Worth keeping old GTX 660 in SLI with GTX 1070?

Scintillo

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Jun 1, 2013
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I'll most probably get GTX 1070 when it launches. (Or GTX 1080, I'll decide once I see the benchmarks.) I currently have GTX 660. DirectX 12 (and Vulkan) brough some options for developers to utilize multiple cards in games even if they are different power levels. What's the current state of DX12 implementation in games, is it worth to keep the old GTX 660 in SLI? Will it bring any performance improvements or will it just bring trouble? Maybe it's worth keeping as dedicated PhysX card? (Is that even possible anymore?)
 
Solution
You can keep it as a PhysX card no problem. SLI doesn't work between the two and there is only one single game right now that even pretends to use DX12 multicard rendering so it is too early to tell.


Sure keep believing nvidia bs. the gtx 660 does support few features of dx12 NOT the full thing and sure keep the 660 as a physx card when there's literally like 3 games in total that support physx and even those are so old that a gtx 960 will run them just fine on it's own.
 


Please go back and re-read my post I never said it supported the full gamut of DX12 features. Just that it did support DX12 in some fashion. In fact we don't even know how much of DX12 Pascal will support. You can see the exact features supported here.

For Physx: That should be decided on a case by case basis and whether it is worth it to you. Some games benefit greatly from it the Batman series and Borderlands as well as the Witcher 3 (2015 there too I might add) immediately come to mind. All of those games benefitted from having a Physx card when they came out and it isn't like they aren't making anymore physx games. You can google that on your own.

That said will the 660 be fast enough to pair with a 1070/1080 for physx and not slow everything down? IDK and until there are some benchmarks I will not know. Which is why I said "it is too early to tell" in my original post.
 


Have you forgotten that physx is used to move loads from cpu to gpu? as long as you have a half decent cpu physx is absolutely useless.
We don't know will pascal fully support dx12 but we do know that AMD currently supports it shitloads better than Nvidia and will likely have a lot better performance in dx12 and vulkan games (vulkan is based on AMDs technology after all).
 


You also understand that a GPU (980Ti 5.63 TFLOPS or the 660 1.8 TFLOPS) is vastly more powerful than a CPU (6700K 250 GFLOPS) and uniquely suited to handle certain physics calculations?

Our discussion wasn't on AMD cards we were discussing Nvidia and of course AMD supports it better GCN is a fantastic compute design.

Regardless this thread is becoming sidetracked and I will not be replying to this unless the OP posts something.