Yonah (microprocessor) - Brand Names

Brand Names

The Intel Core Duo brand refers to a low-power (less than 25 watts) dual-core microprocessor, which offered lower power operation than the competing AMD Opteron 260 and 860 HE at 55 watts. Core Duo was released on 5 January 2006, with the other components of the Napa platform. It was the first Intel processor to be used in Apple Macintosh products (although the Apple Developer Transition Kit machines, non-production units distributed to some developers, used Pentium 4 processors).

Contrary to early reports, the Intel Core Duo supports Intel VT-x x86 virtualization, except in the T2300E model and proprietary T2050/T2150/T2250 mounted by OEMs (cf. the Intel Centrino Duo Mobile Technology Performance Brief and Intel's Processor Number Feature Table). The Intel Pentium Dual Core processors do not have this feature. However some vendors (including HP) chose to disable this feature, with others making it available through a BIOS option.

There were two variants and one derivative of the Yonah, which did not bear the "Intel Core" brand name. A dual-core (server) derivative, code-named Sossaman, was released on 14 March 2006 as the Xeon (branded) LV (low-voltage). The Sossaman differed from the Yonah only in its support for dual-socket configurations (two CPUs - i.e. four cores - on board, like AMD Quad FX), and implementation of 36-bit memory addressing (PAE mode). A single-core variant, code-named Yonah-1024, was released as the Celeron (branded) M 400 series CPUs. It was largely identical to the Core Solo branded Yonah, except that it only had half the L2 cache and did not support SpeedStep and Intel VT-x. Another dual-core variant of the Core Duo branded Yonah was released as the Intel Pentium Dual-Core branded T2060, T2080, and T2130 mobile CPUs with Intel VT-x support.

Intel 64 (Intel's x86-64 implementation) is not supported by Yonah. However, Intel 64 support is integrated in Yonah's successor, the mobile version of Core 2, code-named Merom.