• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Another nail in the coffin for PhysX

Phixsator

Phixsator

Phixsator

Soldato
Joined
10 Oct 2012
Posts
4,842
Location
Denmark
Let me start by saying i understand that sometimes you cannot make software work with older hardware. That said though at the moment physx does not need more things against it than what it has already. What do i mean?

Well i thought i would test dedicated physx performance in batman AK and since i had a win 8.1 install ready i popped in my 560ti, since my 640gt is just to weak and you cannot pair a 980ti and a 560ti in windows 10 due to lag of wddm 2.0 drivers for fermi, and was i dissappointed to find out that batman AK's implementation of physx(physx FLEX) does not work with fermi or older leading to debris and smoke being disabled, while it worked perfectly fine if i used my 980ti for both rendering and physx.

Apparently any titles that makes use of the newer PhysX Flex does not support GPU accelleration on older than kepler gpus. That include but not limited to games like Killing Floor 2. So say goodbye to your older 500 series cards as dedicated physx gpu's unless your playing older title.
 
Hasn't it been the case for a while now, that the newer GPU's are actually better at running Physx accelerated titles (as well as being the primary GPU) vs having an older dedicated Physx card?

As for Arkham Knight, the lack of SLI support meant it was better to set my 2nd Titan X as 'Dedicated PhysX' whilst playing. At least it had something to do then.
 
VincentHanna said:
Hasn't it been the case for a while now, that the newer GPU's are actually better at running Physx accelerated titles (as well as being the primary GPU) vs having an older dedicated Physx card?

As for Arkham Knight, the lack of SLI support meant it was better to set my 2nd Titan X as 'Dedicated PhysX' whilst playing. At least it had something to do then.
Click to expand...

Well my sadness is not about performance but about lag of support. There are less and less reasons to even care about physx. Thankfully games like killing floor 2 runs solid at 75fps maxed out including physx flex on my 980ti but what about those peeps who may have something like a 770 or similar and happens to have an old 560 laying around.. they would benefit from that extra card yet cannot make use of it.

What i would like to know is what is new in PhysX Flex that makes it physically impossible to run on older cards? Perhaps someone with enough knowledge about the subject could enlighten me :)
 
PhysX doesnt exist in the way it did before, its part of Gameworks where these affects are used. Of course PhysX Flex is new tech but still comes under Gameworks.

PhysX still works with 500 cards or below but not Flex. Maybe the older cards take too much of a hit for it to be supported.
 
LambChop said:
PhysX doesnt exist in the way it did before, its part of Gameworks where these affects are used. Of course PhysX Flex is new tech but still comes under Gameworks.

PhysX still works with 500 cards or below but not Flex. Maybe the older cards take too much of a hit for it to be supported.
Click to expand...

Semantics?

If he said Nvidia exclusive gpu accelerated effects would that have been ok?
 
Phixsator said:
Let me start by saying i understand that sometimes you cannot make software work with older hardware. That said though at the moment physx does not need more things against it than what it has already. What do i mean?

Well i thought i would test dedicated physx performance in batman AK and since i had a win 8.1 install ready i popped in my 560ti, since my 640gt is just to weak and you cannot pair a 980ti and a 560ti in windows 10 due to lag of wddm 2.0 drivers for fermi, and was i dissappointed to find out that batman AK's implementation of physx(physx FLEX) does not work with fermi or older leading to debris and smoke being disabled, while it worked perfectly fine if i used my 980ti for both rendering and physx.

Apparently any titles that makes use of the newer PhysX Flex does not support GPU accelleration on older than kepler gpus. That include but not limited to games like Killing Floor 2. So say goodbye to your older 500 series cards as dedicated physx gpu's unless your playing older title.
Click to expand...

As someone said above, 2 SLI 980s will be crippled with the 560 as physx. Is better to use the 980s for it.

Dedicated PhyX gpu, only if you have 1 normal card, and that a 780 or so.

980s are powerful enough to handle it.

As for the phyx in general, only 50 or so games ever supported it over the last decade.
 
VincentHanna said:
The most usage my 2nd Titan X sees in Arkham Knight when set as dedicated physx (according to MSI Afterburner) was 30%
Click to expand...

Some goes for my 640 gt yet it gets hammered hard if i enable the smoke effect causing a loss in overall fps where as if i disable smoke but keep debris i actually gain 10-15% fps over just using my 980ti alone..
 
Marine-RX179 said:
+3

Why do you think they didn't optimise for Kepler/700 series and older cards for 6 months+ after they launched the GTX970/GTX980? :p
Click to expand...

Got a strange one here with the last few driver releases (359.00-359.12) mysteriously a lot of older games on most (but not all) the Kepler cards I have to hand including my 780 and several 600 series result in constant driver restarts unless knocked back to stock clocks or enabling k-boost - if I go back to any driver before 359.00 they run those games rock solid stable. I refuse to believe several cards all at once are no longer stable at anything over exactly stock clocks.
 
LambChop said:
To be fair, there's not been a bash nvidia thread for..... bout 3 days ? go for it chaps.
Click to expand...
Bashing? Hardly. They are clearly successful as a business and making a huge profit using this business model; AMD's graphic cards age too well for their own good and put the company at an awkward position taking longer to get repeat customs from people that bought their cards ;)
 
Marine-RX179 said:
Bashing? Hardly. They are clearly successful as a business and making a huge profit using this business model; AMD's graphic cards age too well for their own good and put the company at an awkward position taking longer to get repeat customs from people that bought their cards ;)
Click to expand...

+1
 
Windows 8.1 support in Arkham Knight will be gloppy at best, that aside - no where has NVIDIA recommended pairing older generation cards for dedicated support for at least 2 years. Not only is this completely in-advantageous but is a waste of time for most system configurations. PhysX performance as a whole in Arkham Knight is respectable but one cannot expect a card of that age to pair well with a 980Ti.

So those who imply that disabling implementation of Fermi support is a conscious decision would be right, but not for reasons cynical users would like to think.
 
Last edited:
It's sad that what Nvidia touts as pluses for itself are actually exactly the reasons I wouldn't buy them. What's the point of Gameworks if they completely kill your fps? or PhysX? Or worse performance over time & shorter software support? Amusingly enough gameworks games just run worse in general too, so that's another downside.

The only time you could realistically put physx on (unless you're one of the few thousands with high-end SLI) was if you either played the game many years after launch or had a dedicated physx card, which luckily could've been older and thus cheap. Now? Meh.

Alas, we'll still have to bear this situation for a few more years until things change a bit more.
 
LambChop said:
To be fair, there's not been a bash nvidia thread for..... bout 3 days ? go for it chaps.
Click to expand...

LOL

It seems that everyday is bash AMD day no matter what, with some of you.

As someone once said "They don't like it up 'em Mr Mainwaring"

:D
 
Last edited:
You must log in or register to reply here.
Back
Top Bottom