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Running Dedicated PPU for Last Light

post #1 of 6
Thread Starter 
I read that Metro Last Light advanced physics options kills systems, and drops FPS considerably to the point some people are go so far as to getting GTX650s for dedicated PhysX cards. Anyone who has done that, have you actually noticed a boost in performance or is it not worth it?
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post #2 of 6
having a sufficient physX card will help. i have a theory the card will need 15% - 20% of the cuda cores (edit: of the same arch) that are in the rendering gpu.
with the 780 in your rig specs having 2304 a 650 with 384 ought to be just enough. (384/2304=16.6%)

it may not give a substantial raise in your avg/max fps but it will make a difference in the min. for smoother game play.
Edited by looniam - 7/17/13 at 8:39pm
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post #3 of 6
You should be fine with only a single high end card I know with my 690 @1080p I often get 90fps or higher even with physx on so I doubt the 780 would be strugging

So yeah not worth it.

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post #4 of 6
Thread Starter 
Quote:
Originally Posted by noob.deagle View Post

You should be fine with only a single high end card I know with my 690 @1080p I often get 90fps or higher even with physx on so I doubt the 780 would be strugging

So yeah not worth it.

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I got 37fps in the benchmark fully maxed with Advanced physics.
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post #5 of 6
Quote:
Originally Posted by MxPhenom 216 View Post


I got 37fps in the benchmark fully maxed with Advanced physics.

IDK, you may have a problem other than physX . . but here is a good thread benching 680. 680 SLI and a 690 with different physX cards:
680 + physx bench granted it is a year old though what stands out is THIS POST: CLICK ME! (Click to show)
Quote:
Metro 2033
Settings: Built in becnhmark tool, Frontline. Direct X 11, Resolution: See bench, Qual: Very High, AA AAA, Texture Filt AF 4X, Enable Advance PhysX, DX 11 Tesselation and DOF enabled

1920x1080

GTX 690 PhysX OFF
Avg: 69.97
Max: 337
Min: 10.14

GTX 690 Advance PhysX On
Avg: 53
Max: 295
min: 2.05

GTX 690 w/ 550ti PhysX
avg: 69
Max 305
min 11

2560x1440

GTX 690 PhysX off
Avg: 42
Max: 211.28
Min: 13.44

GTX 690 w/ 550Ti PhysX
Avg: 41.67
Max: 219.93
Min: 9.94

also, its as or more important of what the core speed is as the core count comparing a slower 480 to a 550ti: ANOTHER CLICK ME! (Click to show)
Quote:
Metro 2033
Settings: Built in becnhmark tool, Frontline. Direct X 11, Resolution: See bench, Qual: Very High, AA AAA, Texture Filt AF 4X, Enable Advance PhysX, DX 11 Tesselation and DOF enabled

1920x1080

GTX 690 w/ 550ti PhysX
avg: 69
Max 305
min 11

GTX 690 w/ GTX 480 PhysX
avg: 66.67
Max 271.96
min 9.77

but, what is the difference in the benchmark with physX off compared to on? if it's still low then you may need to look at something else . .
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by looniam View Post

IDK, you may have a problem other than physX . . but here is a good thread benching 680. 680 SLI and a 690 with different physX cards:
680 + physx bench granted it is a year old though what stands out is THIS POST: CLICK ME! (Click to show)

also, its as or more important of what the core speed is as the core count comparing a slower 480 to a 550ti: ANOTHER CLICK ME! (Click to show)

but, what is the difference in the benchmark with physX off compared to on? if it's still low then you may need to look at something else . .

Yeah probably some other problem haha. I will be doing a clean windows install here in a few days when I upgrade to Haswell so.
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