Tukwila uses a 65 nm process, has between two and four cores, up to 24 MB CPU cache, Hyper-Threading technology and new memory controllers. It also has double-device data correction, which helps to fix memory issues. Tukwila also has Intel QuickPath Interconnect (QPI) to replace the Itanium bus architecture. It has a maximum inner-processor bandwidth of 96 GB/s and a maximum memory bandwidth of 34 GB/s. With QuickPath, the processor has built-in memory controllers, which controls the memory using QPI interfaces to communicate with other processors and I/O hubs. QuickPath is also used with Intel processors using the "Nehalem" architecture, so that Tukwila and Nehalem might be able to use the same chipsets.