Complex sentence: Instead, the Win came with an Intel Atom x7-Z8700, which is a 64-bit quad-core CPU with a base clock speed around 1.44 GHz, with a turbo boost up to 2.56 GHz.
Split into simpler sentences: Instead, the Win came with an Intel Atom x7-Z8700. These are 64-bit quad-core CPUs with a base clock speed around 1.44 GHz, with a turbo boost up to 2.56 GHz.