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Mafia 2 low GPU usage 40-70%

post #1 of 8
Thread Starter 
While running the Mafia 2 benchmark I have gotten a total score of 40.4fps (everything maxed and Apex set to high) ..I thought maybe I would be getting a bit more..I checked evga precision and it the gpu usage graph barely broke into 70% (peaked at 70%)..the second gpu never got over 50%...otherwise it's fair to say it stayed between 40-70%

I think this is not right, because other games show full gpu usage. For example when I am running BC2 my gpu usage is always over 90% never goes below that and it's mostly in 98% area.

Help?
    
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post #2 of 8
If you are playing with physx high, its most likely the cause.
Its using the CPU alot as long as you don't use a dedicated card.
This means that your GPUs have to wait for the cpu, meaning its bottle necking you because of the high physx.

Did you notice the high CPU usage in the benchmark?
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post #3 of 8
Use one of ur 465s as a dedicated PhysX card.
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post #4 of 8
He will get way worse fps by disabling the SLI.
I would say just bump down the physx.
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post #5 of 8

.


Edited by ironman86 - 3/21/12 at 11:00am
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post #6 of 8
Thread Starter 
Ah! I see..I disabled SLI and set the second card for PhysX and the results were 2fps worse..the GPU usage was over 90%..so I understand now..
The hardware to run this game maxed with physx set to high at 60fps is absolutely ridiculous.
    
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post #7 of 8
1 card + dedicated physx < SLI with physx on.
I already said that.

Mafia 2 works like this:

1. Dedicated card = everything is calculated on that card. cloth and particles physx.
2. One card or SLI = only particles are calculated on the card, and cloth is on the CPU.

As the physx calculations are very light on the 465 (barely touch its potential), its a total waste going for a single card + dedicated over SLI.
A single 465 can't go all on high.

If you want good performance, without dedicated card, always go for physx below high.
That way you will have good performance, particles physx is still on, and the main chars will have physx on their cloths.
You will just not have cloths physx on other chars.
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post #8 of 8
so w8 the i7 950 is bottlenicking in mafia 2 with 2x 465 sli?

so what will my fps be ig i get my i7 760 and a 460? 1gb
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