Does a pcie riser card increase latency?

Hardware Hub GPU
1

Hi guys,

I am planning to do a compact gaming build. And I was planning to use one of these http://www.ebay.com/itm/16X-Slot-Powered-Riser-Cable-PCI-E-Express-Extender-Adapter-Riser-Graphics-Card-/121130792584

It should run a gtx 580 on its side to keep the build more compact. Now I wanted to know does the increase in cable length affect performance or latency? I mean increasing the cable length means increasing the travel time for the signals right? Or is the speed at which these signals travel so high it doesn't have an effect?

 

2

No.

3

no.  It's a direct electrical connection.  There's really no components in between to process data and create lag.  basically an extension cable.

4

True but if you increase the cable length you also increase the signal travel time right? I know we are talking nano seconds here but doesn't that make a difference since cards run at extremely high herz?

5

if you consider picoseconds as a latency issue.

6

well, sure... if you want to get on the nanoscale of electrical physics...then yeah there will be latency.  The riser will not affect performance.  

7

What I meant was if the gpu and cpu send info back and forth those pico seconds quickly stack up for each herz. But I guess the information only flows one way, I didn't know that.

8

you do realize I was being facetious? No, there will be no latency, since compared to the speed of light (approx. 3*10^8 m/s), an additional two inches of travel distance is really unimportant in the grand scheme of latency.