Dedicated Physx thread

[Nevakonaza]

Okay so i got my rig up and running now,GTX 460 (overclocked) + a 8800GT (stock) for Dedicated Physx,I enabled the 8800GT as dedicated Physx in the Nvidia Control panel and all is well,I tried it out on Mafia 2 with Apex Physx enabled and on High.

However watching both my Gpus activity in Msi Afterburner my 460 is doing about 86% activity,and the 8800GT is only doing about 5% activity...does this not seem right?..im also getting occasional random lag during the gameplay which lasts a few seconds then returns to normal...fps is around 60fps..something does not seem right.

Physx is working,because theres a lot more detail in the game,Screens below...there was not this much debris with no Physx card.

I ran 3D Mark 06 with my system all stock with the 460 only,Then i ran 3D Mark 06 with the 8800GT as Physx,again system all stock and my score actually went down by 3 marks

My system specs:

Core i7 860 @ Stock atm
Cool IT ECO A.L.C Push/Pull
Gigabyte GA-P55-US3L
4GB G-Skill Ripjaws 1600Mhz CL7(7-8-7-24)
GTX 460 + 8800GT Dedicated Physx
OCZ Vertex 2 60Gb SSD | 500+250Gb Hard Drives
Asus Xonar D1 Sound Card
OCZ StealthXStream 600W Modular
Coolermaster CM690 (Window Modded)
Windows 7 Home Premium X64 Bit.

 

[Rroff]

Make sure the 8800GT is selected as the PhysX card in the control panel.

3D Marks 06 score will vary by about 2-3% every time you run it a change of 3 is nothing.

 

[Nevakonaza]

Hi,hmm i did say i had already selected the 8800 as PhysX card in the control panel.

 

[dougie06n]

i am hoping to do this with my 9800gtx when my 570 arrives but as someone said i will try it and see if it does not make any inprovment i will just use the one card

 

[Rroff]

Make sure it is still selected as the PhysX device - sometimes after rebooting the first time it will default back to device 1. You should be seeing more like 20-30% GPU useage on the PhysX card.

 

[pingu666]

i had some random slow downs when i used a second card for physx, but i was using a ati 4870 as the main card, so could have been that

 

[Nevakonaza]

Right here the Arkham Asylum bench...This game runs very smooth,No lag like in Mafia 2 (I think Vsync was on)

All settings maxed @ 1680x1050 -Physx HIGH.

GTX 460 alone (Doing rendering + Physx)

GTX 460 (Rendering) + 8800 (Physx)

Looks to me like the 8800 is holding back slightly.

ive noticed though now,In Mafia 2 it only lags at the start when i move its jerky...then after a few seconds its fine.