GTX 970 + GTS 450 PhysX?

IceWolf75

Honorable
Oct 16, 2014
17
0
10,510
I have a Gigabyte GTX 970 G1 Gaming. I also have a GTS 450 from my kid's PC and I want to make this one a dedicated PhysX card.
It is worth it or 450 is to slow for PhysX and is better to keep it on GTX 970 GPU?
Also, the first PCI-E will still work at 16x?
I never tried 2 video cards before and I don't know much about.

And another thing - this is my MB. It will work?
http://www.gigabyte.com/products/product-page.aspx?pid=4327#sp

PS: Excuse my English, is not my native language.
 

nick779

Honorable
Apr 23, 2012
144
0
10,710


I mean I can kind of relate, I had a 770 and tried using a 640 I had lying around, and it worked like crap. I did however borrow my buddies 660 and it made a significant difference.
 

IceWolf75

Honorable
Oct 16, 2014
17
0
10,510
Yeah, maybe I will. This week or next week I will upgrade my child PC with a 750Ti and I will have that 450.
As for benchmarking - what should I use?
PLA? I mean this one? http://www.geforce.com/whats-new/articles/put-your-system-through-its-paces-download-the-pla-directx-11-and-physx-benchmark

Or 3DMark? Or just real games benchmarks? I have Watch_Dogs, Alice Madness Returns and Borderlands 2 installed at this moment and I can install some more, like one of Batman series or Assassin Creed 4. I know for sure these games use Physx (I am not sure about W_D).
 

IceWolf75

Honorable
Oct 16, 2014
17
0
10,510


I didn't run any benchmark. Performance was bad or the same in the games I tried, so I give up. Until I get at least a 650 or better, I will not try again.