Is performance issues in Odyssey related to PCIe lanes??

[Koyaa]

I went from using a 8x to a 16x socket for my video card and got a MASSIVE fps boost. So are all our problems PCIe related?? Try turning your PCIe port to 8x and see if you get a performance hit. I think Odysseys wants MORE than 16x lanes to a video card but nobody has a motherboard and card that can handle that so everyone is having the SAME problem..And high end computers running high speed IO off the PCIe ports will have even more problems. I think this is why lower end computers have similar performance at times.

 

[STRONTIUM DOG]

in a nutshell yes as new gpu's get ever more power lanes \threads gpu pipelines ect they exceed older mobo's capacity to handle the flow and may even bottleneck a wee tad would be my conclusion
getting the right mobo for your new gfx card is always worth checking what your existing PCIe slot can handle bandwidth wise
but the keyword here is you wont know with this game as it is currently not fully gpu optimized yet (due console release time)
meaning the code flows inefficiently through the rendering pipelines or has mem leaks ect atm

 

[Darth Ender]

I went from using a 8x to a 16x socket for my video card and got a MASSIVE fps boost. So are all our problems PCIe related?? Try turning your PCIe port to 8x and see if you get a performance hit. I think Odysseys wants MORE than 16x lanes to a video card but nobody has a motherboard and card that can handle that so everyone is having the SAME problem..And high end computers running high speed IO off the PCIe ports will have even more problems. I think this is why lower end computers have similar performance at times.

games dont dictate pci lanes. pci lanes are just a means of bandwidth access. entirely transparent to applications running in the OS. More lanes == more bandwidth. more is always better here for applications that are io heavy.

the caveat to that is if the pci lanes are being provided by a bridge chip on the motherboard or by the actual cpu. The bridge chip will not be as performant as direct cpu pci lanes. You have to reference your motherboard manual to determine which you have.

 

[GroG79]

This is a highly unlikely thesis. The behaviour you noticed must have a different cause.

 

[MickyG1982]

I went from using a 8x to a 16x socket for my video card and got a MASSIVE fps boost. So are all our problems PCIe related?? Try turning your PCIe port to 8x and see if you get a performance hit. I think Odysseys wants MORE than 16x lanes to a video card but nobody has a motherboard and card that can handle that so everyone is having the SAME problem..And high end computers running high speed IO off the PCIe ports will have even more problems. I think this is why lower end computers have similar performance at times.

There are many factors.

There was also supposed to be more than that...

Extra PCI-e lanes simply means that a graphics card (and anything plugged into those lanes) has extra bandwidth to play with. So, in general, more lanes = good, to a point. That point is just how many powerful your GPU is and just how much your CPU can feed it. If either of those is already a limiting factor then increasing the number of PCI-e lanes won't make much of a difference.

 

[Morbad]

I went from using a 8x to a 16x socket for my video card and got a MASSIVE fps boost.

Probably coincidental, unless you're running into a serious VRAM limitation.

So are all our problems PCIe related??

Highly unlikely.

PCI-E bandwidth shouldn't matter one whit, except in VRAM capacity constrained scenarios where not all required assets can fit and have to be streamed in, via PCI-E.