Help With Dedicated PhysX Cards

[Smexy Potato]

Hi, short question here.

 

How would a GTX 780 handle just the PhysX operations of my computer? I'd like to have the 4GB of VRAM that the 980 has and not put as much stress on it. Would I still be reduced to the 3GB of VRAM or would my system use the 980 for everything but PhysX?

 

Also, how would drivers support this?

[Aniallation]

It will help, but it won't be a mind-blowing improvement. If you already have the 780 then sure why not, but IMO it's more worth it to sell it then use it as a dedicated PhysX card.

[Guest Kloaked]

It's not worth having a dedicated PhysX card for gaming anymore.

[Guest]

No need; even a GTX 960 can handle high-end PhysX in new games. It's no longer a technology that bogs down GPUs to the point of needing a dedicated one.

[Laederem]

In the decimal system, since numbers are based off of approximations only instead of exact fractions, a majority of the times numbers in calculations and statistics reportings are rounded to avoid a very long (and not quite informative in most relative situations) string of numbers. Take for example, the number Pi, which gets typically approximated to 3.14, or at most (more or less) 3.14159, but we often choose to represent that with by the character π.

 

Now, if you were to report a statistic to three significant figures, the number 9.494534 would be rounded to 9.49. This is useful sometimes for simplicity and easy to compare "digestible" data. Other times it will be used to compensate for imprecision in scientific and mathematic applications.

 

If we were to scientifically quantify the benefit of a GTX 780 for PhysX based computation on vidya games, the near "true" numbers would probably look like:

 

Benefit of 0.001% raw performance boost .003% of the times. The added heat, power draw, and [opportunity] cost of the 780 as the PhysX card are vastly different quantifiable values as well, but let's save that for another day. 

 

based on the previous bits of knowledge, you can probably see where this is headed and to what the "simple" benefit is, and due to the answer of this particular question, we can ignore your other questions pertaining to the topic and chalk that to a loss of no value.

[Smexy Potato]

Ah. Well I've got a 760 lying around. I could use that. Guess I'll sell it for another 980, was going to get a 780, but like I said, I want 4GB of VRAM. Thanks for the answers!

[Dabombinable]

GTX 650Ti, a lot slower than an GTX 780 and with only 2GB vRAM, the maximum FPS when playing PhysX games changed to the average (GTX 970 with 150MHz OC). Its worth it if your playing games that use PhysX. Otherwise its pointless.

[R_Golden]

Ah. Well I've got a 760 lying around. I could use that. Guess I'll sell it for another 980, was going to get a 780, but like I said, I want 4GB of VRAM. Thanks for the answers!

Test it yourself and post the frames, that's what I would do. Fun way to spend the day

[Smexy Potato]

Test it yourself and post the frames, that's what I would do. Fun way to spend the day

Ah okay. I've just got to wait for my 4960k to arrive. Getting some new stuff for the PC.