It looks like it might have quad support, if it has the G965 chipset:
Intel® Desktop Board DG965RY
That is if I found the correct MB t_fields04 has.
Edit:
The Boxed Intel® Core 2 Quad Processor
Look for: Platform Component Selection
Motherboard Selection
Motherboards used with the Intel® Core 2 Quad processor or the Intel® Core 2 Extreme processor must specifically support the Intel Core micro-architecture. In general, look for a motherboard which uses one of the following chipsets:
* Intel® Q965/G965 Express Chipset
* Intel® 975X Express Chipset (required for support of Intel® Core 2 Extreme processor only)
* Intel® 946GZ Express Chipset
It is important to verify that the specific motherboard model and revision support the specific Intel Core 2 Quad Processor number being used. Motherboards may also require a BIOS update in order to support specific processors. Intel provides a Tested Motherboard List and The Source Motherboard List for your convenience in choosing a suitable motherboard.