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will a GTS250 hurt physX?

post #1 of 5
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ive heard that a GTS250 or 9800GTX+ will make a GTX480 perform worse in physX games. since a GTX480 has 480 CUDA cores, my rig is similar.

so would i loose performance with my GTX275 SLi and using GTS250 as a dedicated physX card?
    
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post #2 of 5
Thread Starter 
...
some1 plz reply
    
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post #3 of 5
I wouldn't think it could possibly hurt performance. The only considerations for a possible degredation in performance would be if:
You're power supply couldn't supply enough power to all the components and they were not performing to their full potential, or if the components were getting too hot (especially the VRM's) and trying lower clocks or voltage to prevent damage to the cards. Thats not a great explanation, but essentially I can't see how it could degrade performance. The only way that seems feasible would be if you used a card such as a gt 220 which is not fit enough to really be a physx card. A gts 250 seems like a more than capable card seeing as how the best performance out of physx can be seen with a gtx 275 according to the benchmarks which I have seen.
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post #4 of 5
No, it won't hurt performance
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post #5 of 5
Adding a GTS250 as a Physx card to help GTX275 SLI is a good idea.

Look at these graphs and you will understand better:
http://www.hardwareheaven.com/articl...d=138&pageid=4
(see how a relatively lower end card helps out a higher end card(s) like yours)

And: http://www.overclock.net/nvidia/9077...gtx-580-a.html
(pay attention to my post #8, both the graph and the link)
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