Will PCI-E 4.0 make a performance increase?

[Heewon]

Hi,

 

Just a question for everyone here. With the current graphics cards/sound cards out today, do you think that PCI-E 4.0 will create a significant performance difference ( > 1%) than PCI-E 3.0? I really could not see it unless you are doing a SLI/CF configuration and running things that x8 speeds. I just wanted to know if anyone knows a little more about this and can confirm whether PCI-E 4.0 would give an edge.

 

Just trying to explore the things in the future. Looks like they're roughly doubling the maximum potential transfer speeds again, but that doesn't necessarily translate to 2X faster in real applications if all the technology adapts to it. 

 

Cheers,

[TheRandomness]

Yes and no. Modern graphics cards still don't use the full bandwidth of a PCIe 2.0 x16 slot, doubling the bandwidth of a 3.0 x16 slot won't really do anything.

PCIe SSDs, however, would probably be able to make use of the new standard to it's full potential.

[Tom Hanks]

PCI-E 4.0 is a VERY long way away. Some time after 2017.

 

http://www.prnewswire.com/news-releases/teledyne-lecroy-announces-protocol-exerciser-for-pci-express-40-technology-300151323.html

[Enderman]

Pcie2.0 already isn't a bottleneck, so no.

3.0 would just make it so you can use even more devices.

[GangstaRas]

maybe if SLI/crossfire was still a thing, the upgrades in PCIe lanes had plenty benefit when it came to that but as these configurations seem to be phasing out slowly but surely, I'd say no for all single GPU setups thus far

[BrightCandle]

Its different for every piece of software. A large chunk of compute workloads do saturate the bus often so they can certainly use more bandwidth. A few games are also limited by PCI-E 2.0 with top cards so its going to happen that 3.0 will be saturated by some games occasionally or will be once cards get faster. Tech gets faster and every part needs to keep improving to make sure its balanced.