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Which card for PhysX with a 7970? 640 or 650? Advises? - Page 2

post #11 of 60
Thread Starter 
Quote:
Originally Posted by Rickles View Post

if it's for borderlands 2 the 690 might oddly enough be the best recommendation. I tried with my 9800 gtx+ and dropping to 0% load on a 7970 makes head shots pretty tough. I would go no less than 460 / 550 ti / 650 in each of their respected families. The last thing you want to do is get a card that can't fill the bill and will end up sitting on your desk holding your coffee mug.

I was considering 640 or 650 as good compromise with power consumption but I totally didn't know the proper level of card!?
For example as performance is 650 so lower than a 460?
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post #12 of 60
Quote:
Originally Posted by Scorpion667 View Post

690gtx
anything less is going to bottleneck your 7970
/sarcasm
People still use dedicated Physx cards? It's just rare that I see that setup these days.

People still use Radeon cards rolleyes.gif
Quote:
Originally Posted by Luca T View Post

I was considering 640 or 650 as good compromise with power consumption but I totally didn't know the proper level of card!?
For example as performance is 650 so lower than a 460?

Yes, the 650 is slower than the 460 bit a little
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post #13 of 60
Thread Starter 
But if I have to consider the performance level of a 460 and it consumes 160w ( I thought it was a little too much for just an additional card, I was considering the 650 even for the 85w) then the 660 is little further as performance and consumes 140w
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post #14 of 60
thus the state of pickle-plexity insues. If you are buying new you might be able to try one and return it if it doesn't work out too well, although I think you might have to pay restocking fees.
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post #15 of 60
If all you have is a single 7970, you should seriously be fine with a 650
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post #16 of 60
go check out the thread where the guy has 2 690s and is running a 680 as physx... he has the same perforrmance drops
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post #17 of 60
My current setup: 7950 on the bottom with GTX 470 as PhysX.


The only game that is bottlenecking the 470's PhysX is Borderlands 2. Using FluidMark, the max usage that it can deliver is 65% if only PhysX; Borderlands 2 brings the usage to about 55%.


Batman AC nets about 35% usage, Alice nets around 20%.

If you're serious about using a dedicated PhysX, you will need a GTX card if you want to use high settings on the current games.

Here's a screenshot of the Batman Arkam City launcher.


'high' PhysX settings specificaly recommends a GTX460 as dedicated.


Your question as to 640 or 650 for PhysX? The answer should be tied to how many CUDA cores

The 460 has 336 cores.
The 470 has 448 cores.
The 640 has 144 - 384 cores.
The 650 has 384 cores.
Edited by Wnivre - 9/28/12 at 11:11am
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post #18 of 60
Thread Starter 
Thank you so much to evryone!

So it should beh more indicated the 650, but after your explanation I Think considering Batman2 the last one and that need at least the 460, is the 650 too close to the edge for the future games?
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post #19 of 60
Someone told me a 6950+GT430 was enough for high physx on borderlands 2. The only game that could possibly need more is metro 2033. But why pay 100 bucks if a 40 dollar card is the solution?
post #20 of 60
If you can ever get a dedicated physx to work wheee.gif
     
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