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  #21 (permalink)  
Old May 10, 2009, 04:22 PM
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Cuda is useless unless you plan to run cuda apps.Physx is laughable in it current implementation,if and when devs start actually using it maybe consumers can upgrade it from marketing fluff status.Might as well fire dx10.1 into that same fluff bin,without support from both gpu makers devs just don't wanna spend time writing code for one brand.
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  #22 (permalink)  
Old May 10, 2009, 11:23 PM
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What is the difference between pcie 2.0 and pcie2.0 x 16

I have an asus p6b deluxemb and im noticing that alot of the cards are saying 2.0x16 instead of just pcie2.0.
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  #23 (permalink)  
Old May 11, 2009, 05:12 AM
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2.0 is a standard and x1/x4/x8/x16 is the speed at which the video card communicates via PCIe.

Contrary to the previous posters statement, it is not up to ATi to support nVidia's physx (proprietary) physics solution. No more than it is up to nVidia to support ATi's physics solution (Stream).

ATi is opening up it's implementation on OpenCL/Havok which both cards support. nVidia's (failed imo) strategy is to impliment CUDA and get developers to support that physics solution thus aleinating those with ATi cards. Conversly, ATi tried this with DX 10.1. Both ideas (marketing stratagies) were/are epic failures imo.

Niether physx nor DX 10.1 have been used to thier full potential and game companies play to the highest bidder it seems. For a good example of this you only need to look at Ubisofts removal of and refusal to fix DX 10.1 in thier Assassins Creed title.

Or the inclusion of Physx in games like mirrors edge. When implemented properly physics is a good thing. But when it's implementation goes to the extreme (tech demo) and becomes the focus of the game rather than the game itself it becomes an annoying distraction. Here is a good read on some of the good, bad and ugly of it.

Last edited by IRQ Conflict; May 11, 2009 at 07:02 AM.
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Old May 11, 2009, 06:49 AM
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Thanks for that article, it cleared up a lot for me.

As fore the 2.0x16 issue, i shouldnt have any issue with my motherboard and either of those cards right?
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Old May 11, 2009, 06:57 AM
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PCIe 2.0 is the latest version of PCIe. 16x is the fastest. So, no you won't have any issues running it. Some older boards split the difference an you have 8x/8x like on my i975XBX2. But even then I doubt I could saturate it with the X1950 Pro's that are installed on it. Some sites have looked into it and found a decrease in performance on none but the highest end cards on the highest resolutions. I assume that you meant you have a P5B Deluxe.

EDIT: iirc it only supports x4 on the second slot so running two cards in crossfire is not recommended. But a single card will be fine.

Last edited by IRQ Conflict; May 11, 2009 at 07:06 AM.
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Old May 11, 2009, 06:59 AM
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Quote:
Originally Posted by IRQ Conflict View Post
PCIe 2.0 is the latest version of PCIe. 16x is the fastest. So, no you won't have any issues running it. Some older boards split the difference an you have 8x/8x like on my i975XBX2. But even then I doubt I could saturate it with the X1950 Pro's that are installed on it. Some sites have looked into it and found a decrease in performance on none but the highest end cards. I assume that you menat you have a P5B Deluxe.
Yes i have the p5bdeluxe wi/fi edition.
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  #27 (permalink)  
Old May 11, 2009, 07:00 AM
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see edited post above.
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  #28 (permalink)  
Old May 11, 2009, 07:02 AM
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Quote:
Originally Posted by IRQ Conflict View Post
see edited post above.

Thanks for the help, i dont plan on running crossfire anyway, so thats one headache passed on.

And as for the physx , cuda vs dx10.1 thing, i just decided to get teh gtx 260x216 the card seems to be priced a bit cheaper then the 4870.
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  #29 (permalink)  
Old May 11, 2009, 07:07 AM
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Either is a good choice imo. And the nVidia card should fold like the Dickens! Thumbs up!
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