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Performance loss GTX285 PCI-E 8x?

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  #1  
Old 04-04-2009
K88 K88 is offline
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Performance loss GTX285 PCI-E 8x?
  

Hello,
i have Asus P5Q-E with GTX285 2GB, Since the motherboard does not have two-lane x16 support, but both cards with PCI-express 8x bind, I wanted to ask how much the loss of performance if GTX 285 individually connected via PCI-Express x16.Any recommendations and suggestions are appreciated.

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  #2  
Old 04-04-2009
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Re: Performance loss GTX285 PCI-E 8x?

Since it is PCIe 2.0 slots, it should not be the collapse of relevance, especially since your card is also 2GB memory.
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  #3  
Old 04-04-2009
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Re: Performance loss GTX285 PCI-E 8x?

hi,
turn on the old thing away, the calculation makes The 285 in passing.

So besides my SLI also runs 16 / 8 and zero loss to 16/16.
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  #4  
Old 04-04-2009
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Re: Performance loss GTX285 PCI-E 8x?

Quote:
i have Asus P5Q-E with GTX285 2GB, Since the motherboard does not have two-lane x16 support, but both cards with PCI-express 8x bind, I wanted to ask how much the loss of performance if GTX 285 individually connected via PCI-Express x16.Any recommendations and suggestions are appreciated.
Sure that GTX285 running only with 8-lane,I think in the manual but not the 1 st PCXe16 to 8-lane left behind when a 2 nd Card uses.
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  #5  
Old 04-04-2009
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Re: Performance loss GTX285 PCI-E 8x?

Textures that do not fit in the VRAM, must have the PCIe interface from the main memory. This does not apply to a video card with 2 GB of VRAM, because no game with so much memory. The geometry data that the CPU or the second graphics card (PhysX) has pre-processed, but must remain on the PCIe interface. And of course this amount of data is manageable.


If you have a little time, you can indeed make the comparison:
  • Non-PhysX application (eg GTA IV): GTX 285 on PCIe x16, 8800 GT is not built
  • Non-PhysX application (eg GTA IV): the two cards and built-in PCIe x8
  • PhysX application (eg Cryostasis): GTX 285 on PCIe x16, 8800 GT is not built
  • PhysX application (eg Cryostasis): both cards and built-in PCIe x8
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