This is slightly inaccurate. Adiabatic quantum computing is not the term you want. Adiabatic quantum computing is equivalent to the more traditional quantum-gat

This is slightly inaccurate. Adiabatic quantum computing is not the term you want. Adiabatic quantum computing is equivalent to the more traditional quantum-gates based computing model (both of them are efficient at the same class of problems). D-Wave can solve one particular problem (that can also be solved by classical computers in similar time), the problem is related to annealing, and is not the problem of adiabatic quantum computing (which is much more general). The component they lack is that they can not preserve any non-trivial information between their qubits.