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Titan X PCIe 3.0 16x vs 8x

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Evoly
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Thursday, April 02, 2015 9:41 PM (permalink)
Hey there!
 
Anyone experiences with the performance difference on the Titan X? I'm playing around with a backplate and since I can get a Arctic backplate with all the mounting stuff included aswell as the compatible holes, for the same price like a EKWB backplate without mounting holes I'm curious how huge the difference is.
 
(On a Asus Rampage V extreme the 1. PCI slot wont be usable for me with the Arctic backplate. 
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    txfeinbergs
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    Re: Titan X PCIe 3.0 16x vs 8x Thursday, April 02, 2015 10:17 PM (permalink)
    There is really no difference at all until you start getting into the 3 card range. This was based on a Maximum PC article from last year where they actually tested it. Currently I have my Titan X as my only card in my system, so I am running 16x. Prior to that I had 780 SLI, so each card was running 8x.
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    Evoly
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    Re: Titan X PCIe 3.0 16x vs 8x Thursday, April 02, 2015 10:19 PM (permalink)
    On overclock.net I actually could read that the Titan X seems to drain the PCIe 16x bandwidth pretty hard, thats why I'm looking for a benchmark or something like this.
    Internet is full of people talking stuff. I just saw comparisons about 16x and 8x with the 980 and there I can just agree. Difference is nearly nothing but since I don't really know what the "bandwidth" is for I could for example imagine that the bigger Memory bus could make use of 16x compared to 8x but as I mentioned, I have no damn clue.
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    vdeckerv
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    Re: Titan X PCIe 3.0 16x vs 8x Thursday, April 02, 2015 10:24 PM (permalink)
    With a single card configuration you will not see any fps loss between 16x and 8x, even with the titan x. With dual SLI you will most likely see a 1-2 fps deviation between 16x and 8x (highly unlikely to see anymore than +/- 1fps)
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    Evoly
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    Re: Titan X PCIe 3.0 16x vs 8x Friday, April 03, 2015 1:18 AM (permalink)
    Is there any way to see how much of the PCIe 3.0 speed the Titan X does "need"? I don't want to bottleneck my Titan due to the slower PCIe slot. 
     
    Reason why I ask is, that NVIDIA says PCIe 3.0 on there website for the Titan X. That has to mean 16x otherwise they could have sayd PCIe 2.0 16x / PCIe 3.0. Since 3.0 8x = 2.0 16x. 
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