Multi-core means any number of cores greater than one.

Dual-core is a multi-core with exactly two cores.

"Dual core" implies that there are two separate instruction execution units placed on a single "die." Some use shared components, such as cache, while others have two full processors, including all sub-components. All dual core processors could be considered multi-core (which simply means multiple "cores" or "processors"). However, a tri-core or quad-core is also a multi-core. Therefore, all dual cores are multi-cores, but not all multi-cores are dual cores.

2005

Of course it will run. But it will not be making full utilization of the multi-core architecture. In that aspect, single-core processors with more processing power are sometimes better suited to run single threaded application than multi-core processors with less processing power.