Core i3-4158U is a mobile processor from Intel released on 4 June 2013, and it is in cpu.details.production-unknown now. It belongs to Core i3 family and has a Haswell architecture. This processor is built on Intel BGA 1168, and uses unknown PCI express connection. 22 nm process is used in production.
Processor has 2 cores and 4 threads, with the base frequency of 2000 MHz. It has DDR3 memory support. As for the cache, it supports L1 64K (per core), L2 256K (per core) and L3 3MB (shared).