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PhysX

post #1 of 7
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I understand what PhysX is but do you need a second NVIDIA card to take advantage of PhysX. And when using "Phaedrus Quick'n'Dirty PSU calculator" do I have to include PhysX if I am buying ONE GTX 460 SE? Sorry if these questions are really nooby questions, I only recently decided to switch from ATI/AMD to NVIDIA.
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The Little Giant
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post #2 of 7
Quote:
Originally Posted by Aceuniverse View Post
I understand what PhysX is but do you need a second NVIDIA card to take advantage of PhysX. And when using "Phaedrus Quick'n'Dirty PSU calculator" do I have to include PhysX if I am buying ONE GTX 460 SE? Sorry if these questions are really nooby questions, I only recently decided to switch from ATI/AMD to NVIDIA.
you CAN run physx off of one card but the whole point of it is to split the load up better between the two cards and pull stress off of your CPU. If you run it off a single card, your CPU does less but then your GPU does more so it's not really worth it with a single card.

before someone yells at me for incorrect info, i am definately not a physx pro. This is just stuff that i learned from own experiences testing physx.

honestly though, physx isn't where it could be imo. i saw a 2-3 fps difference while using but then again that mite not of even been because of the physx(only tried it a few times).
i was using a gtx275 for main, gts250 for physx. i ended up just buying another gtx275 and runnin sli...much better performance for the games i was playing.
Edited by Hazzeedayz - 7/19/11 at 8:57am
post #3 of 7
honestly, physx isn't worth it. maybe in the future but the games that utilize it are a limited number.

you'll see a better performance boost when using a stronger single video card solution than a lower single video card for graphics and another for physx

it'll help us much better if you post what your specs are. or future specs from what it looks like.

and yes, you have to take in thought of how much power a physx card will pull since it does use the psu.
    
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post #4 of 7
Quote:
Originally Posted by Aceuniverse View Post
I understand what PhysX is but do you need a second NVIDIA card to take advantage of PhysX. And when using "Phaedrus Quick'n'Dirty PSU calculator" do I have to include PhysX if I am buying ONE GTX 460 SE?
IMHO it depends on the games you planning on playing. And you dont have to buy $$$ a separate card. Any Nvidia 86xx series or newer will do.

To buy a 460 for physix would be a waste. It would serve you IMHO much better as SLI.
Different games use physix differently (doh). For instance BFBC2 you cant tell physix is even working, same for F1 2010.

However Mafia II needs a lot of power, ALOT. I used 2-480's and it was still slow. I had to install a GTX 280 just for physix= 2-480's and 280. It made all the difference in the world, 20fps difference. Poor PSU.
Here is a physx wiki
http://en.wikipedia.org/wiki/PhysX
The games that have the physix in the interface need alot of power.
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post #5 of 7
PhysX is a wonderful thing....when you find a game that works with it, for example, Metro 2033 in DX11 with PhysX on looks amazing! Same with Mafia II, but both need alot of power to be playable at those levels.

I have a MSI 460GTX for my PhysX engine, and it handles everything very well, but then again I only paid $99 Canadian for it, so it wasn't like I was breaking the bank.

I did have a eVGA GTS250 in my rig before I got the 460 and it did everything quite well with only showing some lag in some of the more demanding games.
     
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post #6 of 7
physx is not that great of a deal as some make it....
its better u invest in sli rather than wasting money for separate physx dedicated card...
then in sli if u r playing some physx intensive game, u can force physx on a single card...problem solved....
so sli is the win-win situation....
Edited by ghost_z - 7/19/11 at 9:08am
post #7 of 7
Quote:
do you need a second NVIDIA card to take advantage of PhysX
If the first and only card is a 460 SE, then yes I would say you'd need a cheap $50 card to activate PhysX in titles like Mafia II and still get playable fps.

Quote:
when using "Phaedrus Quick'n'Dirty PSU calculator" do I have to include PhysX if I am buying ONE GTX 460 SE?
If you are only buying one card and are not going to purchase more, either another for SLI or a dedicated PhysX card then no you would not need to include it. If you plan to upgrade in the near future plan your PSU purchase based off what you will do, not what you are doing.



Please keep in mind that the 460 SE is a cut down 460, it isn't a card many people here would recommend, a basic 7xxmb 460 would be a much better choice if budget is a concern.
    
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