The first commercially produced D-Wave processor was a programmable,[25] superconducting integrated circuit with up to 128 pair-wise coupled[26] superconducting flux qubits.[27][28][29] The 128-qubit processor was superseded by a 512-qubit processor in 2013.[30] The processor is designed to implement a special-purpose quantum annealing[11][12][13][14] as opposed to being operated as a universal gate-model quantum computer.