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PCI 2.0 x16 Bandwidth/Bottleneck?

Tags:
  • Memory
  • Bandwidth
  • PCI
  • Graphics
  • Gtx
  • Bottleneck
Last response: in Graphics & Displays
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July 2, 2013 3:32:29 PM

Hi, am I right in saying that the GTX 770 with a memory speed of 7.0 Gbps will not be bottlenecked by a PCI 2.0 x16 slot because it has 8 Gbps bandwidth?

GTX 770: http://www.geforce.co.uk/hardware/desktop-gpus/geforce-...


Here is my source: http://www.hardwaresecrets.com/article/Everything-You-N...

Regards

More about : pci x16 bandwidth bottleneck

a b } Memory
July 2, 2013 3:33:33 PM

Yes, you are right. :) 
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a b } Memory
July 2, 2013 3:40:04 PM

No, you will see no bottleneck. PCIe 2.0 x16 has 8GB/s, not 8Gbps. Even if it was only 8Gbps, there would be no noticeable performance hit.
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July 2, 2013 3:40:30 PM

dannyboy2233 said:
Yes, you are right. :) 


Actually I was confused because there was conflicting information from this post I read previously:

http://www.tomshardware.com/answers/id-1717219/gtx-760-...

The best solution answer said it had to do with the clock of the PCI 2.0 x16 being 5GHZ therefore there would be a bottleneck because the GTX 770 has a memory speed of 7GHZ.

Are you right or is the poster right?

Thank you :) 
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July 2, 2013 3:41:31 PM

expl0itfinder said:
No, you will see no bottleneck. PCIe 2.0 x16 has 8GB/s, not 8Gbps. Even if it was only 8Gbps, there would be no noticeable performance hit.


Actually I was confused because there was conflicting information from this post I read previously:

http://www.tomshardware.com/answers/id-1717219/gtx-760-...

The best solution answer said it had to do with the clock of the PCI 2.0 x16 being 5GHZ therefore there would be a bottleneck because the GTX 770 has a memory speed of 7GHZ.

Are you right or is the poster right?

Thank you
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a b } Memory
July 2, 2013 3:42:25 PM

There may be a theoretical bottleneck, but like I said, you won't notice it.
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Best solution

July 2, 2013 3:57:59 PM

I might be the one that send you that link before (I'm almost certain, as I use it alot on these forums) and yes, even though some people still will say no and whole hearted believe that it isn't bottlenecking, then there is a bottleneck and even though it not might be a big impact or an impact at all on your average usage, then it will still be there. People using PCI-E 3.0 x16 with an almost similar configuration as you will have better performance in gaming. Simple as that.
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