physx to see if you get more or less FPS then a singel GTX660ti
if it doesn't you are good to go tongue.gif
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post #5 of 26
As an educated guess, I think the GTX 660 will be faster handling the physx duties alone.
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post #6 of 26
Let me join wit the question which appeared when I saw subject.
I am running 3770k on z77x-up4th with gtx680 and I have old 9800gt1gb laying down so can it be any helpful in running system? I had newer runned sli configs
Thanks
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post #7 of 26
Thread Starter 
SkyNetSTI, seeing that you already have the hardware could you please check? Just for sake of curiosity? thumb.gif
post #8 of 26
Quote:
Originally Posted by SkyNetSTI View Post

Let me join wit the question which appeared when I saw subject.
I am running 3770k on z77x-up4th with gtx680 and I have old 9800gt1gb laying down so can it be any helpful in running system? I had newer runned sli configs
Thanks
You can't SLI cards from different generations. You just plug it in and do some stuff and it should work.
9800GT is pretty weak though, think the 680 will do better off without it.
post #9 of 26
Socks has a valid point, that you can't SLI two different generation cards like that. But, for using the second card purely as PhysX duty, you wouldn't need (or be able to) enable SLI anyhow. Just stick the card in there, assign PhysX to the 9800 in NVidia control panel, and test your favorite PhysX game and see how it does. Then pull the card, and compare the performance with just the GTX 660. I think you'll find that PhysX doesn't stress the card that much, and things probably run a little better with just one card.

Greg
post #10 of 26
When I was running Physx with my 8800GTX along side my GTX 680, it caused issues.
 
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