WYP
News Guru
Tom's Hardware this week have managed to get a few details from the upcoming PCI-E 4.0 standard.
According to their data PCI-E 4.0 will have a base speed of 16Gbps per data link, which is double that of the 8Gbps capacity of today's PCI-E 3.0 standard.
At present the standard has not been drafted, so do not expect PCI-E 4.0 in any motherboards or devices anytime soon.
For those who wonder, Why do we need PCI-E to be faster? or How does this Benifit us? Well the answer is simple; size, cost and obviously speed.
Fewer data links for the same data rate will reduce the size of a connection required for the required performance, which is great for mobile and can also reduce the cost of devices by decreasing the required data links.
Speed will also be a great benefit, while most devices will not bottleneck on PCI-E 2.0, never-mind 3.0, more and more devices are being ran through PCI-E (PCI based SSDs and PCI based Raidcards being a prime example) and as such the stresses on our PCI lanes will continue to rise, so a speed boost will eventually be required.
No matter how we look at it PCI-E 4.0 will be a welcome boost, regardless of whether we need it at the minute. Hopefully we will here more regarding the next generation of the PCI-E spec as the spec is developed and finalized.
Source - tomshardware
According to their data PCI-E 4.0 will have a base speed of 16Gbps per data link, which is double that of the 8Gbps capacity of today's PCI-E 3.0 standard.

At present the standard has not been drafted, so do not expect PCI-E 4.0 in any motherboards or devices anytime soon.
For those who wonder, Why do we need PCI-E to be faster? or How does this Benifit us? Well the answer is simple; size, cost and obviously speed.
Fewer data links for the same data rate will reduce the size of a connection required for the required performance, which is great for mobile and can also reduce the cost of devices by decreasing the required data links.

Speed will also be a great benefit, while most devices will not bottleneck on PCI-E 2.0, never-mind 3.0, more and more devices are being ran through PCI-E (PCI based SSDs and PCI based Raidcards being a prime example) and as such the stresses on our PCI lanes will continue to rise, so a speed boost will eventually be required.
No matter how we look at it PCI-E 4.0 will be a welcome boost, regardless of whether we need it at the minute. Hopefully we will here more regarding the next generation of the PCI-E spec as the spec is developed and finalized.
Source - tomshardware