Yonah (microprocessor)

This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details. (September 2010) (Learn how and when to remove this message)

Yonah

Core Duo U2500 in BGA packaging
General information
Launched	2006
Discontinued	2008
Marketed by	Intel
Designed by	Intel
Common manufacturer	Intel
CPUID code	06Ex
Product code	80538 (single-core) 80539 (dual-core)
Performance
Max. CPU clock rate	1.06 GHz to 2.33 GHz
FSB speeds	533 MT/s to 667 MT/s
Cache
L1 cache	32 KB instruction, 32 KB data per core
L2 cache	2 MB, shared
Architecture and classification
Application	Mobile
Technology node	65 nm
Microarchitecture	P6
Instruction set	x86-16, IA-32
Extensions	MMX, SSE, SSE2, SSE3, EIST, XD bit
Physical specifications
Cores	1–2
Packages	FC-BGA 479
Socket	Socket M
Products, models, variants
Brand names	Mobile Celeron 4xx Mobile Pentium Dual-Core T2xxx Core Duo T2xxx Core Duo L2xxx Core Duo U2xxx Core Solo T1xxx Core Solo U1xxx Mobile Xeon LV/ULV
History
Predecessor	Dothan
Successor	Merom
Support status
Unsupported

Yonah is the code name of Intel's first generation 65 nm process CPU cores, based on cores of the earlier Banias (130 nm) / Dothan (90 nm) Pentium M microarchitecture. Yonah CPU cores were used within Intel's Core Solo and Core Duo mobile microprocessor products. SIMD performance on Yonah improved through the addition of SSE3 instructions and improvements to SSE and SSE2 implementations; integer performance decreased slightly due to higher latency cache. Additionally, Yonah included support for the NX bit.