I have a 1070 running, and a 770 lying around. I just got a new PSU and I'm getting a new case soon. I plan on using the 770 as a physx card.
This video seems to suggest that it wouldn't be a bad idea
Don't worry, it's a Luke video.
So, what's your physx story?
Oh god no.
Sure why not
If you want more heat in your case and higher power draw, aka lower longevity of components and a higher electricity bill, with no perceivable performance benefit, then yes, use a 1070 with a 770 for a PhysX card.
I can't imagine anyone would want any of those things though...
How much extra heat/power would you realistically expect there to be?
Keep in mind as we saw in the video the second card wont ever be running flat out. maybe 50/60%
Well, you'd have to consider the heat output of the 770 itself coupled with the fact that it's probably crammed right next to the 1070, so depending on what type of cooler each has... it could definitely contribute, directly and/or indirectly.
Yes, that's true.
I just don't think it will be all that significant with the 770 running at half load. Though if the cards aren't a slot apart it may cause the 1070 to heat more then it normally would that's true.
IDK It's like why do people buy an i7 6850X for gaming? Because they can.
so I say why not haha
when you asked this I thought you were asking from a programming standpoint.
I once had a machine that had 2 PX7900GT's in it. One ran PhysX most of the time. One day my machine got really hot and the PhysX card melted. The other card was still fine.
I to this day have no clue what happened.
PhysX is about playing games the way they were meant to be played. If people don't want realistic particle effects then I think they are crazy. Why would you want less than what you can get? People always bring up the argument that there are not many games that use it but every single year more and more games are added to the mix that use it. It is not a gimmick as it really does add something worthwhile. The reason people call it a gimmick is because they don't want to shell out more money for an Nvidia product but the facts are you don't need to. You just need to pick the card that is in your price range and then play with PhysX on for games that the card can handle. I never paid very much money for my GTX 670 or my son's GTX 760 but many games I have no issues getting great frame rates with PhysX on with maximum settings at 1080p. I am not saying I can do this with every game but many I can. Anyway I will add more to my post at a later time when I have more energy to talk about PhysX but right now I am spent after a long day and eventually want to play some games and watch a movie before hitting the hay.
Last time I used PhysX was for Borderlands 2, and ran on my CPU at Medium settings. The effects are pretty cartoony specially the fluids. I thought it was mediocore and a gimmick at best. I've seen complex collisions implemented better on other engines that doesn't rely on proprietary GPU acceleration such as Cry Engine and Frostbite Engine, even Havok middleware has pretty comparable complex collisions and and scales on any hardware (even consoles). HairWorks is a joke, TressFX 3.0 (Pure Hair derived from it) ran so much better and scaled on so much more hardware and its code is used more widely in other engines in comparison (look at the Rise Of Tomb Raider, Deus Ex: Man Kind Divided, and Final Fantasy XV).
If remember correctly between physx and the regular nvidia drivers the experience was so terrible that switching to Amd was Heaven :) Nvidia is still ass at multimon in comparision. :)
GPU PhysX is largely a worthless technology that has been effectively dead for some time. Very few games these days use PhysX. The few that do render it on the CPU. CPU PhysX rendering can do essentially the same effect with similar performance. No need for a second card or a nVidia card at all.
Your 1070 is sufficiently powerful enough to do the PhysX rendering itself with out the need of an additional card. Your CPU could easily handle it too. Furthermore, a PhysX card needs to be nearly as powerful as the primary GPU or else the performance can actually be worse as the faster primary card needs to wait for the second card to do its thing.
Adding a 770 into your rig for PhysX would be foolish. You would get no benefit in most games, some may be worse even. In exchange you'd get more power draw, more noise and more heat. That's about it. Plus the close proximity of that card to the 1070 would cause the 1070 to likely run hotter. This means lower boost clocks, and worse performance, or louder fans.
All in all pretty pointless but hey no one is stopping you. If you wanna try it and your power supply can handle the extra draw then go for it. Can always take it out later
Physx at one point was something semi useful
now
not at all.
And most games don't use it or if they do it really doesnt affect anything. So adding the second GPU wouldnt do much for you, unless you happen to also need more displays.
I like that the "PhysX card" is the one that melted, because to this day nVidia has locked PhysX support (in PCs) to include ONLY CUDA capable GPUs. Anything that predates G80 is not CUDA capable, and therefore could not have acted as a PhysX coprocessor. So your card essentially died doing nothing.
OP, I'd like to see a comparison between the CPU physX and the 770 physX. If you go with it, benchmark before and after. Power draw, Temps, FPS, etc. for Nvidia physX games of course.
Because realistic particles require 3 to 5 TFLOPS double precision to calculate 2 million particles?
I get your point there, but realistic particle behaviour and good looking particle behaviour are not always the same.
I don't use it since I only have a few games that actually have it, and I don't notice it when its enabled. I'd rather have a higher frame-rate.
Maybe a 770 doesn't make much sense, but a 750ti or a 1050 or 1050ti? A 1050ti is nipping at the heals of the 770 performance wise and can be had for around $130 after rebates if you are lucky...
These low end cards sip power compared to most other GPUs and don't generate a large amount of heat and it would appear that they have enough power not to hold back a 1070 or 1080 paired with them.