Yonah was the code name for (the core of)
Intel's first generation of
65 nm process
mobile microprocessors, based on the Banias/Dothan-core
Pentium M microarchitecture.
SIMD performance has been improved through the addition of
SSE3 instructions and improvements to
SSE and
SSE2 implementations, while integer performance decreased slightly due to higher latency cache. Additionally, Yonah includes support for the
NX bit.