Core i5-8259U is a mobile processor from Intel released on 5 April 2018, and it is in active production status now. It belongs to Core i5 family and has a Coffee Lake-U architecture. This processor is built on Intel BGA 1356, and uses unknown PCI express connection. 14 nm process is used in production.
Processor has 4 cores and 8 threads, with the base frequency of 2.3 GHz. It has DDR4 memory support. As for the cache, it supports L1 64K (per core), L2 256K (per core) and L3 6MB (shared).