I have a Tablo OTA tuner that got very hot. This thing has made a huge difference and now it barely feels warm. The hit receiver is big enough for the Tablo and the portable hard drive it uses to record my TV shows. I have to say I also ordered an Infinity AC fan as extra insurance, mainly for the HDD as it is not flat and does not make good contact with the heatsink to dissipate heat. I highly recommend this radiator but remember that no matter what you use it for it needs to be flat.