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Various apparatus and methods using phase change materials are disclosed. In one aspect, a method of operating a computing device that has a first semiconductor chip with a first phase change material and a second semiconductor chip with a second phase change material is provided. The method include

Various apparatus and methods using phase change materials are disclosed. In one aspect, a method of operating a computing device that has a first semiconductor chip with a first phase change material and a second semiconductor chip with a second phase change material is provided. The method includes determining if the first semiconductor chip phase change material has available thermal capacity. If the first semiconductor chip phase change material has available thermal capacity then the first semiconductor chip is instructed to operate in sprint mode. The first semiconductor chip is instructed to perform a first computing task while in sprint mode.

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1. A method of operating a computing device having first semiconductor chip including a first phase change material and a second semiconductor chip including a second phase change material, comprising: determining if the first semiconductor chip phase change material has available thermal capacity;i

1. A method of operating a computing device having first semiconductor chip including a first phase change material and a second semiconductor chip including a second phase change material, comprising: determining if the first semiconductor chip phase change material has available thermal capacity;if the first semiconductor chip phase change material has available thermal capacity then instructing the first semiconductor chip to operate in sprint mode;determining if the second semiconductor chip phase change material has available thermal capacity, and if so, then instructing the second semiconductor chip to operate in sprint mode; andranking the first semiconductor chip and the second semiconductor chip based upon highest available thermal capacity and performing a computing task with the highest ranked of the first and second semiconductor chips. 2. The method of claim 1, performing another computing task with the lower ranked of the first and the second semiconductor chips. 3. The method of claim 1, comprising ranking the computing task and another computing task to be performed according to importance and instructing the highest ranked of the first and second semiconductor chips to perform the highest ranked computing task. 4. The method of claim 1, comprising determining if the first semiconductor chip phase change material is approaching a thermal limit, and if so, then migrating the computing task to the second semiconductor chip. 5. The method of claim 1, wherein the first and second semiconductor chips comprise memory devices, the method comprising using a processor to instruct the first semiconductor chip. 6. A method of thermally managing a computing device having first semiconductor chip including a first phase change material and a second semiconductor chip including a second phase change material, comprising: determining if the first semiconductor chip phase change material has available thermal capacity and if the second semiconductor chip material has available thermal capacity; andranking the first semiconductor chip and the second semiconductor chip based upon highest available thermal capacity and performing a computing task with the highest ranked of the first and second semiconductor chips. 7. The method of claim 6, comprising ranking the first computing task and a second computing task to be performed according to importance and instructing the highest ranked of the first and second semiconductor chips to perform the highest ranked computing task. 8. The method of claim 6, comprising determining if the first semiconductor chip phase change material is approaching a thermal limit, and if so, then migrating the computing task to the second semiconductor chip. 9. The method of claim 6, wherein the first and second semiconductor chips comprise memory devices, the method comprising using a processor to instruct the first semiconductor chip and the second semiconductor chip. 10. A computing device, comprising: first semiconductor chip including a first phase change material and a second semiconductor chip including a second phase change material; anda third semiconductor chip programmed to determine if the first semiconductor chip phase change material has available thermal capacity and the second semiconductor chip phase change material has available thermal capacity and to instruct the first semiconductor chip or the second semiconductor chip having available thermal capacity to perform a first computing task; andwherein the third semiconductor chip is programmed to rank the first semiconductor chip and the second semiconductor chip based upon highest available thermal capacity and performing the first computing task with the highest ranked of the first and second semiconductor chips. 11. The computing device of claim 10, wherein the third semiconductor chip is programmed to instruct the first semiconductor chip or the second semiconductor chip having available thermal capacity to operate in sprint mode. 12. The computing device of claim 10, wherein the third semiconductor chip is programmed to migrate the first computing task to one of the first semiconductor chip and the second semiconductor chips that is further away from a thermal capacity limit. 13. The computing device of claim 10, wherein the third semiconductor chip is programmed to rank the first computing task and a second computing task to be performed according to importance and instructing the highest ranked of the first and second semiconductor chips to perform the highest ranked computing task. 14. The computing device of claim 10, wherein the first and second semiconductor chips comprise memory devices and the third semiconductor chip comprises a processor. 15. The computing device of claim 10, comprising a cooling fan with an air outlet, and wherein the first phase change material having a first maximum thermal capacity and the second phase change material having a second maximum thermal capacity. 16. The computing device of claim 15, wherein the first semiconductor chip or the second semiconductor chip with the lesser maximum phase change material thermal capacity is positioned closer to air outlet than the first semiconductor chip or the second semiconductor chip with the greater maximum phase change material thermal capacity.