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Old 04-15-10, 09:00 PM   #13
turdhat
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Default Re: 2nd card still needed with 480 for Physx ?

Very here is what I found.

I only used Fluid Mark, Batman and the rocketsled demo because I dont have time for much else.

No numbers just observations. Sorry.

Batman for me has a slower minimum FPS that with my 280/8800gt combo. Dont know why and not really worried. I think it is a driver issue because Fluidmark runs twice as fast with the 480 doing all the work. Switching to the 8800gt cuts the Fluidmark score in half.

Rocketsled demo ran about the same but has some stutters. I will try Cryostasis when I have more time.
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Old 04-15-10, 09:02 PM   #14
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Default Re: 2nd card still needed with 480 for Physx ?

There is a patch for Batman for use with the 480\470.

http://www.nzone.com/object/nzone_ba...downloads.html
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Old 04-16-10, 12:08 AM   #15
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Default Re: 2nd card still needed with 480 for Physx ?

I'm glad that currently it seems that the 480 isn't really benefiting from a PhysX GPU offload, as I'm not really sure that my 1050W could handle both my GTX 480s and a 9600 GT as well.
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Old 04-16-10, 12:21 AM   #16
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Default Re: 2nd card still needed with 480 for Physx ?

One of the reason for 480 to do so good in comparison is better state change handling between graphics and gpgpu.
280 most likely twidled it's thumbs for a while every time this happened, so physics had quite big impact in performance.
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Old 04-16-10, 12:56 AM   #17
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Default Re: 2nd card still needed with 480 for Physx ?

Quote:
Originally Posted by jlippo View Post
One of the reason for 480 to do so good in comparison is better state change handling between graphics and gpgpu.
280 most likely twidled it's thumbs for a while every time this happened, so physics had quite big impact in performance.
How are you guys drawing this conclusion? I'm getting much better results with a single 5870 + a 9800GT than the guy with the 480 +240.

Max @ 1920x1200, Physx-Max, 4XAA



Keep in mind 4X AA has much bigger impact on performance for ATI cards in this game.

I think the 240 is just so slow at Physx that it doesn't make much of a difference for the 480 GTX.
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Old 04-16-10, 01:16 AM   #18
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Default Re: 2nd card still needed with 480 for Physx ?

Crossfire results, in case anyone is interested. Scaling is not too impressive in this game but it can be seen that Physx isn't the bottleneck in this game.

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Old 04-16-10, 02:57 AM   #19
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Default Re: 2nd card still needed with 480 for Physx ?

Quote:
Originally Posted by CaptNKILL View Post
There is a patch for Batman for use with the 480\470.

http://www.nzone.com/object/nzone_ba...downloads.html
Maybe that is why this guys Batman numbers with the 240 are so bad?
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Old 04-16-10, 08:04 AM   #20
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Default Re: 2nd card still needed with 480 for Physx ?

Quote:
Originally Posted by Bah! View Post
Maybe that is why this guys Batman numbers with the 240 are so bad?
No, I patched it. Minimum fps is lower. Used to be 60 fps 98% of the time with all maxed, 4xaa and physx on high at 1080p with my old combo of 280/8800gt. I think the drivers need to mature. Someone posted Dirt 2 stuff but Dirt 2 is not a physx game.

edit: 240 ? Oh thats not me. Still my batman number went south a bit.
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Old 04-16-10, 10:30 AM   #21
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Default Re: 2nd card still needed with 480 for Physx ?

Turns out that I was right. Off-loading to a 240 for Physx doesn't do much for a 480 because the 240 is just too slow.

Otoh, a 275 + 8800 GT makes the 275 faster than a 480 by itself. Without the 8800 for Physx, the 275 is significantly slower than a 480, as expected. So the results are pretty much in line with what I expected, which is that even a 480 can benefit substantially from offloading Physx to another card.

http://www.overclock.net/nvidia/7116...ml#post9058698
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Old 04-16-10, 12:57 PM   #22
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Default Re: 2nd card still needed with 480 for Physx ?

Quote:
Originally Posted by brunner View Post
How are you guys drawing this conclusion? I'm getting much better results with a single 5870 + a 9800GT than the guy with the 480 +240.
I'm pretty sure that the state change doesn't happen when using one card just for a physx.
Also things like AA and resolution shouldn't affect that much either.
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