Final answer:
The Northbridge chipset is mostly obsolete now that the CPU has taken on the role of memory controller.
Step-by-step explanation:
The chipset that is mostly obsolete now that the CPU has taken on the role of memory controller is the Northbridge chipset.
Previously, the Northbridge chipset was responsible for communication between the CPU and memory, managing data transfer rates and providing control over memory operations. However, with advancements in CPU technology, modern CPUs now have an integrated memory controller. This means that the CPU can directly communicate with the memory without the need for a separate chipset.
As a result, the Northbridge chipset has become less relevant and many modern motherboards no longer include it.