Editing Bus (computing) (section)

===Third generation===
{{See also|Bus network}}

Third-generation buses have been emerging into the market since about 2001, including [[HyperTransport]] and [[InfiniBand]]. They also tend to be very flexible in terms of their physical connections, allowing them to be used both as internal buses, as well as connecting different machines together. This can lead to complex problems when trying to service different requests, so much of the work on these systems concerns software design, as opposed to the hardware itself. In general, these third-generation buses tend to look more like a [[Computer network|network]] than the original concept of a bus, with a higher protocol overhead needed than early systems, while also allowing multiple devices to use the bus at once.

Buses such as [[Wishbone (computer bus)|Wishbone]] have been developed by the [[open source hardware]] movement in an attempt to further remove legal and patent constraints from computer design.

The [[Compute Express Link]] (CXL) is an [[open standard]] [[interconnect]] for high-speed [[CPU]]-to-device and CPU-to-memory, designed to accelerate next-generation [[data center]] performance.<ref>{{Cite web|url=https://www.computeexpresslink.org/about-cxl|title=ABOUT CXL|website=Compute Express Link|language=en|access-date=2019-08-09}}</ref>