Recently I had an oportunity to test OpenSolaris OS on two dual core notebooks. Namely Sony Vaio VGN-SZ1XP/C and Toshiba Tecra model M5. Both are equipped with Intel® Core™ Duo CPU. The dual core CPU works fine and appears in the OS as there are two independent CPUs. The installation of OpenSolaris OS on both machines was fluent, one limitation for somebody could be, that network card drivers are currently not supported in the installer, so potential network installation will be tricky. Also don't expect that everything e.g. like fingerprint reader or bluetooth will work now. However, the overall impression from both notebooks is good and all core peripherials are working in OpenSolaris.

Here is the summary of things, which were tested:

Notebook	Sony Vaio VGN-SZ1XP/C	Toshiba Tecra M5
CPU	2 virtual cpus detected in the OS	2 virtual cpus detected in the OS
Graphics card 2D	OK with Xorg, see note below	OK with Xorg and driver from NVidia
External monitor	OK using TwinView	OK using TwinView
Network card	OK using driver from http://www.marvell.com/	OK using internal latest e1000g driver
Touchpad	OK	OK
DVD burning	OK	OK
USB stick	OK	OK

Note: There are two graphics card in the Vaio notebook: NVidia GeForce GO 7400 and Intel 945GM. The user can switch between them by a physical switch located above the keyboard labeled "stamina/speed" (reboot is needed after the change). NVidia card works with the binary driver from http://www.nvidia.com/ and Intel will be hopefully supported soon by internal Xorg's 810 driver, now one can use VESA driver, which works fine in 2D.