For Dedicated Physx: GTX 650 Ti vs GTX 750

MrJak · Dec 16, 2014

Which would be better for physx?
A GTX 650 Ti or a GTX 750?

A couple others I am curious about:
750 ti, and 650 ti boost?

By CUDA cores alone, it seems it would be:
GTX 650 ti Boost > GTX 650 ti > GTX 750 ti > GTX 750 > GTX 650

Also, does anyone know if you can use NVENC (Shadowplay) to record video, even if only a secondary GPU supports it?
Let's say a GTX 590 with a GTX 650?
If not with Nvidia's Shadowplay, what about with OBS (Open Broadcast Software)?

17seconds · Dec 16, 2014

The GTX 750 or 750 Ti are the best out of that group. They have a relatively high CUDA core count, but also higher clock speeds, both important for PhysX processing. The best thing about the Maxwell based cards, like the 750, is their lower power usage and lower heat generation... perfect for adding as a second PhysX card.
http://alienbabeltech.com/main/using-maxwells-gtx-750-ti-dedicated-physx-card/

Not sure about your Shadowplay question, but if your second card is just a PhysX card, not hooked up to a monitor, then I don't think so.

MrJak · Dec 17, 2014

17seconds :

Thank you for your response

So, even though the 650 ti has a higher count, the 750 would be better?

As for Shadowplay, I would be doing on demand recording, rather than the always on recording.

17seconds · Dec 18, 2014

The 750 will be better, mainly for the power consumption, but clock speed plays a big part in it as well. The 750 wins by quite a bit there.

Here's a review of the 650 Ti as a dedicated PhysX card. Maybe you can do some cross-comparison between the two articles. They definitely imply that the clock speed, in addition to the CUDA count, is a deciding factor.
http://1pcent.com/?p=169

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For Dedicated Physx: GTX 650 Ti vs GTX 750

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