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.