Dedicated PhysX GPU

[Merackon]

Hi,

 

Seen as I play PlanetSide 2 an awful lot, and have become so used to the AWESOME PhysX animations that the game has to offer that I can't live without them, I was considering getting a GPU so that I can dedicate it to PhysX. My current system specs are:

i5 3570k

Vengeance 1600 8GB

Samsung 840 250GB

EVGA GTX670 FTW SIG2

Corsair CX600M

And some other unnecessary to note stuff

 

I have narrowed the choice down to a 640, 650 or 650Ti (by EVGA that is)

 

Which one of these cards would be better for the task?

 

And

 

Would getting a higher GDDR version of it benefit the performance of it when it is serving in its PhysX capacity?

 

Thanks in advance,

 

Jack

[Godlygamer23]

I'm not sure how much it'd be worth, but I'd say 640. PhysX isn't too taxing.

[LapX]

Linus made the test. It seems that getting a lower end card dedicated to physx will lower your framerates. Don't buy a dedicated PhysX GPU. If the performance does not satisfy you, just wait to get more money and sli your gtx 670.

[Godlygamer23]

Linus made the test. It seems that getting a lower end card dedicated to physx will lower your framerates.

I had done that in the past. My FPS increased.

[swifty7]

I also have a gtx 670 ftw edition and also a gtx 460 as well. Is the gtx 460 good enough to be used as a dedicated phys x gpu?

 

but the problem with using a dedicated gpu for physX is the reduction of  pci-e's 16x lane to 8x.

[extremescouter]

I would also say go for the 640,  and save some money. 

[LapX]

I had done that in the past. My FPS increased.

Maybe I'm wrong, it's been a while that I haven't watch this video and I never tried it. But that's what I was remembering.

[Godlygamer23]

Maybe I'm wrong, it's been a while that I haven't watch this video and I never tried it. But that's what I was remembering.

Perhaps certain titles. I tested Arkham City.

[LimeDk]

I also have a gtx 670 ftw edition and also a gtx 460 as well. Is the gtx 460 good enough to be used as a dedicated phys x gpu?

hmm not sure but try it out can't hurt anything by trying it out (=

[TechFan@ic]

I would've thought a 670 is enough for PhysX in planetside 2, why do you want a dedicated PhysX card ?

Does your FPS drop too much in Planetside 2 with PhysX enabled ?

[Godlygamer23]

I would've thought a 670 is enough for PhysX in planetside 2, why do you want a dedicated PhysX card ?

Planetside 2 gets pretty intense. FPS can dip badly. Relieving the 670 of PhysX may increase FPS.

[TechFan@ic]

Planetside 2 gets pretty intense. FPS can dip badly. Relieving the 670 of PhysX may increase FPS.

I would save up & get a 770 then, I doubt a low end dedicated PhysX card would improve performance at all or enough.

[Godlygamer23]

I would save up & get a 770 then, I doubt a low end dedicated PhysX card would improve performance at all or enough.

I doubt it too. Upgrading the 670 would be better.

[Eddyall]

The best idea for a PhysX card is to use you previous card.

Buying a dedicated card at the moment is really worth it as not a lot of (any?) developer are ready to cut of a portion of costumer based on their video card.

But since a lot of person are saying that in Planetside's FPS go down than what you could do is buy a 650 and wait for a "760/Ti".

 

Edit: Nevermind you already have a computer, I misread that you were going to build a computer.

[TechFan@ic]

I doubt it too. Upgrading the 670 would be better.

It would make more sense if you think about it, because it will improve performance across the board not just in games with PhysX.

[Blew]

I also have a gtx 670 ftw edition and also a gtx 460 as well. Is the gtx 460 good enough to be used as a dedicated phys x gpu?

 

but the problem with using a dedicated gpu for physX is the reduction of  pci-e's 16x lane to 8x.

A 460 is enough seeing as though i have the same setup. I saw a performance increase with 670 and a 460 for physX.

[Eddyall]

Something else you could do is have a secondary monitor plug in the dedicated PhysX card, that way it won't take up resource from the main card.

[TechFan@ic]

A 460 is enough seeing as though i have the same setup. I saw a performance increase with 670 and a 460 for physX.

That would be really pushing his 600W power supply, I wouldn't recommend it.

[Bluejay0]

Can you use a phsx card without sli?

[Godlygamer23]

Can you use a phsx card without sli?

Yes. Dedicated PhysX cards are completely separate from SLI. You could put a PhysX card in a PCI-E 4x slot if you wanted to.

[Eddyall]

Can you use a phsx card without sli?

 

Yes, it idea is that you split the task for the cards, PhysX for one and video for the other, but you could have 2 card in SLI and another one for PhysX.

But at that point it just make more sense to go 3 Way SLI.

But I wonder what happens at 3-Way+PhysX vs 4Way.

[Eddyall]

Yes. Dedicated PhysX cards are completely separate from SLI. You could put a PhysX card in a PCI-E 4x slot if you wanted to.

 

The PCI-e speed doesn't matter in compatibility, it just bottleneck the speed.

[Godlygamer23]

The PCI-e speed doesn't matter in compatibility, it just bottleneck the speed.

PhysX doesn't use that much bandwidth. The card wouldn't saturate the slot AFAIK.

[Eddyall]

Probably, Linus did a video on PCI-e speed for 590/6990 and you get like .8 FPS difference between 2.0 16x 8x and 4x. (So margin of error)

 

Problem with this setup is that no one is really benchmarking this kind of setup.

[Godlygamer23]

And it's probably just not worth it. Be better just to upgrade to a better video card.