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The GTX 660 Ti's power consumption was a little surprising as Gigabyte's card chugged roughly the same amount of juice as the GTX 670. That said, given that the only major change is in the memory sub-system, it makes sense. The GTX 660 Ti also consumed 11% more power than the HD 7870, but that's definitely justifiable when you measure the additional performance offered by Nvidia's solution.
Armed with Gigabyte's WindForce 2X technology, the GTX 660 Ti reached a maximum of 77 degrees under load, which is a little hotter than the HIS IceQ Radeon HD 7870, but still very manageable.
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