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A dedicated physx with SLI.... - Page 2

post #11 of 23
Even with a single 580 you wont need a physx card but if you want one here you go.

This is the best card to use for physx.

http://www.newegg.com/Product/Produc...-625-_-Product
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post #12 of 23
For the record dedicated physx cards don't work with the latest divers unless your using 3 of the same card which you would just do tri sli anyway. the only game it worked well in was arkham asylum any thing else just dropped my frames considerably. id just save the money
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post #13 of 23
proven fact that , the performance u will get from physx on both 580's will be alot better than any dedicated card you add .

dont do it .
    
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post #14 of 23
Quote:
Originally Posted by GullyBrookLane View Post
For the record dedicated physx cards don't work with the latest divers unless your using 3 of the same card which you would just do tri sli anyway. the only game it worked well in was arkham asylum any thing else just dropped my frames considerably. id just save the money
Works just fine for me.

OP with 2 580s I dont think it would be worth it to run a physx card. As others have already said 1 is more than enough power to max just about anything so if you just split them for physx games you should do just fine.
 
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post #15 of 23
Quote:
Originally Posted by nagle3092 View Post
Works just fine for me.

OP with 2 580s I dont think it would be worth it to run a physx card. As others have already said 1 is more than enough power to max just about anything so if you just split them for physx games you should do just fine.
are you using the 270.51 drivers? the release notes stated they discontinued hybrid sli and my 275 no longer shows up in the control panel?
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post #16 of 23
What have been said above I will not repeat.

Let me concentrate on the Physx card itself: when choosing a Physx card, it is the number of cores/shaders that is the most important factor. Nvidia says a minimum of 32 but experience posted all over the net indicates this amount is not really enough. Personally I suggest a min of 96.

A budget of US$150-200 for a Physx card is really a lot.
Pushing to the upper limit, a Palit GTX560 Ti 1GB can be bought at US$210. It packs 384 shaders.

Next one down, at around US$180, is EVGA GTX465 1GB which sports 352 shaders.

Then, there is a Gigabyte GTX460 1GB (336 shaders) at around US$151.

But, as VRAM is not an important factor, a Galaxy GTX460 768MB (with 336 shaders) is now selling at US$95 (after MIR) which is well below your budget.
(All prices are taken from Newegg)

Besides 'need', I agree that there are other reasons to have a Physx card. If you have one or more of these reasons, this Galaxy GTX460 768MB is what I suggest to go along with your GTX580 SLI.

http://www.newegg.com/Product/Produc...82E16814162058

Edit Reminder: Adding a Physx card will bring in other considerations as I see that you are building a new rig. For examples, the PCIe lane layouts of the mobo, thermal management (not only the heat exhaust by the Physx card but also its possibly blocking the intake fan(s) of one of the GTX580...unless you go water cooling...the case...etc...etc)
Edited by windfire - 5/8/11 at 6:21pm
post #17 of 23
Quote:
Originally Posted by GullyBrookLane View Post
are you using the 270.51 drivers? the release notes stated they discontinued hybrid sli and my 275 no longer shows up in the control panel?
Hybrid SLI has nothing to do w/physX, and you can use any supported physX card to work as dedicated card along with any primary nV GPU.
    
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post #18 of 23
A physx card would just be slowing those beast's down
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post #19 of 23
I would have to agree with everybody else here. With SLI 580's (heck even just one 580) there is absolutely no need for a dedicated PhysX card. PhysX isn't going to be taking off anytime soon. It's a marketing gimmick by Nvidia, nothing more, nothing less. Until they can share that gimmick with the red team, developers won't take advantage of it, since it alienates half their customers anyway.

If you HAVE TO, get a 460 768MB. But you'll find that its not worth it honestly.
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post #20 of 23
If you have the money and really want it, I'd get something fairly powerful.

Maybe a used 470/480 since the price is quite right on those cards.

My 9800GT is too slow for 470 sli, it bottlenecks my cards.

It starts off ok:


But as more and more tasks are added and more stuff is being rendered/tracked it caps out and the result is my 470s get bottlenecked on it.
    
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