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Old 04-13-10, 01:36 PM   #37
brunner
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Default Re: Good card for Physx?

I've used a 9800 GT, 8800 GTX and 280 GTX for physx. There were no differences in performance so I chose the 9800 GT because it's quieter and cooler.
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Old 04-26-10, 09:35 PM   #38
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Default Re: Good card for Physx?

I think I found a nearly perfect Physx card...

http://www.planetbargains.com/news_d...mpb.cfm/206283

Normally, the price of this card would make it not such a great buy, but for only $90 (no mail in rebate, no tax, no shipping), how can you go wrong with a low profile GTS 250?

The clocks are lower and its probably a little hot and noisy under full load, but as a physx card it'll rarely be running full tilt and it probably clocks down quite well.

For that price I'd considering fitting it with a cheap after market cooler to allow for some shader overclocking to improve Physx performance.

I wonder if you could actually lower the core and memory clocks while increasing the shader clock to improve Physx\CUDA performance without increasing temperatures.

I can't wait to get my mits on this little thing.
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Old 04-26-10, 10:55 PM   #39
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Default Re: Good card for Physx?

That's interesting.

Having used a nearly identical card (lets face it, my 9800 gtx is pretty much the same thing), I can definitely say its a powerful card, probably beyond the needs of most physx users.... but that's ok I use mine a bit for F@H and other CUDA things so the power definetly doesn't go to waste

Just a forewarning though.... most 8800 GTS / GTX / GT cards and their upwardly powerful equivalents are more than enough. If you have a deal on a 8800 gts 320mb for a cheap bargain i'd definitely take that
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Old 04-27-10, 05:29 AM   #40
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Default Re: Good card for Physx?

The 8800GTS G80s are far inferior to the G92 cards. The clocks are much lower and they only have 96SPs. If the "GFLOPS" is anything to go by when determining CUDA\Physx speed, an 8800GT is about 25% better than an 8800GTS 320\640, and it'll be smaller, cooler and less power hungry (especially at idle... the G80s didn't idle very well).

That low profile GTS 250 should be quite efficient compared to the others due to its smaller size. I really think its just about the best thing you can get for Physx. As others have shown, a GT 240 just isn't enough to help newer cards like the 480, and that is actually quite similar in performance to the old G80 GTS cards. I think a 250 is the sweet spot currently.
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Old 04-28-10, 10:28 AM   #41
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Default Re: Good card for Physx?

Watching the GPU usage of my GT-240 using EVGA's monitoring tool while playing Physx games the card is only using about 8-10% of it's capabilities. Unless I'm missing something I don't see how having a more powerful card will do much more.
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Old 04-28-10, 03:49 PM   #42
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Default Re: Good card for Physx?

The GPU usage probably takes everything into account, such as fill rate and memory bandwidth usage. Since Physx shouldn't use most of what these cards have to offer (just the shader processors mostly) that could explain the low usage.

Or the monitor could just not be that accurate for another reason. Measuring CPU usage isn't really cut and dry either. 100% usage running prime95 is much different than 100% running linpack torture test.

There are also benchmarks floating around that show some games running better with cards faster than a 9800GT for dedicated Physx.
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Old 04-29-10, 12:38 AM   #43
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Default Re: Good card for Physx?

Quote:
Originally Posted by CaptNKILL View Post
The GPU usage probably takes everything into account, such as fill rate and memory bandwidth usage. Since Physx shouldn't use most of what these cards have to offer (just the shader processors mostly) that could explain the low usage.

Or the monitor could just not be that accurate for another reason. Measuring CPU usage isn't really cut and dry either. 100% usage running prime95 is much different than 100% running linpack torture test.

There are also benchmarks floating around that show some games running better with cards faster than a 9800GT for dedicated Physx.
True story.... the gpu usage doesn't really mean anything. Just because x game and y game both run at 100% cpu useage doesn't mean either are necessarily being limited by the cpu, or run at the same performance level either.

Benchmark a game and go by the numbers if you want something solid. I have never had the chance to take a look at much more than this 9800 GTX but I did use an 8600 GT for a short period of time and it was absolutely horrible.... crippled gameplay in cryostasis
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Old 04-29-10, 01:57 PM   #44
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Default Re: Good card for Physx?

Quote:
Originally Posted by CaptNKILL View Post
I'd like to see four cards benchmarked as dedicated Physx cards:

GT240
9800 GT
GTS 250
GTX 260

Preferably running along side a 5870.
i have a 5870 and 8800 GTX for physx, i'll see if can do some benches (i have to install all the games since i re-installed Windows 7 on a new SSD), but i am limited now to 1280*1024 (still on my old monitor)
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Old 04-29-10, 06:23 PM   #45
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Default Re: Good card for Physx?

Well I got my low profile Sparkle GTS 250 1Gb today. Its so tiny! The box the card came in is only a little larger than my GTX 260 itself. I wish the cooler was single-slot width, but its not bad at all.

What are some good Physx benchmarks that I can use to test this thing out? I plan on tinkering with clock speeds and such to find the optimal physx speed\temperature balance.
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Old 04-29-10, 06:48 PM   #46
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Default Re: Good card for Physx?

Batman AA all settings max at 1280*1024
PhysX on High
min 46
max 134
av 94

PhysX off
min 92
max 182
avr 148
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Old 04-29-10, 07:12 PM   #47
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Default Re: Good card for Physx?

Well I just put the card in.

First impression is that it fits beautifully in my cramped case... the small size is a godsend after trying to cram a dual slot 9600GT in this same area. Also, I can't hear it when its idling and evga Precision reports that its idling at 45C. So, it isn't putting out too much extra heat in my system... especially considering how small the heat sink is.

I'm currently downloading the latest nvidia drivers since I'm pretty far behind. I'm also downloading the "Star Tales" Physx benchmark from nvidia, and I'm installing Cryostasis.

... multitasking FTW.
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Old 04-29-10, 07:42 PM   #48
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Default Re: Good card for Physx?

I started a thread for testing my new card here:

http://www.nvnews.net/vbulletin/show...29#post2242729
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